Official 1981-2010 Climate Normals City: HAMMOND State: IL ID: 113774 Latitude: 39.8014 Longitude: -88.5928 Elevation: 659.9 ft Precipitation-Related Normals Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Prcp: 1.84 2.01 2.46 3.91 4.61 4.79 4.48 3.18 2.98 3.26 3.80 2.75 Snow: 3.7 1.3 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 1.2 Number of Days P001: 7.9 6.9 8.9 10.0 11.7 9.4 7.9 7.4 6.3 7.5 8.8 8.3 P010: 4.5 4.3 5.8 7.6 8.8 7.6 6.2 5.7 4.5 5.4 6.3 4.9 P100: 0.3 0.4 0.3 0.9 1.2 1.6 1.5 1.0 0.9 0.8 1.0 0.3 S001: 1.9 0.9 0.3 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.2 1.5 S010: 0.8 0.3 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.4 S100: 0.1 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: 40.07 inches Snowfall: 6.7 inches Days precipitation at or above 0 inches (P000): 101.0 Days precipitation at or above 0.10 inches (P010): 71.6 Days Precipitation at or above 1.00 inches (P100): 10.2 Days Snowfall at or above 0.1 inches (S001): 4.9 Days Snowfall at or above 1.0 inches (S010): 1.7 Days Snowfall at or above 10.0 inches (S100): 0.1 ------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ 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