Official 1981-2010 Climate Normals City: PRINCEVILLE 2W State: IL ID: 117004 Latitude: 40.9314 Longitude: -89.7797 Elevation: 734.7 ft Temperature-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High: 32.5 37.7 50.2 63.7 73.8 82.2 85.5 83.7 77.4 65.2 51.0 36.1 Mean: 23.4 28.1 39.3 51.3 61.8 70.9 74.1 72.0 64.4 52.8 40.6 27.3 Low: 14.3 18.6 28.4 39.0 49.9 59.6 62.7 60.4 51.4 40.5 30.3 18.4 CDD: 0 0 1 15 64 203 286 231 95 14 1 0 HDD: 1290 1032 798 424 162 26 4 12 113 390 731 1170 Number of Days T090: 0.0 0.0 0.0 0.1 0.8 4.8 7.7 5.6 1.9 0.1 0.0 0.0 T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.4 0.0 0.0 0.0 0.0 T000: 5.2 2.8 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.7 T032: 28.9 24.5 20.6 6.7 0.4 0.0 0.0 0.0 0.5 6.2 17.0 27.5 ------------------------------------------------------------------------------------------ Annual Values High Temp: 61.7 F Mean Temp: 50.6 F Low Temp: 39.6 F Cooling DD: 909 Heating DD: 6152 Days above 90 (T090): 21.0 Days above 100 (T100): 0.6 Days below 0 (T000): 10.9 Days below 32 (T032): 132.2 ------------------------------------------------------------------------------------------ Precipitation-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Prcp: 1.88 1.89 2.77 3.50 5.05 3.87 4.08 3.79 3.46 2.87 3.03 2.23 Snow: 6.5 6.4 1.9 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.9 6.2 Number of Days P001: 6.9 6.0 8.9 10.4 11.6 10.2 9.1 9.7 8.3 9.0 9.0 7.5 P010: 4.2 3.8 6.1 7.5 8.0 7.0 6.6 6.9 5.4 5.6 5.8 5.3 P100: 0.6 0.5 0.7 0.7 1.1 0.8 1.0 0.8 0.9 0.4 0.7 0.4 S001: 4.1 3.3 1.4 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.7 3.6 S010: 2.5 1.9 0.8 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.4 2.2 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: 38.42 inches Snowfall: 22.0 inches Days precipitation at or above 0 inches (P000): 106.6 Days precipitation at or above 0.10 inches (P010): 72.2 Days Precipitation at or above 1.00 inches (P100): 8.6 Days Snowfall at or above 0.1 inches (S001): 13.2 Days Snowfall at or above 1.0 inches (S010): 7.9 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