Official 1981-2010 Climate Normals

City: GREENVILLE  
State: IL
ID: 113693
Latitude: 38.8664
Longitude: -89.4050
Elevation:  540.9 ft



Precipitation-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
Prcp:    2.29   2.27   3.23   3.63   4.74   3.70   3.91   2.79   2.82   3.50   3.97   2.68
Snow:     4.4    4.8    1.6    0.2    0.0    0.0    0.0    0.0    0.0    0.0    0.2    2.6

Number of Days
P001:     5.8    5.8    7.8    8.6    9.0    7.8    6.9    6.2    5.3    7.0    8.5    6.4
P010:     4.1    3.9    6.0    6.9    7.1    6.5    5.9    5.0    4.1    5.6    7.0    4.9
P100:     0.7    0.6    0.6    0.8    1.2    1.0    1.1    0.7    0.9    1.0    0.9    0.8
S001:     1.8    1.7    0.8    0.2    0.0    0.0    0.0    0.0    0.0    0.0    0.1    1.3
S010:     1.2    1.5    0.6    0.2    0.0    0.0    0.0    0.0    0.0    0.0    0.1    0.9
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:   39.53 inches
     Snowfall:    13.8 inches

   Days precipitation at or above 0 inches (P000):    85.1
Days precipitation at or above 0.10 inches (P010):    67.0
Days Precipitation at or above 1.00 inches (P100):    10.3
      Days Snowfall at or above 0.1 inches (S001):     5.9
      Days Snowfall at or above 1.0 inches (S010):     4.5
     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