Official 1981-2010 Climate Normals

City: GEBHARD WOODS SP
State: IL
ID: 113369
Latitude: 41.3500
Longitude: -88.4333
Elevation:  504.8 ft

Temperature-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
High:    31.5   35.7   48.6   61.9   73.6   82.2   84.6   82.9   76.4   63.7   50.1   35.6
Mean:    23.2   26.7   38.7   50.5   61.6   70.5   73.7   72.3   64.3   52.3   40.9   27.7
 Low:    14.9   17.7   28.7   39.2   49.7   58.9   62.9   61.8   52.1   40.8   31.7   19.8
 CDD:       0      0      1      8     62    193    275    238     90      8      0      0
 HDD:    1295   1072    818    442    166     27      4     11    113    403    723   1156

Number of Days
T090:     0.0    0.0    0.0    0.1    1.0    3.0    6.4    4.1    1.5    0.0    0.0    0.0
T100:     0.0    0.0    0.0    0.0    0.0    0.1    0.4    0.1    0.0    0.0    0.0    0.0
T000:     5.0    2.7    0.1    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    2.6
T032:    28.2   25.2   20.6    5.5    0.3    0.0    0.0    0.0    0.2    5.3   15.7   26.6
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Annual Values

 High Temp:    60.7 F
 Mean Temp:    50.3 F
  Low Temp:    40.0 F
Cooling DD:     875
Heating DD:    6229

Days above  90 (T090):    16.2
Days above 100 (T100):     0.6
Days below   0 (T000):    10.4
Days below  32 (T032):   127.7
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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