Official 1981-2010 Climate Normals

City: PATOKA  
State: IL
ID: 116642
Latitude: 38.7642
Longitude: -89.0564
Elevation:  518.9 ft



Precipitation-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
Prcp:    2.86   2.82   3.54   3.72   5.39   4.25   3.80   3.13   3.13   3.42   3.78   3.12
Snow:     2.0    2.5    0.7    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    2.8

Number of Days
P001:     6.7    5.6    7.6    7.9    9.4    8.1    7.0    5.4    5.6    7.1    7.2    7.2
P010:     5.4    4.4    5.9    6.7    8.3    6.5    5.8    4.2    4.8    6.0    6.2    5.4
P100:     0.9    0.6    1.3    0.9    1.9    1.6    1.3    0.9    0.7    1.1    0.9    0.6
S001:     1.5    1.7    0.4    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    1.4
S010:     1.2    1.1    0.4    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    1.0
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:   42.96 inches
     Snowfall:     8.0 inches

   Days precipitation at or above 0 inches (P000):    84.8
Days precipitation at or above 0.10 inches (P010):    69.6
Days Precipitation at or above 1.00 inches (P100):    12.7
      Days Snowfall at or above 0.1 inches (S001):     5.0
      Days Snowfall at or above 1.0 inches (S010):     3.7
     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