Official 1981-2010 Climate Normals

City: MT STERLING 
State: IL
ID: 115935
Latitude: 39.9842
Longitude: -90.7525
Elevation:  708.8 ft



Precipitation-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
Prcp:    1.68   1.98   2.59   3.88   4.79   4.38   4.01   3.59   3.40   3.35   3.07   2.39
Snow:     5.6    3.6    1.3    0.2    0.0    0.0    0.0    0.0    0.0    0.0    0.5    3.7

Number of Days
P001:     5.1    4.6    6.5    8.9    8.8    8.3    7.4    6.7    6.3    6.9    7.1    5.8
P010:     3.7    3.5    4.7    7.1    7.4    6.5    6.1    5.4    5.3    5.7    5.4    4.5
P100:     0.4    0.4    0.6    1.0    1.4    1.3    1.1    1.1    1.0    0.8    0.7    0.7
S001:     2.3    1.9    0.6    0.1    0.0    0.0    0.0    0.0    0.0    0.0    0.3    2.2
S010:     2.1    1.6    0.5    0.1    0.0    0.0    0.0    0.0    0.0    0.0    0.1    1.9
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:   39.11 inches
     Snowfall:    14.9 inches

   Days precipitation at or above 0 inches (P000):    82.4
Days precipitation at or above 0.10 inches (P010):    65.3
Days Precipitation at or above 1.00 inches (P100):    10.5
      Days Snowfall at or above 0.1 inches (S001):     7.4
      Days Snowfall at or above 1.0 inches (S010):     6.3
     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