Official 1981-2010 Climate Normals
City: DU QUOIN 4
State: IL
ID: 112483
Latitude: 37.9878
Longitude: -89.1931
Elevation: 419.8 ft
Temperature-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High: 40.9 46.1 56.8 67.9 76.7 85.1 88.2 87.7 80.6 69.7 56.6 43.6
Mean: 32.4 36.9 46.5 57.0 66.2 74.7 77.9 76.4 68.6 57.7 46.5 35.1
Low: 23.9 27.7 36.2 46.1 55.6 64.3 67.6 65.1 56.5 45.8 36.4 26.7
CDD: 0 0 4 30 113 296 400 355 156 29 3 0
HDD: 1010 787 577 270 77 5 0 1 50 254 558 925
Number of Days
T090: 0.0 0.0 0.0 0.0 0.7 7.1 12.0 10.7 3.4 0.1 0.0 0.0
T100: 0.0 0.0 0.0 0.0 0.0 0.1 0.3 0.4 0.0 0.0 0.0 0.0
T000: 0.9 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6
T032: 23.9 18.4 11.0 2.0 0.0 0.0 0.0 0.0 0.1 2.5 10.9 21.6
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Annual Values
High Temp: 66.8 F
Mean Temp: 56.4 F
Low Temp: 46.1 F
Cooling DD: 1386
Heating DD: 4515
Days above 90 (T090): 34.1
Days above 100 (T100): 0.9
Days below 0 (T000): 1.9
Days below 32 (T032): 90.4
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Precipitation-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Prcp: 2.92 2.74 4.16 4.26 5.71 4.51 3.86 3.14 3.36 3.86 4.23 3.55
Snow: 3.7 3.7 0.8 0.2 0.0 0.0 0.0 0.0 0.0 0.2 0.2 3.6
Number of Days
P001: 7.2 6.7 9.2 9.9 10.4 8.7 7.3 7.0 6.6 7.5 8.4 8.1
P010: 5.4 5.2 7.2 7.9 7.9 6.8 5.6 5.5 5.2 6.2 6.6 6.3
P100: 0.8 0.6 0.9 1.0 2.0 1.1 1.1 1.0 1.0 1.0 1.2 0.8
S001: 2.1 1.9 0.4 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.1 1.5
S010: 1.6 1.6 0.3 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.1 1.2
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: 46.30 inches
Snowfall: 12.4 inches
Days precipitation at or above 0 inches (P000): 97.0
Days precipitation at or above 0.10 inches (P010): 75.8
Days Precipitation at or above 1.00 inches (P100): 12.5
Days Snowfall at or above 0.1 inches (S001): 6.2
Days Snowfall at or above 1.0 inches (S010): 5.0
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
