Official 1981-2010 Climate Normals
City: BENTLEY
State: IL
ID: 110598
Latitude: 40.3436
Longitude: -91.1125
Elevation: 649.8 ft
Temperature-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High: 34.7 39.7 51.7 64.1 74.1 83.4 88.2 86.3 79.4 67.0 52.6 38.4
Mean: 25.2 29.8 40.9 52.4 62.8 71.8 76.3 74.1 66.2 54.7 41.8 29.0
Low: 15.7 20.0 30.1 40.7 51.4 60.3 64.3 62.0 53.0 42.4 31.0 19.7
CDD: 0 0 1 16 72 222 349 288 116 20 0 0
HDD: 1233 984 749 394 142 17 1 4 80 339 696 1114
Number of Days
T090: 0.0 0.0 0.0 0.1 0.9 5.7 11.7 8.2 3.3 0.4 0.0 0.0
T100: 0.0 0.0 0.0 0.0 0.0 0.1 0.4 0.3 0.0 0.0 0.0 0.0
T000: 3.6 1.6 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0
T032: 28.4 24.6 19.0 5.9 0.2 0.0 0.0 0.0 0.1 4.3 16.9 27.2
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Annual Values
High Temp: 63.4 F
Mean Temp: 52.2 F
Low Temp: 41.0 F
Cooling DD: 1084
Heating DD: 5753
Days above 90 (T090): 30.2
Days above 100 (T100): 0.8
Days below 0 (T000): 7.4
Days below 32 (T032): 126.6
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Precipitation-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Prcp: 1.41 1.79 2.75 3.86 4.91 4.52 4.42 4.16 3.72 3.02 2.78 2.08
Snow: 6.0 5.3 2.1 0.5 0.0 0.0 0.0 0.0 0.0 0.0 1.0 5.8
Number of Days
P001: 6.9 6.4 8.6 10.8 11.8 10.3 9.3 8.9 7.4 8.8 8.6 7.5
P010: 3.5 3.7 5.6 7.0 8.0 6.7 6.0 5.6 5.1 5.3 5.3 4.3
P100: 0.3 0.4 0.7 0.9 1.3 1.2 1.3 1.3 1.0 0.7 0.7 0.4
S001: 4.3 3.4 1.1 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.7 3.6
S010: 2.5 2.2 0.7 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.4 2.3
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: 39.42 inches
Snowfall: 20.7 inches
Days precipitation at or above 0 inches (P000): 105.3
Days precipitation at or above 0.10 inches (P010): 66.1
Days Precipitation at or above 1.00 inches (P100): 10.2
Days Snowfall at or above 0.1 inches (S001): 13.3
Days Snowfall at or above 1.0 inches (S010): 8.2
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
