Athens Climate Normals

Official 1981-2010 Climate Normals

City: ATHENS 2SW 
State: IL
ID: 110306
Latitude: 39.9467
Longitude: -89.7597
Elevation:  589.7 ft

Temperature-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
High:    34.4   39.5   51.4   64.2   73.6   81.6   83.4   83.5   77.2   65.1   52.7   38.1
Mean:    26.1   30.3   40.8   52.7   62.4   71.2   73.8   73.0   65.2   53.8   43.1   29.7
 Low:    17.7   21.1   30.3   41.2   51.3   60.9   64.3   62.4   53.2   42.5   33.5   21.2
 CDD:       0      0      1     12     68    206    276    253     94     14      1      0
 HDD:    1207    971    750    382    147     18      2      7     88    361    658   1095

Number of Days
T090:     0.0    0.0    0.0    0.1    0.5    2.3    3.7    4.5    1.2    0.0    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:     2.3    0.8    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    1.3
T032:    28.0   24.2   18.9    4.7    0.5    0.0    0.0    0.0    0.0    4.3   13.5   26.1
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Annual Values

 High Temp:    62.2 F
 Mean Temp:    51.9 F
  Low Temp:    41.7 F
Cooling DD:     925
Heating DD:    5687

Days above  90 (T090):    12.3
Days above 100 (T100):     0.1
Days below   0 (T000):     4.5
Days below  32 (T032):   120.2
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Precipitation-Related Pseudonormals

For stations with short records, linear combinations of normals from nearby sites were used
to compute so-called pseudonormals.

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
Prcp:    1.92   1.95   2.61   3.76   4.39   4.22   4.17   3.48   3.09   3.06   3.37   2.62
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Annual Values

Precipitation:   38.64 inches

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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