Official 1981-2010 Climate Normals City: BARRINGTON 3SW State: IL ID: 110442 Latitude: 42.1153 Longitude: -88.1639 Elevation: 874.8 ft Temperature-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High: 28.2 33.2 44.0 57.4 68.1 77.5 81.5 79.3 72.2 60.0 46.6 32.5 Mean: 20.6 25.0 35.2 47.5 57.8 67.6 72.1 70.2 62.3 50.3 38.4 25.2 Low: 13.0 16.7 26.4 37.6 47.5 57.7 62.6 61.1 52.4 40.5 30.3 17.9 CDD: 0 0 0 7 32 136 228 179 62 5 0 0 HDD: 1376 1121 924 532 255 58 10 18 143 462 797 1234 Number of Days T090: 0.0 0.0 0.0 0.0 0.1 1.4 3.0 1.8 0.3 0.0 0.0 0.0 T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 T000: 5.3 3.2 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.8 T032: 29.4 25.9 22.3 7.8 0.6 0.0 0.0 0.0 0.3 6.0 16.7 26.8 ------------------------------------------------------------------------------------------ Annual Values High Temp: 56.8 F Mean Temp: 47.8 F Low Temp: 38.7 F Cooling DD: 649 Heating DD: 6929 Days above 90 (T090): 6.5 Days above 100 (T100): -777.7 Days below 0 (T000): 11.5 Days below 32 (T032): 135.9 ------------------------------------------------------------------------------------------ Precipitation-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Prcp: 1.90 1.89 2.29 3.56 4.24 3.85 3.78 4.86 3.40 3.10 3.04 2.26 Snow: 11.6 7.3 3.8 0.7 0.0 0.0 0.0 0.0 0.0 0.1 1.4 10.0 Number of Days P001: 9.0 7.6 9.8 10.6 11.4 11.1 9.1 9.9 9.0 10.0 10.7 10.6 P010: 4.9 4.5 5.1 6.6 7.4 7.3 5.8 6.5 5.8 5.8 5.6 5.7 P100: 0.3 0.2 0.3 0.9 1.0 1.0 1.3 1.5 0.8 0.6 0.6 0.3 S001: 6.0 4.8 2.8 0.4 0.0 0.0 0.0 0.0 0.0 0.1 1.3 6.3 S010: 3.3 2.7 1.5 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.5 3.5 S100: 0.2 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: 38.17 inches Snowfall: 34.9 inches Days precipitation at or above 0 inches (P000): 118.8 Days precipitation at or above 0.10 inches (P010): 71.0 Days Precipitation at or above 1.00 inches (P100): 8.8 Days Snowfall at or above 0.1 inches (S001): 21.7 Days Snowfall at or above 1.0 inches (S010): 11.8 Days Snowfall at or above 10.0 inches (S100): 0.2 ------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ 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