Official 1981-2010 Climate Normals City: GIBSON CITY State: IL ID: 113413 Latitude: 40.4731 Longitude: -88.3653 Elevation: 749.8 ft Temperature-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High: 31.4 36.3 48.1 61.5 72.4 81.5 83.9 82.5 76.9 63.7 49.3 35.0 Mean: 24.5 29.0 39.5 50.5 61.4 70.7 73.6 71.6 65.0 52.5 41.1 28.0 Low: 17.6 21.7 30.8 39.4 50.5 59.9 63.3 60.7 53.0 41.3 33.0 21.0 CDD: 0 0 1 9 61 199 270 217 100 11 0 0 HDD: 1255 1008 793 445 171 29 3 13 102 398 716 1147 Number of Days T090: 0.0 0.0 0.0 0.0 0.7 4.0 4.9 3.9 1.3 0.0 0.0 0.0 T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.2 0.0 0.0 0.0 0.0 T000: 3.4 1.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.3 T032: 27.1 22.5 17.9 6.0 0.2 0.0 0.0 0.0 0.1 5.5 14.3 25.5 ------------------------------------------------------------------------------------------ Annual Values High Temp: 60.3 F Mean Temp: 50.7 F Low Temp: 41.1 F Cooling DD: 869 Heating DD: 6080 Days above 90 (T090): 14.7 Days above 100 (T100): 0.3 Days below 0 (T000): 7.5 Days below 32 (T032): 119.1 ------------------------------------------------------------------------------------------ Precipitation-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Prcp: 1.75 1.71 2.51 3.47 4.22 4.09 3.81 3.83 2.69 3.06 3.16 2.42 Snow: 6.0 4.9 1.6 0.8 0.0 0.0 0.0 0.0 0.0 0.1 0.9 5.7 Number of Days P001: 8.0 7.5 9.9 11.0 11.1 10.1 8.7 8.9 7.1 9.4 10.3 9.5 P010: 3.7 3.9 5.8 7.2 7.7 6.6 6.5 6.0 4.7 5.6 6.5 5.3 P100: 0.2 0.3 0.3 0.8 0.9 0.8 1.3 1.2 0.6 0.9 0.7 0.5 S001: 4.2 3.6 1.6 0.3 0.0 0.0 0.0 0.0 0.0 0.1 0.9 3.3 S010: 2.3 2.1 0.7 0.2 0.0 0.0 0.0 0.0 0.0 0.1 0.4 2.0 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: 36.72 inches Snowfall: 20.0 inches Days precipitation at or above 0 inches (P000): 111.5 Days precipitation at or above 0.10 inches (P010): 69.5 Days Precipitation at or above 1.00 inches (P100): 8.5 Days Snowfall at or above 0.1 inches (S001): 14.0 Days Snowfall at or above 1.0 inches (S010): 7.8 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