Official 1981-2010 Climate Normals City: WATSEKA 2 NW State: IL ID: 119021 Latitude: 40.7928 Longitude: -87.7556 Elevation: 619.9 ft Temperature-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High: 31.5 36.3 48.3 61.4 72.3 81.6 84.2 82.8 77.5 64.7 50.0 35.5 Mean: 23.5 27.4 38.5 50.2 60.9 70.5 73.5 71.5 64.6 52.8 40.8 27.7 Low: 15.5 18.6 28.7 38.9 49.6 59.5 62.8 60.2 51.7 40.8 31.6 20.0 CDD: 0 0 1 8 60 195 267 212 93 14 0 0 HDD: 1286 1051 822 454 185 29 4 11 105 394 726 1154 Number of Days T090: 0.0 0.0 0.0 0.0 0.8 3.8 5.0 3.4 1.7 0.1 0.0 0.0 T100: 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.2 0.0 0.0 0.0 0.0 T000: 4.6 2.4 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.4 T032: 28.3 24.8 20.3 6.7 0.4 0.0 0.0 0.0 0.2 6.0 15.6 26.6 ------------------------------------------------------------------------------------------ Annual Values High Temp: 60.6 F Mean Temp: 50.3 F Low Temp: 39.9 F Cooling DD: 850 Heating DD: 6222 Days above 90 (T090): 14.7 Days above 100 (T100): 0.3 Days below 0 (T000): 9.6 Days below 32 (T032): 129.0 ------------------------------------------------------------------------------------------ Precipitation-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Prcp: 1.67 1.80 2.90 3.57 4.27 4.14 4.49 3.45 3.08 3.41 3.20 2.38 Snow: 5.3 4.8 1.6 0.8 0.0 0.0 0.0 0.0 0.0 0.0 0.5 5.5 Number of Days P001: 9.0 7.3 9.7 11.6 11.5 10.2 9.7 8.7 7.9 8.6 9.9 10.1 P010: 4.2 4.3 6.0 7.4 7.7 7.2 7.1 5.6 5.4 5.6 6.3 5.4 P100: 0.2 0.3 0.4 0.9 0.9 1.2 1.3 0.9 0.6 0.8 0.5 0.3 S001: 4.1 2.7 1.1 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.6 3.4 S010: 2.0 1.6 0.7 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.2 2.1 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: 38.36 inches Snowfall: 18.5 inches Days precipitation at or above 0 inches (P000): 114.2 Days precipitation at or above 0.10 inches (P010): 72.2 Days Precipitation at or above 1.00 inches (P100): 8.3 Days Snowfall at or above 0.1 inches (S001): 12.2 Days Snowfall at or above 1.0 inches (S010): 6.8 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