Official 1981-2010 Climate Normals City: SHABBONA 5 NNE State: IL ID: 054811 Latitude: 41.8431 Longitude: -88.8514 Elevation: 860.7 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: 27.7 32.5 44.9 58.7 69.7 79.2 81.9 80.0 73.9 62.0 46.5 31.9 Mean: 19.9 24.6 35.8 47.8 58.6 68.4 71.2 69.3 61.7 50.4 37.5 24.3 Low: 12.1 16.6 26.7 36.8 47.5 57.5 60.5 58.6 49.5 38.8 28.5 16.7 CDD: 0 0 0 0 28 138 200 155 44 8 0 0 HDD: 1398 1132 905 518 227 38 8 22 144 461 825 1261 Number of Days T090: 0.0 0.0 0.0 0.0 0.3 1.6 1.4 0.9 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: 5.9 2.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.1 T032: 29.7 26.6 23.5 10.0 0.9 0.0 0.0 0.0 0.1 6.5 19.3 28.0 ------------------------------------------------------------------------------------------ Annual Values High Temp: 57.5 F Mean Temp: 47.5 F Low Temp: 37.6 F Cooling DD: 574 Heating DD: 6939 Days above 90 (T090): 4.5 Days above 100 (T100): 0.0 Days below 0 (T000): 11.9 Days below 32 (T032): 144.5 ------------------------------------------------------------------------------------------ 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: 1.58 1.56 2.19 3.31 4.04 4.47 4.15 4.49 3.33 2.82 2.76 2.21 ------------------------------------------------------------------------------------------ Annual Values Precipitation: 36.91 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