Official 1981-2010 Climate Normals
City: MORRIS 1 NW
State: IL
ID: 115825
Latitude: 41.3708
Longitude: -88.4336
Elevation: 523.8 ft
Temperature-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High: 31.0 36.1 47.8 61.3 71.6 81.5 84.5 82.4 76.6 64.6 49.6 35.4
Mean: 23.2 27.8 38.3 50.7 61.1 71.0 74.5 72.6 65.4 53.6 41.2 27.7
Low: 15.4 19.5 28.9 40.1 50.5 60.5 64.4 62.8 54.2 42.5 32.8 20.0
CDD: 0 0 1 10 62 208 296 241 102 16 1 0
HDD: 1295 1041 827 439 184 29 3 6 90 371 715 1156
Number of Days
T090: 0.0 0.0 0.0 0.0 0.7 4.8 5.4 2.6 1.2 0.2 0.0 0.0
T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0
T000: 4.3 1.7 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.1
T032: 28.4 24.6 20.3 5.9 0.4 0.0 0.0 0.0 0.1 3.6 14.2 27.2
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Annual Values
High Temp: 60.3 F
Mean Temp: 50.7 F
Low Temp: 41.1 F
Cooling DD: 937
Heating DD: 6156
Days above 90 (T090): 14.9
Days above 100 (T100): 0.1
Days below 0 (T000): 7.2
Days below 32 (T032): 124.7
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Precipitation-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Prcp: 1.82 1.67 2.26 3.12 3.96 4.40 5.13 3.95 3.34 3.06 2.96 2.24
Snow: 8.0 5.4 2.9 0.4 0.0 0.0 0.0 0.0 0.0 0.0 1.0 6.3
Number of Days
P001: 10.0 7.8 8.9 9.9 12.2 10.9 9.0 9.6 7.1 9.3 7.7 9.7
P010: 5.1 3.6 5.4 6.8 7.9 6.8 6.6 6.1 4.4 5.5 4.8 4.9
P100: 0.4 0.3 0.5 0.4 0.9 1.5 1.6 1.5 1.0 0.6 0.4 0.5
S001: 5.9 3.6 1.7 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.9 4.8
S010: 3.5 1.7 0.8 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.4 2.4
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: 37.91 inches
Snowfall: 24.0 inches
Days precipitation at or above 0 inches (P000): 112.1
Days precipitation at or above 0.10 inches (P010): 67.9
Days Precipitation at or above 1.00 inches (P100): 9.6
Days Snowfall at or above 0.1 inches (S001): 17.3
Days Snowfall at or above 1.0 inches (S010): 9.0
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
