Official 1981-2010 Climate Normals City: LAWRENCEVILLE State: IL ID: 114957 Latitude: 38.7267 Longitude: -87.6900 Elevation: 441.8 ft Temperature-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High: 38.5 43.4 54.0 65.9 75.8 85.0 88.3 86.8 80.7 68.6 55.6 41.9 Mean: 30.5 34.4 43.9 54.7 64.8 74.0 77.3 75.7 68.6 56.8 45.8 33.8 Low: 22.5 25.4 33.7 43.5 53.7 63.1 66.3 64.7 56.4 44.9 36.0 25.7 CDD: 0 0 2 16 97 281 381 335 158 26 2 0 HDD: 1069 857 657 325 104 9 0 2 52 282 578 967 Number of Days T090: 0.0 0.0 0.0 0.0 1.1 7.2 11.9 9.6 3.4 0.1 0.0 0.0 T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.3 0.0 0.0 0.0 0.0 T000: 1.4 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 T032: 24.0 20.6 14.3 2.5 0.0 0.0 0.0 0.0 0.0 2.2 10.8 22.6 ------------------------------------------------------------------------------------------ Annual Values High Temp: 65.5 F Mean Temp: 55.1 F Low Temp: 44.8 F Cooling DD: 1297 Heating DD: 4902 Days above 90 (T090): 33.2 Days above 100 (T100): 0.5 Days below 0 (T000): 2.1 Days below 32 (T032): 97.0 ------------------------------------------------------------------------------------------ Precipitation-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Prcp: 2.83 2.59 3.73 4.09 5.80 4.21 4.31 2.96 3.37 3.87 4.22 3.53 Snow: 4.3 4.5 1.7 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.3 4.7 Number of Days P001: 9.3 8.8 9.8 10.4 11.3 10.1 8.4 7.2 7.0 7.8 9.3 10.1 P010: 5.2 4.7 6.3 7.2 8.5 6.5 6.0 4.7 4.8 5.3 6.3 6.2 P100: 0.5 0.7 0.8 1.0 1.9 1.3 1.4 1.0 1.0 1.2 1.4 0.7 S001: 4.5 3.6 1.3 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.4 2.9 S010: 1.9 1.4 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 1.4 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: 45.51 inches Snowfall: 15.7 inches Days precipitation at or above 0 inches (P000): 109.5 Days precipitation at or above 0.10 inches (P010): 71.7 Days Precipitation at or above 1.00 inches (P100): 12.9 Days Snowfall at or above 0.1 inches (S001): 12.8 Days Snowfall at or above 1.0 inches (S010): 5.3 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