Official 1981-2010 Climate Normals City: FREEPORT WASTE WTP State: IL ID: 113262 Latitude: 42.2972 Longitude: -89.6039 Elevation: 749.8 ft Temperature-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High: 28.5 33.6 45.6 59.5 70.7 80.2 83.4 81.5 74.4 62.0 46.8 32.3 Mean: 19.8 24.5 35.7 48.2 59.3 69.0 72.7 70.5 62.4 50.3 37.6 24.0 Low: 11.2 15.4 25.9 36.8 47.8 57.8 61.9 59.5 50.3 38.5 28.4 15.8 CDD: 0 0 0 7 41 158 243 188 65 6 0 0 HDD: 1399 1134 907 512 220 38 6 17 145 463 822 1269 Number of Days T090: 0.0 0.0 0.0 0.0 0.4 2.3 5.1 3.0 0.8 0.1 0.0 0.0 T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.0 0.0 0.0 T000: 6.8 3.9 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 3.9 T032: 29.8 26.1 23.9 8.6 0.7 0.0 0.0 0.0 0.4 7.9 20.3 28.5 ------------------------------------------------------------------------------------------ Annual Values High Temp: 58.3 F Mean Temp: 47.9 F Low Temp: 37.5 F Cooling DD: 708 Heating DD: 6933 Days above 90 (T090): 11.7 Days above 100 (T100): 0.2 Days below 0 (T000): 14.9 Days below 32 (T032): 146.4 ------------------------------------------------------------------------------------------ Precipitation-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Prcp: 1.37 1.52 2.08 3.30 3.99 4.61 3.94 4.29 3.66 2.88 2.66 1.76 Snow: 9.0 6.5 3.5 0.8 0.0 0.0 0.0 0.0 0.0 0.0 1.8 9.7 Number of Days P001: 7.7 7.1 8.9 9.9 12.1 11.0 9.8 10.2 9.0 9.1 8.8 9.0 P010: 3.7 4.0 4.6 6.4 7.5 7.5 6.0 5.8 5.6 5.2 5.0 4.7 P100: 0.2 0.2 0.3 0.8 0.9 1.3 1.1 1.3 1.2 0.8 0.5 0.3 S001: 5.8 4.1 2.3 0.5 0.0 0.0 0.0 0.0 0.0 0.0 1.0 5.3 S010: 3.3 2.3 1.1 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.6 3.4 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: 36.06 inches Snowfall: 31.3 inches Days precipitation at or above 0 inches (P000): 112.6 Days precipitation at or above 0.10 inches (P010): 66.0 Days Precipitation at or above 1.00 inches (P100): 8.9 Days Snowfall at or above 0.1 inches (S001): 19.0 Days Snowfall at or above 1.0 inches (S010): 11.0 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