Austin
Climate Data
Natalie Ward
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csd
Center for Sustainable Development
UTSoA - Meadows Fellowship Seminar
Austin Climate Data
Natalie Ward
Fig. 01 Austin location within Texas
Basic Information
Climate Region
Latitude: +30.26694
(30°16’00.984”N)
Austin is located in central Texas, on
the border between a sub-tropical
humid climate and a sub-tropical
subhumid climate, as seen in Figure
02. Both climates are noted to have
warm summers, while the
sub-tropical subhumid climate also
is noted to have dry winters. Within
Texas, the variety of climate types
is due to mountain ranges to the
west, proximity to the Gulf of Mexico
and the southern Great Plains, low
latitudes, and shifts of elevation from
high plains and mountains to the
coastal plains. Due to the
proximity to the Gulf of Mexico and
terrain, Texas is inflicted with a lot of
severe weather including hurricanes
and cyclones. The shift of climate
regions is apparent not only in the
climate types, but also is evident in
the correlating patterns reflected in
related maps such as the
precipitation map of Texas.1
Longitude: -97.74278
(97°44’34.008”W)
Time zone: UTC-6 hours
Country: Texas, United States
Continent: Americas
Sub-region: Northern America
Altitude: ~170 m (560 ft)
1
UTSoA - Meadows Fellowship Seminar
Precipitation
Due to Austin’s climate region, it
reflects a moderate level of
precipitation annually. As illustrated
in Figure 3, the average annual
precipitation values for Austin range
from 32 to 36 inches per year. This
is much lower to other cities such as
New Orleans which get an average
of 61.9 inches per year.2 In Figure
4, average monthly precipitation is
charted, reflecting that there are
two peaks that occur in April and
September. These two months not
only contain the
highest average monthly
precipitation levels, but also contain
the highest daily record levels with
values of 10 and 15 inches
respectively. Although the
average monthly and daily record
charts are not identical curves, there
is a strong correlation between
months of high precipitation and
steeper daily amounts of
precipitation, as seen in the two
charts of Figure 4.
Fig. 02 Regions of climate classification in Texas
Temperature
As a whole, Texas is known for warm
weather. However, many parts of
the state have more moderate
winters that are dry rather than
humid. Since Austin lies on the
border between two climate zones,
it has portions of the year which are
extremely humid and others that are
less humid. The average monthly
temperatures seen in Figure 4 show
a range of only 40 degrees between
the lowest and highest months.
However, the records high and low
temperatures reflect extremes as
low as -2°F in January and as high
as 112°F in September. In addition
to the extreme temperatures, one
needs to factor in the humidity, which
if high can begin to sway the human
2
0-10
10-12
12-14
14-16
16-18
18-20
20-22
22-24
24-26
26-28
28-30
30-32
32-34
34-36
36-38
38-40
40-42
42-44
44-46
46-48
48-50
50-52
52-54
54-56
56-58
58-60
Fig. 03 Annual precipitation (inches) in Texas from 1951 to 1980
Austin Climate Data
Average Monthly Temperatures (°F) and Precipitation (in)
January
February
March
April
May
June
July
August
September
October
November
December
Average High
59.6
62.3
68.4
75.9
80.6
87.4
89.5
89.1
84.4
77.0
68.2
65.5
Average Low
36.6
42.3
51.4
59.2
66.9
71.4
78.6
77.9
70.3
60.3
46.0
40.9
Average Precipitation
9.21
9.41
7.54
19.82
14.10
14.96
12.80
10.88
20.78
12.63
14.10
16.14
Average Monthly Temperatures
Average Monthly Precipitation
100.0
25.00
90.0
80.0
20.00
60.0
50.0
High
40.0
Low
30.0
Precipitation (in)
Temperature (F)
70.0
15.00
10.00
Precipitation
5.00
20.0
10.0
December
October
November
September
July
August
June
May
April
March
January
December
November
October
September
August
July
June
May
April
March
February
January
February
0.00
0.0
Record Daily Temperatures and Precipitation
Record High
Year
Record Low
Year
Record Precipitation
Year
January
February
March
April
May
June
July
August
September
October
November
December
90
1971
-2
1949
4.41
1991
99
1996
-1
1899
3.05
1958
98
1971
18
1948
3.26
2006
99
2006
30
1926
10.00
1915
104
1925
40
1925
6.16
1929
108
1998
51
1926
5.81
1941
109
1954
57
1924
8.56
1919
110
2003
58
1915
5.68
1994
112
2000
41
1942
15.00
1921
100
1938
30
1993
7.39
1923
91
2006
20
1976
7.55
2001
90
1955
4
1989
6.34
1913
Record Daily Temperatures
Record Daily Precipitation
120
16.00
100
14.00
12.00
60
40
High
Low
20
Precipitation (in)
10.00
8.00
Precipitation
6.00
December
October
November
September
August
July
June
May
April
March
December
November
October
September
August
July
June
May
April
0.00
March
-20
February
2.00
January
0
February
4.00
January
Temperature (F)
80
Fig. 04 Average temperature and precipitation for Austin, TX. (Data taken at Camp Mabry, see Appendix A)
3
UTSoA - Meadows Fellowship Seminar
perception of temperatures to higher
extremes in the summer and cooler
extremes in the winter.
Solar
Located at 30°N latitude, Austin
resides in a part of the country that
receives a large amount of sunlight.
As seen in Figure 5, on average
Austin maintains 15 hours of
daytime in the summer and 11 hours
of daytime in the winter. Since
Austin lacks heavy cloud cover, there
is a range of 50-75% of available
sunlight throughout the year. This
range is extremely important when
considering methods such as solar
energy, since the solar benefit has a
lot of potential. Likewise, the large
quantity of sun affects building
designs due to possibilities of
extreme solar heat gain and glare
issues from large amounts of
sunlight. All of these issues can be
incorporated into building design to
allow for optimization of the solar
impact in Austin.
Fig. 05 Sun rise and sun set times
Fig. 06 Austin wind roses annually from 1984 to 1992
Wind
Within Austin, there is wind that is
dominant on the North and South
Axis, with some variety to the East.
Overall, Austin mainly contains wind
under 21 knots (35.4 f/s), with the
majority of the winds ranging from 7
to 10 knots (11.8 f/s - 16.8 f/s). As a
comparison, Chicago has an overall
average of 9.25 knots (15.6 f/s)
annually while Austin averages at
7.7 knots (13 f/s).3 In addition to the
varying average wind speeds,
Chicago allows for greater wind
speeds than Austin while also
creating larger percentages of time
at these higher wind speeds. In
addition to these factors, it also has a
larger variety of wind directions than
Fig. 06 Sun path diagram
4
Austin, possibly due to the proximity
to Lake Michigan and the varied built
environment and terrain.
Percentage of Possible Sunshine
100
Percetantage of Available Hours
90
80
Austin Zero Energy Homes
70
60
50
40
30
20
10
October
August
June
July
August
September
October
November
December
56
69
75
74
66
64
54
59
December
May
54
November
April
55
September
March
51
Fig. 07 Possible sunshine hours
July
February
49
April
January
March
February
June
May
0
January
ge of Available Hours
Austin Climate Data
In 2006, a bill was passed in
Austin to propose Zero Energy
Capable Homes Initiative. This
type of home is defined as one
that is “energy-efficient enough to
be net zero energy homes with the
addition of on-site or its equivalent,
energy generation.”5 Within the
bill, it devises a slow shift in codes
throughout the years leading up
to 2015 that will result in all new
single-family home designs to be
zero energy by 2015. This will result
in increased energy efficiencies
from today’s standards and allow
for large reductions in energy bills
for residents. With an assumption
of 6,400 homes being built in Austin
in the next year, there would be
a carbon reduction from these
homes amounting to 178,477 acres
of forest or removing 22,814 cars
from the road.4 In Figure 10, the
chart defines various factors which
are incorporated into the design of
the zero energy homes, including
temperature values and specific
U-values and R-Factors to be used
as minimum values for specific
elements in the design process.
Fig. 08 Austin annual wind roses
5
UTSoA - Meadows Fellowship Seminar
Variable
2
Insolation, kWh/m /day
Clearness, 0-1
Temperature,CALDWELL
°F
CALHOUN
Wind speed, mph
Precipitation,CAMERON
in
Wet days, d CHAMBERS
CHEROKEE
Relative humidity, %
COLORADO
J
2.73
0.47
48.00
11.36
1.72
7.30
70.50
Fig. 09 Solar energyCOMAL
and surface meteorology
CORYELL
F
M
3.28
4.22
0.46
0.48
2.252.30
HARRIS
58.64
2.111.79
HAYS12.17
2.1 2.42HIDALGO
1.87
2.2
6.80HILL 7.30
2.2
HOUSTON
69.50 69.00
2.2
2.2
2.2
JACKSON
JASPER
JEFFERSON
A
5.30
0.52
66.61
11.12
2.74
6.90
71.00
M
J
J
5.61
6.26
6.55
0.51
0.55
0.59
2.2
73.08 MAVERICK
77.77 80.15
2.2
10.04 MCLENNAN
9.48
8.99
2.1
4.50 MCMULLEN
3.52
1.67
2.2
9.20 MEDINA
6.80
4.90
2.2
MILAM
76.00 74.50 71.50
2.1
2.2
2.2
MONTGOMERY
NEWTON
NUECES
A
5.92
0.57
2.1
80.60
2.2
8.41
2.1
2.04
2.2
5.20
2.2
70.00
2.2
2.2
2.1
S
O
5.04
4.04
0.54
0.53
WALLER
75.88 69.01
WASHINGTON
9.24
9.95
WEBB
3.53
3.44
WHARTON
7.70
6.70
WILLACY
72.00 71.00
WILLIAMSON
WILSON
ZAPATA
N
2.98
0.48
2.2
57.99
2.2
11.12
2.1
2.24
2.1
7.20
2.1
72.00
2.2
2.2
2.1
D
2.50
0.46
49.50
10.56
2.10
7.30
71.00
302.2 Exterior Design Conditions. The design parameters in Table 302.2 shall be used for calculations
under this code.
CLIMATE
SUB
CLIMATE
ZONE
MAXIMUM
WINDOW
TO WALL
AREA
RATIO
CLIMATE
2.1
SUB
CLIMATE
ZONE
MAXIMUM
20
WINDOW
TO 25
WALL
AREA
30
RATIO
15
TABLE 302.2
CONDITION
VALUE
28
Wintera, Design Dry-bulb (oF)
99
Summera, Design Dry-bulb (oF)
74
Summera, Design Wet-bulb (oF)
1735
Degree days heatingb
2862
Degree days coolingb
2.2
Climate Zonec
For SI: deg C=[(deg F)-32]/1.8. TABLE 402.1.1
INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENTa
a
The outdoor design temperature shall be selected from the columns of 0.4 percent values for
WOOD
winter and 0.4 percent
for summer from tables
in the Handbook of BASEMENT
Fundamentals
SLABpublished
SKYLIGHT values
GLAZED
FRAME
CRAWL SPACE
FLOOR
WALL
R-VALUE
FENESTRATION
UFENESTRATION
CEILING
WALL
WALL
by
ASHRAE.
Adjustments
shall
be
permitted
to
reflect
local
climates,
which
differ
from
the
TABLE
402.1.1
b
d
c
R-VALUE
R-VALUE
& DEPTH
U-FACTOR
FACTOR
SHGC
R-VALUE
R-VALUE
R-VALUE
a
tabulated
or local
weather experience
determined
by
theCOMPONENT
building
INSULATION
AND
REQUIREMENTS
BY
0.80 temperatures,
0.80 FENESTRATION
0.35
19
11
11
0 official. 0
5
b
The0.75
degree-days
heating (base
(base
0.75
0.3565OF) and30coolingWOOD
13 65°F) shall
11 be selected
0 from the
0 Energy 5
Conservation
Design
Standards
for New State
Buildings,
State Energy
Conservation
Office,
State
SKYLIGHT
BASEMENT
SLAB0
GLAZED
FRAME
CRAWL5 SPACE
0
0.65
0.65
0.35
30
13
11
UFLOOR
WALL
R-VALUE
FENESTRATION
CEILING
WALL
WALL
ofFENESTRATION
Texas
(effective
June
1,
1989,
as
revised
May
10,
1990
and
February
1,
1993).
b
d
c
0.51
0.51
0.35
38
13
11
0
0
5
U-FACTOR
FACTOR
R-VALUE
R-VALUE
&
DEPTH
SHGC
R-VALUE
R-VALUE
R-VALUE
c
The0.65
climate
zone
shall
be
selected
from
Figure
302.1
of
this
Code.
0.80
0.80
0.35
19
11
0.65
0.40
30
13
11
50
0
65
15
0.75
0.75
20
0.55
0.55
2.1
2.2
0.65
0.65
25
0.51
0.51
MAX
0.51
0.51
30 GLAZED 0.46
CLIMATE MAX0.46
SUB
GLAZED
15 AREA TO 0.65
0.65
CLIMATE
FENESTRATION
WALL AREA
20 RATIO
0.55 U-FACTOR
0.55
ZONE
2.2
3.1
25 15
0.51
0.51
0.80
30 MAX
0.46
0.46
20
0.75
CLIMATE
MAX0.60
2.1 - 15 GLAZED 0.60
0.65
0.65
SUB
GLAZED
AREA
25 TO 0.51
0.650.51
0.55FENESTRATION
0.55
20
CLIMATE
WALL
AREA
3.1
3.2
30
0.510.45
ZONE
0.51 U-FACTOR
0.51
25 RATIO
0.45
0.65
30 15
0.46
0.46
0.800.40
0.40
0.60
0.60
15 20
0.51
0.55
0.750.51
2.2
2.1
0.51
20 25
0.45
0.45
0.51 0.51
0.65
3.2
3.3
0.45
0.45
25
0.40
0.40
30
0.46
0.51
30
0.40
0.40
15
0.650.45
0.51
0.51
15 guidelines 0.45
Fig. 10 Zero Energy design
20
0.550.37
0.45
0.45
20
0.37
3.1
2.2
3.3
3.4
0.510.37
0.40
0.40
25 25
0.37
0.40
0.40
30
0.37
0.37
30
0.46
6
15 15
0.45
0.45
0.60
0.65
20
0.37
0.37
3.4
4
0.51
20
0.55
3.2
3.1
25
0.37
0.37
TABLE 402.1.3
a
0.35
30
0.40
38
13
EQUIVALENT
U-FACTORS
30
0.35
38
13
13
0.35
38
16
MAX
MAX
0.40
30GLAZED 13 MIN
FENESTRATION
CEILING
SKYLIGHT
402.1.3 13 R-VALUE
b
0.40TABLE
38
SHGC
U-FACTOR
a
0.35
38
13 0.086
EQUIVALENT
U-FACTORS
0.75
0.055
0.35
38
16
0.75
0.035
0.082
0.40
30
13
MAX
GLAZED
MIN
MAX
0.75
0.035
0.082
0.40
38
13 CEILING
FENESTRATION
SKYLIGHT
b
0.75
0.030
0.082
SHGC
U-FACTOR
0.35
13 R-VALUE
0.40
38
16
0.75
0.035
0.082
0.35
38
16
0.055
0.086
0.40
30
13 0.082
0.75
0.030
0.035
0.40
38
13 0.082
0.030
0.75
0.035
0.40
38
16
0.030
0.071
0.75
0.082
0.35
16
0.40
38
19
0.65
0.75
0.035
0.082
0.40
30
NR
38
13
0.55
0.030
0.75
0.40
NR
38
13 0.082
0.51
0.40
16 0.082
0.75
0.030
NR
38
19
0.40
NR
38
19 0.071
0.46
0.75
0.030
38
13 0.082
NR
0.035
0.65
NR
38
13
0.65
0.030
0.082
0.55
NR
38
19
11
60
11
19
80
11 MIN WOOD
19
80
FRAME
11
19
WALL 5
11 R-VALUE6d
19
19
0.069 8
19
8
0.069
MIN
WOOD
5
19
FRAME6
0.069
WALL 6
19
0.069 68d
19 R-VALUE
0.069 68
19
19
0.069 76
19
0.047
0.069 76
76
19
0.047
0.069
19
76
0.069 87
19
0.069 87
19
0.047 87
19
19
7
30
0.04713
19
8
0.047
0.069
19
8
0.047
0.069
19
8
0
0
0
MIN0
FLOOR
0
R-VALUE
0
0.360
0
0.360
0
MIN
0.360
0
FLOOR
0.360
R-VALUE
0
0.122
0
0.360
0
0.096
0.360
0
0.087
0.360
0
0.087
0.360
0
0.122
5, 02 ft
0.096
6, 02 ft
0.087
6, 02 ft
6, 02 ft
0.087
5,
2 ft
0.096
0.122
6, 2 ft
0.096
6, 2 ft
65
5
10
5
10
MIN
BASEMENT
6
WALL
6
R-VALUE
10
0.135
10
0.135
MIN
76
BASEMENT
0.135
76
WALL
0.135
R-VALUE
10
7
0.106
10
0.135
7
87
0.106
0.135
87
0.075
0.135
87
0.075
0.135
87
0.106
8
11
0.106
8
13
8
0.075
13
8
20
0.075
11
0.101
0.106
13
0.101
0.106
13
Austin Climate Data
Glossary
Subtropical Humid Climate: Characterized
by hot, humid summers and cool winters.
Subtropical Subhumid Climate:
Characterized by hot, humid summers and
cool, dry winters.
Precipitation: Any or all of the forms of water
droplets, whether liquid or solid, that fall from
the atmosphere and reach the ground.
Temperature: Register of the amount of
heat contained by the air at surface and
is measured in degrees on the Fahrenheit
temperature scale by alcohol or mercury
thermometers.
Figure 05:
http://www.gaisma.com/en/location/austintexas.html
Figure 06:
http://www.gaisma.com/en/location/austintexas.html
Figure 07:
http://www.rssweather.com/climate/Texas/
Austin%20City/
Figure 08:
http://www.tceq.state.tx.us/assets/public/
compliance/monops/air/windroses/ausall.gif
Figure 09:
http://www.gaisma.com/en/location/austintexas.html
Notes
Figure 10:
http://www.ci.austin.tx.us/council_meetings/
wams_item_attach.cfm?recordID=7329
1. http://www.twdb.state.tx.us/
publications/reports/GroundWaterReports/
LimitedPublications/LP192.pdf
Appendix A:
http://www.srh.noaa.gov/ewx/?n=ausclidata.
htm
2. http://www.climate-zone.com/climate/unitedstates/louisiana/new-orleans/
3. http://lwf.ncdc.noaa.gov/oa/climate/online/
ccd/avgwind.html
4. http://www.ci.austin.tx.us/news/2007/
downloads/zeh_fact_sheet.pdf
References
Reference 01:
http://www.gaisma.com/en/location/austintexas.html
5. http://www.chicagomanualofstyle.org/tools_
citationguide.html
Reference 02:
http://www.rssweather.com/climate/Texas/
Austin%20City/
Figures
Reference 03:
http://www.srh.noaa.gov/ewx/?n=ausclidata.
htm
Figure 01:
http://en.wikipedia.org/wiki/Austin,_Texas
Reference 04:
http://www.tceq.state.tx.us/assets/public/
compliance/monops/air/windroses/ausall.gif
Figure 02:
http://www.twdb.state.tx.us/publications/
reports/GroundWaterReports/
LimitedPublications/LP192.pdf
Reference 05:
http://www.srrb.noaa.gov/highlights/sunrise/
azel.html
Figure 03:
http://www.twdb.state.tx.us/mapping/gisdata.
asp
Reference 06:
http://www.weather.gov/climate/xmacis.
php?wfo=ewx
Figure 04:
http://www.srh.noaa.gov/ewx/?n=ausclidata.
htm
7
UTSoA - Meadows Fellowship Seminar
2006
2007
2008
2009
1.80
6.92
0.82
0.74
0.89
0.14
0.51
1.47
7.54
5.95
2.86
3.04
2.89
2.25
3.52
2.84
5.28
7.01
1.70
1.77
3.18
5.41
0.74
1.35
0.48
9.84
0.38
0.25
0.22
2.50
2.39
0.77
3.00
3.97
0.02
6.86
3.93
1.13
2.01
1.29
1.16
0.72
4.20
0.67
0.40
34.70
46.95
16.07
2006
2007
2008
2009
MONTHLY/ ANNUAL/AVERAGE PRECIPITATION
AUSTIN TX (1856 - 2009)
ALL-TIME:
Maximum
Average
Median
Minimum
JAN
9.21
2.07
1.61
0.00
FEB
9.41
2.34
2.00
0.00
MAR APR MAY
7.54 19.82 14.10
2.32
3.25 4.33
2.07
2.65 3.61
0.00 TRACETRACE
JUN
JUL
14.96 12.80
3.07
2.14
2.25
1.54
0.00
0.00
AUG
10.88
2.23
1.59
0.00
SEP
20.78
3.45
2.81
0.00
OCT
12.63
3.23
2.66
0.00
NOV
14.10
2.51
1.98
0.00
DEC ANNUAL ALL-TIME:
16.14
64.68 Maximum
2.47
33.36
Average
1.88
33.47
Median
0.00
11.42
Minimum
30-YEAR
NORMAL:
1971-2000
JAN
1.89
FEB
1.99
MAR
2.15
APR
2.51
MAY
5.09
JUN
3.81
JUL
1.95
AUG
2.31
SEP
2.91
OCT
3.97
NOV
2.68
30-YEAR
DEC ANNUAL NORMAL:
2.44
33.70 1971-2000
30-YEAR
NORMAL:
1961-1990
JAN
1.71
FEB
2.17
MAR
1.87
APR
2.56
MAY
4.78
JUN
3.72
JUL
2.04
AUG
2.05
SEP
3.30
OCT
3.43
NOV
2.37
30-YEAR
DEC ANNUAL NORMAL:
1.88
31.88 1961-1990
30-YEAR
NORMAL:
1951-1980
JAN
1.60
FEB
2.49
MAR
1.68
APR
3.11
MAY
4.19
JUN
3.06
JUL
1.89
AUG
2.24
SEP
3.60
OCT
3.38
NOV
2.20
30-YEAR
DEC ANNUAL NORMAL:
2.06
31.50
1951-1980
30-YEAR
NORMAL:
1941-1970
JAN
1.88
FEB
3.09
MAR
1.89
APR
3.49
MAY
3.97
JUN
3.13
JUL
1.88
AUG
2.20
SEP
3.68
OCT
3.02
NOV
2.04
30-YEAR
DEC ANNUAL NORMAL:
2.22
32.49
1941-1970
30-YEAR
NORMAL:
1931-1960
JAN
2.35
FEB
2.58
MAR
2.13
APR
3.55
MAY
3.71
JUN
3.22
JUL
2.18
AUG
1.94
SEP
3.44
OCT
2.83
NOV
2.12
30-YEAR
DEC ANNUAL NORMAL:
2.53
32.58
1931-1960
JAN
54.4 FEB
55.8 MAR
60.7 APR
67.6 MAY
74.5 JUN
83.5 JUL
85.1
2.63
58.6 2.56
54.6 2.54
65.7 3.96
74.9 4.37
77.2 3.20
82.7 2.18
86.1
2007
47.5 54.5
65.5 65.7 75.5
80.9 81.0
SEASONAL
2008
50.4 59.4 Spring
63.3 69.7 79.7Summer
87.4 86.6
TOTALS
2009
53.5 60.9 9.75
63.8 68.8 78.4 8.07
86.6 89.5
1971-2000
AUG
85.6
1.67
88.5
30-YEAR
NORMAL:
2005
1921-1950
2006
85.0
86.2
89.1
SEP 70.8
OCT64.8
NOV
84.4
4.06 71.7
2.95 63.9
2.35
80.2
81.3 74.0 62.9
Autumn
80.6 71.0 62.7
9.56
78.2
30-YEAR
DEC 69.9
ANNUAL NORMAL:
52.1
2005
2.71 71.6
35.18 2006
1921-1950
54.8
54.7
69.0
2007
Winter 70.9
Annual 2008
SEASONAL
53.5
6.32
33.70 2009
TOTALS
1971-2000
AVERAGE MONTHLY/ANNUAL TEMPERATURE
*NOTE:
AUSTIN TX (1854 - 2009)
DATA MAY CONTAIN MISSING/ESTIMATED VALUES
ALL-TIME:
Record Hi
Average
Median
Record Lo
JAN
59.6
49.9
49.9
36.6
FEB
62.3
53.8
54.3
42.3
MAR APR MAY
68.4 75.9 80.6
60.8 68.3 75.0
60.8 68.1 74.7
51.4 59.2 66.9
JUN
87.4
81.5
81.6
71.4
JUL AUG
89.5 89.1
84.3 84.4
84.4 84.5
78.6 77.9
SEP OCT NOV
84.4 77.0 68.2
78.9 69.6 59.0
79.2 69.9 58.9
70.3 60.3 46.0
DEC ANNUAL ALL-TIME:
65.5
71.6 Record Hi
51.8
68.1 Average
52.4
68.1 Median
40.9
64.2 Record Lo
30-YEAR
NORMAL:
1971-2000
JAN
50.2
FEB
54.6
MAR APR MAY
61.7 68.3 75.1
JUN
81.0
JUL AUG
84.2 84.5
SEP OCT NOV
79.5 70.6 59.7
30-YEAR
DEC ANNUAL NORMAL:
52.1
68.5
1971-2000
30-YEAR
NORMAL:
1961-1990
JAN
48.8
FEB
52.8
MAR APR MAY
61.5 69.6 75.6
JUN
81.3
JUL AUG
84.5 84.8
SEP OCT NOV
80.2 71.1 60.9
30-YEAR
DEC ANNUAL NORMAL:
51.6
68.6
1961-1990
SEASONAL
AVERAGES
1971-2000
Spring
68.4
Summer
83.2
*NOTE:
Appendix
A: Average temperature and precipitation for Austin, TX. (Data taken at Camp Mabry)
8
DATA MAY
CONTAIN
MISSING/
ESTIMATED
VALUES
Autumn
69.9
Winter
52.3
Annual SEASONAL
68.5 AVERAGES
1971-2000
Austin Climate Data
9