Official 1981-2010 Climate Normals
City: MUNDELEIN 4WSW
State: IL
ID: 115961
Latitude: 42.2553
Longitude: -88.0769
Elevation: 839.7 ft
Temperature-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High: 28.8 33.2 44.3 56.9 68.2 77.8 82.1 80.3 72.9 60.4 46.4 32.5
Mean: 20.9 25.1 35.2 46.9 57.6 68.0 72.3 70.7 62.8 50.8 38.3 25.1
Low: 13.1 16.9 26.2 37.0 47.0 58.1 62.6 61.1 52.7 41.1 30.2 17.6
CDD: 0 0 0 4 32 144 236 191 65 7 0 0
HDD: 1365 1118 922 545 261 56 8 14 132 449 801 1238
Number of Days
T090: 0.0 0.0 0.0 0.0 0.4 1.6 2.9 1.6 0.3 0.0 0.0 0.0
T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
T000: 4.6 2.7 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.7
T032: 29.6 25.9 22.5 9.2 0.8 0.0 0.0 0.0 0.0 4.7 17.7 27.3
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Annual Values
High Temp: 57.1 F
Mean Temp: 47.9 F
Low Temp: 38.7 F
Cooling DD: 680
Heating DD: 6911
Days above 90 (T090): 6.8
Days above 100 (T100): 0.0
Days below 0 (T000): 10.2
Days below 32 (T032): 137.8
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Precipitation-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Prcp: 1.53 1.97 2.55 3.21 4.21 4.05 3.82 4.19 3.48 2.92 2.65 1.97
Snow: 10.9 11.0 5.5 1.3 0.0 0.0 0.0 0.0 0.0 0.0 1.0 13.5
Number of Days
P001: 9.8 9.5 10.5 11.2 12.7 12.8 9.9 9.7 8.3 10.1 9.6 11.4
P010: 4.0 4.9 5.5 7.3 8.5 7.3 5.6 5.8 5.4 5.8 4.3 5.8
P100: 0.1 0.3 0.5 0.7 1.0 1.2 1.1 1.3 0.8 0.5 0.4 0.3
S001: 8.4 7.9 4.5 0.8 0.0 0.0 0.0 0.0 0.0 0.0 1.6 9.0
S010: 3.0 3.4 1.5 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.4 4.3
S100: 0.1 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: 36.55 inches
Snowfall: 43.2 inches
Days precipitation at or above 0 inches (P000): 125.5
Days precipitation at or above 0.10 inches (P010): 70.2
Days Precipitation at or above 1.00 inches (P100): 8.2
Days Snowfall at or above 0.1 inches (S001): 32.2
Days Snowfall at or above 1.0 inches (S010): 13.1
Days Snowfall at or above 10.0 inches (S100): 0.3
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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
