Official 1981-2010 Climate Normals City: SMITHLAND L&D State: IL ID: 118020 Latitude: 37.1644 Longitude: -88.4311 Elevation: 356.9 ft Temperature-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High: 42.0 46.9 57.0 67.8 76.4 84.4 88.1 87.6 80.7 69.6 57.8 45.2 Mean: 33.3 37.3 46.5 56.6 65.7 74.1 78.2 77.3 69.9 58.1 47.5 36.3 Low: 24.7 27.7 36.1 45.3 55.1 63.9 68.2 67.1 59.0 46.5 37.2 27.5 CDD: 0 0 3 24 104 281 408 384 182 31 2 0 HDD: 981 776 575 278 81 6 0 1 36 246 527 888 Number of Days T090: 0.0 0.0 0.0 0.0 0.6 5.8 12.4 10.9 3.5 0.0 0.0 0.0 T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.4 0.0 0.0 0.0 0.0 T000: 0.5 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 T032: 23.4 18.4 11.2 2.5 0.0 0.0 0.0 0.0 0.0 1.8 9.6 20.5 ------------------------------------------------------------------------------------------ Annual Values High Temp: 67.0 F Mean Temp: 56.8 F Low Temp: 46.6 F Cooling DD: 1419 Heating DD: 4396 Days above 90 (T090): 33.3 Days above 100 (T100): 0.6 Days below 0 (T000): 1.2 Days below 32 (T032): 87.4 ------------------------------------------------------------------------------------------ Precipitation-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Prcp: 3.42 3.90 4.08 4.45 5.13 4.27 4.10 2.67 3.60 3.80 4.13 4.59 Snow: 1.2 1.4 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.6 Number of Days P001: 9.5 9.0 10.7 10.6 11.3 9.3 8.0 6.4 6.6 7.8 9.5 10.4 P010: 5.9 6.1 7.2 7.7 8.1 6.7 5.5 4.3 5.0 5.7 6.8 7.0 P100: 1.0 1.0 1.1 1.1 1.2 1.4 1.4 0.8 1.2 1.1 1.2 1.1 S001: 0.9 1.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 S010: 0.5 0.8 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 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: 48.14 inches Snowfall: 4.6 inches Days precipitation at or above 0 inches (P000): 109.1 Days precipitation at or above 0.10 inches (P010): 76.0 Days Precipitation at or above 1.00 inches (P100): 13.6 Days Snowfall at or above 0.1 inches (S001): 3.2 Days Snowfall at or above 1.0 inches (S010): 2.1 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