Official 1981-2010 Climate Normals City: CARLYLE RSVR State: IL ID: 111290 Latitude: 38.6308 Longitude: -89.3658 Elevation: 500.9 ft Temperature-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High: 37.7 42.9 53.4 65.0 74.2 83.2 86.8 86.2 79.4 67.5 54.6 40.6 Mean: 29.1 33.0 43.6 54.6 64.5 73.5 77.2 76.0 68.3 56.4 45.2 32.3 Low: 20.5 23.1 33.8 44.2 54.8 63.7 67.6 65.8 57.2 45.2 35.7 24.0 CDD: 0 0 2 19 90 263 378 343 154 25 1 0 HDD: 1113 896 666 331 106 10 0 2 56 293 597 1013 Number of Days T090: 0.0 0.0 0.0 0.0 0.2 4.6 9.4 8.1 2.1 0.1 0.0 0.0 T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.2 0.0 0.0 0.0 0.0 T000: 1.6 0.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.7 T032: 26.1 22.9 13.5 2.6 0.0 0.0 0.0 0.0 0.0 2.2 11.3 24.5 ------------------------------------------------------------------------------------------ Annual Values High Temp: 64.4 F Mean Temp: 54.6 F Low Temp: 44.7 F Cooling DD: 1278 Heating DD: 5083 Days above 90 (T090): 24.6 Days above 100 (T100): 0.4 Days below 0 (T000): 3.1 Days below 32 (T032): 103.1 ------------------------------------------------------------------------------------------ Precipitation-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Prcp: 2.56 2.52 3.44 3.97 5.28 4.37 4.22 2.80 3.16 3.60 3.99 3.59 Number of Days P001: 8.3 7.7 9.7 10.8 11.1 10.2 8.1 7.6 7.3 9.4 9.4 10.2 P010: 4.7 5.1 6.2 7.6 7.9 7.2 6.1 5.0 4.9 6.0 6.4 5.9 P100: 0.6 0.6 0.7 1.1 1.5 1.5 1.4 0.7 1.1 1.0 1.0 0.7 ------------------------------------------------------------------------------------------ Annual Values Precipitation: 43.50 inches Days precipitation at or above 0 inches (P000): 109.8 Days precipitation at or above 0.10 inches (P010): 73.0 Days Precipitation at or above 1.00 inches (P100): 11.9 ------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ 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