Official 1981-2010 Climate Normals City: PITTSFIELD #2 State: IL ID: 116837 Latitude: 39.6222 Longitude: -90.8058 Elevation: 669.8 ft Temperature-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High: 35.3 40.5 51.9 64.1 74.0 83.0 86.6 85.7 78.8 66.5 53.0 38.8 Mean: 26.5 31.4 41.5 53.1 63.2 72.3 76.2 74.5 66.5 54.6 43.3 30.2 Low: 17.7 22.4 31.1 42.1 52.3 61.6 65.9 63.3 54.2 42.7 33.6 21.6 CDD: 0 0 2 17 78 235 350 298 120 20 1 0 HDD: 1193 939 730 374 135 16 2 4 75 342 652 1078 Number of Days T090: 0.0 0.0 0.0 0.1 0.8 5.3 9.1 7.3 2.1 0.1 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: 3.0 0.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 T032: 27.5 22.9 17.7 4.4 0.1 0.0 0.0 0.0 0.0 4.3 13.5 26.0 ------------------------------------------------------------------------------------------ Annual Values High Temp: 63.3 F Mean Temp: 52.9 F Low Temp: 42.5 F Cooling DD: 1120 Heating DD: 5541 Days above 90 (T090): 24.7 Days above 100 (T100): 0.8 Days below 0 (T000): 5.0 Days below 32 (T032): 116.4 ------------------------------------------------------------------------------------------ Precipitation-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Prcp: 1.85 2.34 3.01 4.04 4.67 4.43 4.09 4.00 3.99 3.09 3.54 2.41 Number of Days P001: 5.9 5.7 8.2 10.4 11.3 10.3 8.3 7.5 8.0 7.9 7.5 6.2 P010: 4.1 4.3 6.3 7.5 7.7 7.3 5.5 5.4 5.4 5.8 5.9 4.4 P100: 0.5 0.6 0.4 1.2 1.2 1.5 1.3 1.4 1.1 0.7 0.7 0.4 ------------------------------------------------------------------------------------------ Annual Values Precipitation: 41.46 inches Days precipitation at or above 0 inches (P000): 97.2 Days precipitation at or above 0.10 inches (P010): 69.6 Days Precipitation at or above 1.00 inches (P100): 11.0 ------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ 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