Official 1981-2010 Climate Normals
City: GALVA
State: IL
ID: 113335
Latitude: 41.1739
Longitude: -90.0350
Elevation: 809.8 ft
Temperature-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High: 30.1 35.2 48.1 61.7 72.4 81.6 84.6 82.7 76.0 63.6 48.4 34.0
Mean: 21.3 26.0 37.6 49.7 60.8 70.1 73.5 71.4 63.6 51.7 38.7 25.2
Low: 12.5 16.9 27.2 37.8 49.2 58.7 62.5 60.1 51.2 39.7 29.1 16.3
CDD: 0 0 1 9 53 182 271 212 81 9 0 0
HDD: 1355 1090 848 467 183 28 6 13 124 422 788 1235
Number of Days
T090: 0.0 0.0 0.0 0.0 0.5 3.3 6.0 4.3 1.3 0.0 0.0 0.0
T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.2 0.0 0.0 0.0 0.0
T000: 6.1 3.3 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.1
T032: 29.8 25.8 21.8 8.0 0.6 0.0 0.0 0.0 0.3 6.5 18.7 28.5
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Annual Values
High Temp: 60.0 F
Mean Temp: 49.3 F
Low Temp: 38.5 F
Cooling DD: 817
Heating DD: 6559
Days above 90 (T090): 15.4
Days above 100 (T100): 0.3
Days below 0 (T000): 13.7
Days below 32 (T032): 140.0
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Precipitation-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Prcp: 1.54 1.64 2.63 4.11 3.98 4.32 3.84 4.22 3.41 2.83 3.03 2.23
Snow: 7.0 5.2 2.4 0.7 0.0 0.0 0.0 0.0 0.0 0.0 1.3 4.0
Number of Days
P001: 5.2 5.5 8.7 10.2 10.1 9.9 8.4 8.8 7.7 8.5 8.6 7.2
P010: 3.4 3.8 5.9 7.2 7.0 7.2 6.4 6.1 5.5 5.7 5.9 4.5
P100: 0.3 0.3 0.6 1.0 0.9 1.5 1.0 1.6 1.0 0.7 0.6 0.4
S001: 3.0 2.4 1.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.7 3.0
S010: 2.2 1.7 0.7 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.4 2.0
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
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Annual Values
Precipitation: 37.78 inches
Snowfall: 20.6 inches
Days precipitation at or above 0 inches (P000): 98.8
Days precipitation at or above 0.10 inches (P010): 68.6
Days Precipitation at or above 1.00 inches (P100): 9.9
Days Snowfall at or above 0.1 inches (S001): 10.4
Days Snowfall at or above 1.0 inches (S010): 7.1
Days Snowfall at or above 10.0 inches (S100): 0.0
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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
