Official 1981-2010 Climate Normals City: MORRISONVILLE State: IL ID: 115841 Latitude: 39.4158 Longitude: -89.4614 Elevation: 629.8 ft Temperature-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High: 34.4 39.6 51.1 64.2 74.0 82.9 85.9 84.9 79.5 67.0 52.5 38.3 Mean: 26.2 30.7 41.2 52.9 63.2 72.4 75.3 73.8 66.9 54.7 42.8 30.1 Low: 18.0 21.7 31.3 41.6 52.4 61.9 64.8 62.7 54.2 42.5 33.0 22.0 CDD: 0 0 2 14 79 238 322 278 131 18 0 0 HDD: 1203 962 739 377 135 16 1 5 75 336 668 1080 Number of Days T090: 0.0 0.0 0.0 0.0 0.6 3.9 6.8 6.2 2.7 0.1 0.0 0.0 T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 T000: 2.7 1.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.5 T032: 27.5 23.4 17.5 4.4 0.0 0.0 0.0 0.0 0.2 4.5 14.6 25.5 ------------------------------------------------------------------------------------------ Annual Values High Temp: 63.0 F Mean Temp: 52.6 F Low Temp: 42.3 F Cooling DD: 1082 Heating DD: 5597 Days above 90 (T090): 20.4 Days above 100 (T100): 0.2 Days below 0 (T000): 5.8 Days below 32 (T032): 117.7 ------------------------------------------------------------------------------------------ Precipitation-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Prcp: 2.01 1.94 2.64 3.48 4.35 3.75 3.60 3.03 3.29 2.97 3.69 2.63 Snow: 5.7 4.8 2.7 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.6 5.0 Number of Days P001: 7.2 6.9 9.1 10.2 10.5 9.0 7.7 7.4 6.1 8.4 8.8 8.2 P010: 4.0 4.4 6.1 6.8 7.6 6.2 5.6 5.1 4.5 5.7 6.3 4.9 P100: 0.4 0.4 0.4 0.6 1.2 1.0 1.0 0.8 1.0 0.8 0.9 0.7 S001: 2.4 2.1 1.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.3 2.1 S010: 2.3 1.7 0.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 2.0 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: 37.38 inches Snowfall: 19.0 inches Days precipitation at or above 0 inches (P000): 99.5 Days precipitation at or above 0.10 inches (P010): 67.2 Days Precipitation at or above 1.00 inches (P100): 9.2 Days Snowfall at or above 0.1 inches (S001): 8.0 Days Snowfall at or above 1.0 inches (S010): 7.2 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