Official 1981-2010 Climate Normals
City: CARBONDALE SEWAGE PLANT
State: IL
ID: 111265
Latitude: 37.7308
Longitude: -89.1658
Elevation: 390.0 ft
Temperature-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High: 41.8 46.9 57.1 68.3 77.0 85.6 89.0 88.7 81.6 70.3 57.7 45.0
Mean: 32.4 36.6 45.8 56.3 65.8 74.6 78.1 76.5 68.5 57.0 46.6 35.4
Low: 23.0 26.2 34.6 44.3 54.6 63.6 67.3 64.3 55.3 43.7 35.6 25.9
CDD: 0 0 4 30 109 294 408 358 158 28 3 0
HDD: 1010 797 597 291 84 7 0 1 55 276 553 916
Number of Days
T090: 0.0 0.0 0.0 0.0 0.8 7.5 14.3 13.4 4.0 0.2 0.0 0.0
T100: 0.0 0.0 0.0 0.0 0.0 0.1 0.2 0.8 0.0 0.0 0.0 0.0
T000: 0.9 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4
T032: 24.6 20.2 13.8 3.2 0.0 0.0 0.0 0.0 0.1 3.7 12.0 22.5
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Annual Values
High Temp: 67.5 F
Mean Temp: 56.2 F
Low Temp: 44.9 F
Cooling DD: 1391
Heating DD: 4587
Days above 90 (T090): 40.3
Days above 100 (T100): 1.1
Days below 0 (T000): 1.7
Days below 32 (T032): 100.1
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Precipitation-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Prcp: 3.06 3.08 4.15 4.45 5.37 4.51 3.66 3.26 3.14 3.81 4.63 4.05
Snow: 3.0 4.1 1.2 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 2.6
Number of Days
P001: 9.5 8.6 11.5 11.4 12.5 9.4 8.6 7.9 7.7 8.3 10.2 10.8
P010: 5.7 5.6 7.2 8.0 8.2 6.3 5.2 5.4 4.9 5.3 6.8 6.7
P100: 0.8 0.7 1.0 1.0 1.6 1.4 1.0 0.9 0.6 1.0 1.0 1.0
S001: 1.7 1.7 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 1.6
S010: 1.1 1.5 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.9
S100: 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
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Annual Values
Precipitation: 47.17 inches
Snowfall: 11.0 inches
Days precipitation at or above 0 inches (P000): 116.4
Days precipitation at or above 0.10 inches (P010): 75.3
Days Precipitation at or above 1.00 inches (P100): 12.0
Days Snowfall at or above 0.1 inches (S001): 5.5
Days Snowfall at or above 1.0 inches (S010): 3.9
Days Snowfall at or above 10.0 inches (S100): 0.0
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City: CARBONDALE SOUTHERN IL
State: IL
ID: 093810
Latitude: 37.7797
Longitude: -89.2497
Elevation: 405.7 ft
Temperature-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High: 41.4 46.4 56.8 67.5 76.8 85.5 88.5 87.5 80.2 69.9 56.4 44.2
Mean: 32.9 37.1 46.4 56.3 66.2 74.7 78.2 76.5 68.1 57.5 46.6 35.9
Low: 24.5 27.9 36.0 45.1 55.6 64.0 67.8 65.5 56.1 45.2 36.9 27.6
CDD: 0 0 3 23 110 296 408 357 143 29 2 0
HDD: 993 780 579 284 73 4 0 1 49 260 552 902
Number of Days
T090: 0.0 0.0 0.0 0.0 0.8 6.6 12.4 8.9 2.0 0.2 0.0 0.0
T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.5 0.0 0.0 0.0 0.0
T000: 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3
T032: 24.3 19.0 11.7 2.7 0.1 0.0 0.0 0.0 0.0 2.4 10.5 21.1
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Annual Values
High Temp: 66.8 F
Mean Temp: 56.5 F
Low Temp: 46.1 F
Cooling DD: 1370
Heating DD: 4476
Days above 90 (T090): 31.0
Days above 100 (T100): 0.6
Days below 0 (T000): 0.8
Days below 32 (T032): 91.8
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Precipitation-Related Pseudonormals
For stations with short records, linear combinations of normals from nearby sites were used
to compute so-called pseudonormals.
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Prcp: 2.93 2.77 3.94 4.14 5.16 3.99 3.59 2.88 3.42 3.87 4.25 3.63
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Annual Values
Precipitation: 44.57 inches
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KEY:
High - average daily high temperature, degrees F
Mean - average daily mean temperature, degrees F
Low - average daily low temperature, degrees F
CDD - cooling degree days, base 50F
HDD - heating degree days, base 50F
T090 - number of Days with Temperatures above 90 degrees F
T100 - number of Days with Temperatures above 100 degrees F
T000 - number of Days with Temperatures below 0 degrees F
T032 - number of Days with Temperatures below 32 degrees F
Prcp - precipitation, inches
Snow - snowfall, inches
P001 - number of Days with Precipitation of 0.01 inches or more
P010 - number of Days with Precipitation of 0.10 inches or more
P100 - number of Days with Precipitation of 1.00 inches or more
S001 - number of Days with Snowfall of 0.1 inches or more
S010 - number of Days with Snowfall of 1.0 inches or more
S100 - number of Days with Snowfall of 10.0 inches or more
Page Source:
Dr. Jim Angel, State Climatologist
Illinois State Water Survey
Prairie Research Institute
University of Illinois
Data Source:
NOAA National Climatic Data Center
