Official 1981-2010 Climate Normals
City: PETERSBURG 3SSW
State: IL
ID: 116760
Latitude: 39.9633
Longitude: -89.8678
Elevation: 599.9 ft
Precipitation-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Prcp: 1.81 1.61 2.49 3.70 4.22 3.81 4.15 3.35 3.28 2.96 3.20 2.49
Snow: 5.0 4.2 1.8 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.5 5.1
Number of Days
P001: 6.1 5.1 7.9 9.2 10.8 9.1 7.0 7.2 6.5 8.2 7.7 7.2
P010: 4.2 3.5 5.9 6.4 7.3 6.7 5.4 5.3 4.7 5.9 5.3 4.9
P100: 0.5 0.4 0.6 0.9 0.9 1.1 1.2 1.0 0.9 0.7 0.7 0.8
S001: 2.8 1.9 0.9 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.2 2.5
S010: 2.0 1.3 0.7 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.2 2.2
S100: 0.0 0.1 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: 37.07 inches
Snowfall: 16.8 inches
Days precipitation at or above 0 inches (P000): 92.0
Days precipitation at or above 0.10 inches (P010): 65.5
Days Precipitation at or above 1.00 inches (P100): 9.7
Days Snowfall at or above 0.1 inches (S001): 8.4
Days Snowfall at or above 1.0 inches (S010): 6.5
Days Snowfall at or above 10.0 inches (S100): 0.2
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City: PETERSBURG 2SW
State: IL
ID: 116765
Latitude: 39.9872
Longitude: -89.8636
Elevation: 604.8 ft
Precipitation-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Prcp: 1.81 1.72 2.28 3.51 4.39 4.09 4.41 3.43 3.30 3.21 3.20 2.39
Snow: 4.6 3.1 1.2 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.6 4.4
Number of Days
P001: 8.5 7.2 9.7 10.3 10.7 9.1 7.9 7.6 7.2 8.0 8.3 8.5
P010: 4.4 4.0 5.3 7.1 7.8 6.9 5.8 5.6 5.2 6.0 5.5 4.9
P100: 0.3 0.3 0.2 0.7 1.3 1.0 1.2 1.0 0.7 0.5 0.7 0.4
S001: 4.4 3.1 1.4 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.6 3.9
S010: 1.7 1.3 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 1.8
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: 37.74 inches
Snowfall: 14.0 inches
Days precipitation at or above 0 inches (P000): 103.0
Days precipitation at or above 0.10 inches (P010): 68.5
Days Precipitation at or above 1.00 inches (P100): 8.3
Days Snowfall at or above 0.1 inches (S001): 13.5
Days Snowfall at or above 1.0 inches (S010): 5.5
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
