Official 1981-2010 Climate Normals
City: CHILLICOTHE
State: IL
ID: 111627
Latitude: 40.9153
Longitude: -89.5031
Elevation: 535.0 ft
Precipitation-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Prcp: 1.86 1.72 2.77 3.47 4.53 3.86 3.24 3.82 3.30 2.72 3.12 2.24
Snow: 6.3 4.7 2.1 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.4 5.4
Number of Days
P001: 6.9 5.9 7.6 9.1 10.2 9.4 7.6 8.1 6.7 7.5 7.7 7.4
P010: 4.4 3.8 5.3 6.8 7.4 6.2 5.7 6.5 4.9 5.6 5.9 4.9
P100: 0.3 0.3 0.6 0.8 1.2 0.8 1.0 1.1 0.9 0.5 0.8 0.5
S001: 3.6 2.8 1.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.3 3.0
S010: 2.6 1.9 0.8 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.2 2.3
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: 36.65 inches
Snowfall: 19.5 inches
Days precipitation at or above 0 inches (P000): 94.1
Days precipitation at or above 0.10 inches (P010): 67.4
Days Precipitation at or above 1.00 inches (P100): 8.8
Days Snowfall at or above 0.1 inches (S001): 10.8
Days Snowfall at or above 1.0 inches (S010): 7.9
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
