Polo Climate Normals

Official 1981-2010 Climate Normals

City: POLO 5 NW
State: IL
ID: 116897
Latitude: 42.0347
Longitude: -89.6119
Elevation:  855.8 ft

Temperature-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
High:    30.5   35.1   48.2   62.0   72.9   82.4   84.7   82.9   76.7   64.1   48.4   33.9
Mean:    21.7   25.8   37.5   49.7   60.4   70.1   73.1   70.9   63.7   51.6   38.7   25.5
 Low:    12.9   16.5   26.8   37.4   47.9   57.8   61.6   59.0   50.7   39.2   28.9   17.1
 CDD:       0      0      0      5     49    181    256    196     74     10      0      0
 HDD:    1342   1097    853    464    191     29      3     11    113    424    791   1224

Number of Days
T090:     0.0    0.0    0.0    0.0    0.9    4.6    4.7    2.8    0.9    0.1    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:     6.0    2.8    0.2    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.1    3.4
T032:    29.6   26.0   22.3    8.7    1.1    0.0    0.0    0.0    0.4    7.2   18.2   27.7
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Annual Values

 High Temp:    60.3 F
 Mean Temp:    49.2 F
  Low Temp:    38.1 F
Cooling DD:     771
Heating DD:    6543

Days above  90 (T090):    13.9
Days above 100 (T100):     0.0
Days below   0 (T000):    12.5
Days below  32 (T032):   141.2
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Precipitation-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
Prcp:    1.73   1.75   2.81   3.51   4.24   4.70   4.29   4.47   3.26   3.11   2.98   2.41

Number of Days
P001:    10.6    8.4   10.6   11.1   12.6   11.4   10.1   10.1    8.4    9.3    9.7   10.8
P010:     5.4    5.0    5.8    7.7    7.3    7.5    6.8    6.1    5.3    5.5    4.9    5.8
P100:     0.2    0.3    0.7    0.7    1.4    1.5    1.2    1.4    0.9    0.8    0.3    0.3
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Annual Values

Precipitation:   39.26 inches

   Days precipitation at or above 0 inches (P000):   123.1
Days precipitation at or above 0.10 inches (P010):    73.1
Days Precipitation at or above 1.00 inches (P100):     9.7

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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