Official 1981-2010 Climate Normals City: MORRIS 1 NW State: IL ID: 115825 Latitude: 41.3708 Longitude: -88.4336 Elevation: 523.8 ft Temperature-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High: 31.0 36.1 47.8 61.3 71.6 81.5 84.5 82.4 76.6 64.6 49.6 35.4 Mean: 23.2 27.8 38.3 50.7 61.1 71.0 74.5 72.6 65.4 53.6 41.2 27.7 Low: 15.4 19.5 28.9 40.1 50.5 60.5 64.4 62.8 54.2 42.5 32.8 20.0 CDD: 0 0 1 10 62 208 296 241 102 16 1 0 HDD: 1295 1041 827 439 184 29 3 6 90 371 715 1156 Number of Days T090: 0.0 0.0 0.0 0.0 0.7 4.8 5.4 2.6 1.2 0.2 0.0 0.0 T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 T000: 4.3 1.7 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.1 T032: 28.4 24.6 20.3 5.9 0.4 0.0 0.0 0.0 0.1 3.6 14.2 27.2 ------------------------------------------------------------------------------------------ Annual Values High Temp: 60.3 F Mean Temp: 50.7 F Low Temp: 41.1 F Cooling DD: 937 Heating DD: 6156 Days above 90 (T090): 14.9 Days above 100 (T100): 0.1 Days below 0 (T000): 7.2 Days below 32 (T032): 124.7 ------------------------------------------------------------------------------------------ Precipitation-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Prcp: 1.82 1.67 2.26 3.12 3.96 4.40 5.13 3.95 3.34 3.06 2.96 2.24 Snow: 8.0 5.4 2.9 0.4 0.0 0.0 0.0 0.0 0.0 0.0 1.0 6.3 Number of Days P001: 10.0 7.8 8.9 9.9 12.2 10.9 9.0 9.6 7.1 9.3 7.7 9.7 P010: 5.1 3.6 5.4 6.8 7.9 6.8 6.6 6.1 4.4 5.5 4.8 4.9 P100: 0.4 0.3 0.5 0.4 0.9 1.5 1.6 1.5 1.0 0.6 0.4 0.5 S001: 5.9 3.6 1.7 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.9 4.8 S010: 3.5 1.7 0.8 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.4 2.4 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: 37.91 inches Snowfall: 24.0 inches Days precipitation at or above 0 inches (P000): 112.1 Days precipitation at or above 0.10 inches (P010): 67.9 Days Precipitation at or above 1.00 inches (P100): 9.6 Days Snowfall at or above 0.1 inches (S001): 17.3 Days Snowfall at or above 1.0 inches (S010): 9.0 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