Official 1981-2010 Climate Normals City: SPRINGFIELD #2 State: IL ID: 118186 Latitude: 39.8361 Longitude: -89.6250 Elevation: 589.7 ft Temperature-Related Pseudonormals For stations with short records, linear combinations of normals from nearby sites were used to compute so-called pseudonormals. Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High: 35.3 40.5 51.9 64.4 73.9 82.7 85.9 84.7 77.9 66.3 53.0 39.2 Mean: 27.0 30.8 41.3 53.3 63.4 72.9 76.2 74.4 66.3 55.1 43.1 30.7 Low: 18.6 21.0 30.7 42.2 52.9 63.1 66.5 64.0 54.7 43.9 33.1 22.2 CDD: 0 0 2 14 72 245 347 295 109 23 1 0 HDD: 1179 958 737 365 121 9 0 6 70 329 659 1062 Number of Days T090: 0.0 0.0 0.0 0.0 0.4 3.3 7.3 6.5 1.7 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: 2.7 0.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.7 T032: 26.8 24.5 18.6 3.3 0.6 0.0 0.0 0.0 0.0 2.4 15.8 26.1 ------------------------------------------------------------------------------------------ Annual Values High Temp: 63.1 F Mean Temp: 53.0 F Low Temp: 42.8 F Cooling DD: 1108 Heating DD: 5497 Days above 90 (T090): 19.2 Days above 100 (T100): 0.0 Days below 0 (T000): 4.1 Days below 32 (T032): 118.2 ------------------------------------------------------------------------------------------ Precipitation-Related Pseudonormals For stations with short records, linear combinations of normals from nearby sites were used to compute so-called pseudonormals. Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Prcp: 2.00 1.91 2.75 3.63 4.73 4.57 4.32 3.24 3.28 3.19 3.52 2.54 ------------------------------------------------------------------------------------------ Annual Values Precipitation: 39.68 inches ------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ 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