Official 1981-2010 Climate Normals

City: BOURBONNAIS 3NW 
State: IL
ID: 110803
Latitude: 41.1750
Longitude: -87.9350
Elevation:  649.8 ft



Precipitation-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
Prcp:    1.93   1.71   2.76   3.65   4.38   3.95   3.94   3.20   2.98   3.01   3.28   2.54
Snow:     8.9    5.1    3.2    1.2    0.0    0.0    0.0    0.0    0.0    0.0    0.9    7.3

Number of Days
P001:    10.7    9.2   10.6   12.1   12.4   11.8   10.3   10.2    8.3    9.3   10.8   10.9
P010:     5.3    4.0    5.9    7.5    8.1    7.5    6.8    5.8    5.3    6.1    5.5    5.5
P100:     0.5    0.3    0.4    1.1    1.2    1.1    1.2    0.9    0.8    0.8    0.5    0.3
S001:     6.9    4.9    2.8    0.4    0.0    0.0    0.0    0.0    0.0    0.1    1.3    6.3
S010:     3.1    1.5    1.0    0.3    0.0    0.0    0.0    0.0    0.0    0.0    0.3    2.1
S100:     0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.1
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Annual Values

Precipitation:   37.33 inches
     Snowfall:    26.6 inches

   Days precipitation at or above 0 inches (P000):   126.6
Days precipitation at or above 0.10 inches (P010):    73.3
Days Precipitation at or above 1.00 inches (P100):     9.1
      Days Snowfall at or above 0.1 inches (S001):    22.7
      Days Snowfall at or above 1.0 inches (S010):     8.3
     Days Snowfall at or above 10.0 inches (S100):     0.1

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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