Official 1981-2010 Climate Normals
City: CONGERVILLE 2NW
State: IL
ID: 111836
Latitude: 40.6211
Longitude: -89.2414
Elevation: 634.7 ft
Temperature-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High: 32.8 38.2 50.5 63.6 73.6 82.7 85.8 84.2 79.0 66.7 51.3 37.0
Mean: 23.7 28.7 39.5 51.6 61.5 70.8 74.3 72.1 65.2 53.6 41.5 27.6
Low: 14.6 19.3 28.6 39.6 49.5 58.9 62.9 60.1 51.4 40.5 31.6 18.3
CDD: 0 0 1 13 64 199 292 230 96 18 0 0
HDD: 1280 1015 790 415 171 26 2 9 90 371 707 1157
Number of Days
T090: 0.0 0.0 0.0 0.0 1.3 5.0 7.0 4.3 2.2 0.3 0.0 0.0
T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0
T000: 4.6 1.5 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.1
T032: 28.8 25.1 21.1 6.8 0.6 0.0 0.0 0.0 0.1 6.4 16.3 27.2
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Annual Values
High Temp: 62.2 F
Mean Temp: 51.0 F
Low Temp: 39.7 F
Cooling DD: 913
Heating DD: 6033
Days above 90 (T090): 20.3
Days above 100 (T100): 0.1
Days below 0 (T000): 8.2
Days below 32 (T032): 132.6
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Precipitation-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Prcp: 1.87 1.71 2.46 3.49 4.65 3.93 3.98 4.07 3.19 3.08 3.24 2.17
Snow: 7.3 4.2 2.7 0.6 0.0 0.0 0.0 0.0 0.0 0.0 1.1 5.8
Number of Days
P001: 8.3 6.7 8.9 11.0 11.3 10.6 8.9 8.7 6.6 9.2 8.3 8.1
P010: 4.6 3.9 5.5 6.8 8.1 6.8 6.5 6.2 4.8 6.2 5.8 4.8
P100: 0.6 0.4 0.4 0.7 1.2 0.9 1.1 1.2 0.7 0.5 0.5 0.3
S001: 4.7 3.5 1.4 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.6 3.4
S010: 2.3 1.5 0.9 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.3 1.9
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: 37.84 inches
Snowfall: 21.7 inches
Days precipitation at or above 0 inches (P000): 106.6
Days precipitation at or above 0.10 inches (P010): 70.0
Days Precipitation at or above 1.00 inches (P100): 8.5
Days Snowfall at or above 0.1 inches (S001): 13.8
Days Snowfall at or above 1.0 inches (S010): 7.0
Days Snowfall at or above 10.0 inches (S100): 0.0
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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
