Official 1981-2010 Climate Normals
City: GENESEO
State: IL
ID: 113384
Latitude: 41.4511
Longitude: -90.1486
Elevation: 638.9 ft
Temperature-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High: 30.5 35.3 48.2 62.1 73.0 82.3 85.4 83.0 76.0 63.3 48.4 33.9
Mean: 22.7 27.3 38.9 51.3 62.2 71.8 75.3 73.1 65.1 53.0 39.9 26.4
Low: 14.9 19.3 29.5 40.5 51.4 61.3 65.3 63.1 54.2 42.7 31.3 18.9
CDD: 0 0 1 13 66 222 322 256 101 13 0 0
HDD: 1311 1056 812 424 153 18 2 7 98 385 755 1197
Number of Days
T090: 0.0 0.0 0.0 0.1 0.8 4.6 7.3 4.5 1.4 0.1 0.0 0.0
T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.2 0.0 0.0 0.0 0.0
T000: 4.4 2.5 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.3
T032: 29.0 24.5 19.8 4.9 0.2 0.0 0.0 0.0 0.1 3.3 15.8 27.1
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Annual Values
High Temp: 60.2 F
Mean Temp: 50.7 F
Low Temp: 41.1 F
Cooling DD: 995
Heating DD: 6216
Days above 90 (T090): 18.8
Days above 100 (T100): 0.5
Days below 0 (T000): 9.2
Days below 32 (T032): 124.7
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Precipitation-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Prcp: 1.42 1.62 2.69 3.66 4.20 4.06 4.05 4.41 3.35 3.38 2.80 2.17
Snow: 8.0 4.9 2.4 0.8 0.0 0.0 0.0 0.0 0.0 0.0 0.9 8.2
Number of Days
P001: 7.6 6.7 9.0 9.9 10.7 9.9 9.1 9.0 7.5 8.5 9.3 8.2
P010: 4.3 3.8 5.3 6.8 7.6 6.9 6.3 6.6 5.1 5.6 5.9 5.2
P100: 0.2 0.3 0.7 0.9 1.2 1.2 1.2 1.3 0.8 0.9 0.6 0.3
S001: 4.4 3.0 1.4 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.8 3.9
S010: 2.5 2.0 1.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.5 2.7
S100: 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1
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Annual Values
Precipitation: 37.81 inches
Snowfall: 25.2 inches
Days precipitation at or above 0 inches (P000): 105.4
Days precipitation at or above 0.10 inches (P010): 69.4
Days Precipitation at or above 1.00 inches (P100): 9.6
Days Snowfall at or above 0.1 inches (S001): 13.8
Days Snowfall at or above 1.0 inches (S010): 8.9
Days Snowfall at or above 10.0 inches (S100): 0.2
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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
