Official 1981-2010 Climate Normals City: GALESBURG State: IL ID: 113320 Latitude: 40.9464 Longitude: -90.3856 Elevation: 770.8 ft Temperature-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High: 30.3 35.0 47.9 61.5 71.7 80.8 84.0 82.2 75.4 62.9 48.3 33.9 Mean: 21.9 26.1 38.0 50.9 61.4 71.1 74.6 72.7 64.7 52.5 39.1 26.0 Low: 13.5 17.2 28.0 40.3 51.0 61.3 65.1 63.2 54.0 42.1 29.9 18.1 CDD: 0 0 0 11 57 204 298 247 96 11 0 0 HDD: 1336 1089 839 434 170 22 2 8 105 398 777 1209 Number of Days T090: 0.0 0.0 0.0 0.0 0.3 2.4 5.5 3.7 1.0 0.1 0.0 0.0 T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.2 0.0 0.0 0.0 0.0 T000: 5.3 3.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.8 T032: 29.3 25.6 21.2 5.9 0.2 0.0 0.0 0.0 0.2 4.4 17.9 27.9 ------------------------------------------------------------------------------------------ Annual Values High Temp: 59.6 F Mean Temp: 50.0 F Low Temp: 40.4 F Cooling DD: 924 Heating DD: 6390 Days above 90 (T090): 13.0 Days above 100 (T100): 0.3 Days below 0 (T000): 11.4 Days below 32 (T032): 132.6 ------------------------------------------------------------------------------------------ Precipitation-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Prcp: 1.51 1.63 2.76 3.72 4.45 4.30 4.38 3.97 3.47 2.75 2.87 2.27 Snow: 7.8 5.9 2.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.8 5.9 Number of Days P001: 7.8 7.0 9.3 11.0 11.3 9.4 8.9 9.3 7.8 9.1 8.8 9.0 P010: 3.9 3.8 6.1 6.9 8.0 6.8 6.5 6.6 5.4 5.5 5.7 5.0 P100: 0.3 0.3 0.5 0.9 1.1 1.2 1.4 1.2 1.0 0.6 0.8 0.4 S001: 4.9 3.5 1.3 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.7 3.8 S010: 2.8 1.6 0.8 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.3 2.2 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: 38.08 inches Snowfall: 22.5 inches Days precipitation at or above 0 inches (P000): 108.7 Days precipitation at or above 0.10 inches (P010): 70.2 Days Precipitation at or above 1.00 inches (P100): 9.7 Days Snowfall at or above 0.1 inches (S001): 14.3 Days Snowfall at or above 1.0 inches (S010): 7.8 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