Official 1981-2010 Climate Normals City: BENTON 2 N State: IL ID: 110608 Latitude: 38.0336 Longitude: -88.9203 Elevation: 444.8 ft Temperature-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High: 40.7 44.9 55.9 67.5 76.4 85.0 88.9 88.5 80.7 68.7 56.6 42.5 Mean: 32.9 36.2 46.0 56.4 65.4 74.3 78.2 77.1 68.8 57.2 47.0 34.5 Low: 25.0 27.4 36.1 45.3 54.4 63.7 67.5 65.6 57.0 45.7 37.5 26.4 CDD: 0 0 4 28 102 287 409 375 166 26 4 0 HDD: 997 808 593 286 90 7 0 1 50 268 543 947 Number of Days T090: 0.0 0.0 0.0 0.0 1.1 6.9 13.7 13.0 3.6 0.0 0.0 0.0 T100: 0.0 0.0 0.0 0.0 0.0 0.1 0.5 0.6 0.1 0.0 0.0 0.0 T000: 0.4 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 T032: 23.4 19.2 11.1 2.1 0.0 0.0 0.0 0.0 0.0 1.9 9.2 21.9 ------------------------------------------------------------------------------------------ Annual Values High Temp: 66.5 F Mean Temp: 56.3 F Low Temp: 46.0 F Cooling DD: 1402 Heating DD: 4590 Days above 90 (T090): 38.4 Days above 100 (T100): 1.2 Days below 0 (T000): 1.0 Days below 32 (T032): 88.7 ------------------------------------------------------------------------------------------ Precipitation-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Prcp: 2.77 2.86 3.75 4.42 5.34 4.53 3.28 2.84 3.05 3.89 4.43 3.44 Snow: 1.8 1.6 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 Number of Days P001: 5.6 6.1 8.2 8.0 8.9 7.2 5.4 5.6 4.7 6.7 6.8 5.9 P010: 4.1 4.4 6.1 6.4 7.2 5.8 4.3 4.4 3.8 5.1 5.7 4.9 P100: 0.7 1.0 1.1 1.3 1.5 1.3 1.1 0.9 1.1 1.2 1.1 0.9 S001: 0.8 0.7 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 S010: 0.5 0.6 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 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 ------------------------------------------------------------------------------------------ Annual Values Precipitation: 44.60 inches Snowfall: 5.2 inches Days precipitation at or above 0 inches (P000): 79.1 Days precipitation at or above 0.10 inches (P010): 62.2 Days Precipitation at or above 1.00 inches (P100): 13.2 Days Snowfall at or above 0.1 inches (S001): 2.0 Days Snowfall at or above 1.0 inches (S010): 1.6 Days Snowfall at or above 10.0 inches (S100): 0.0 ------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ 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