Official 1981-2010 Climate Normals City: GEBHARD WOODS SP State: IL ID: 113369 Latitude: 41.3500 Longitude: -88.4333 Elevation: 504.8 ft Temperature-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High: 31.5 35.7 48.6 61.9 73.6 82.2 84.6 82.9 76.4 63.7 50.1 35.6 Mean: 23.2 26.7 38.7 50.5 61.6 70.5 73.7 72.3 64.3 52.3 40.9 27.7 Low: 14.9 17.7 28.7 39.2 49.7 58.9 62.9 61.8 52.1 40.8 31.7 19.8 CDD: 0 0 1 8 62 193 275 238 90 8 0 0 HDD: 1295 1072 818 442 166 27 4 11 113 403 723 1156 Number of Days T090: 0.0 0.0 0.0 0.1 1.0 3.0 6.4 4.1 1.5 0.0 0.0 0.0 T100: 0.0 0.0 0.0 0.0 0.0 0.1 0.4 0.1 0.0 0.0 0.0 0.0 T000: 5.0 2.7 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.6 T032: 28.2 25.2 20.6 5.5 0.3 0.0 0.0 0.0 0.2 5.3 15.7 26.6 ------------------------------------------------------------------------------------------ Annual Values High Temp: 60.7 F Mean Temp: 50.3 F Low Temp: 40.0 F Cooling DD: 875 Heating DD: 6229 Days above 90 (T090): 16.2 Days above 100 (T100): 0.6 Days below 0 (T000): 10.4 Days below 32 (T032): 127.7 ------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ 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