Official 1981-2010 Climate Normals

City: HAMMOND  
State: IL
ID: 113774
Latitude: 39.8014
Longitude: -88.5928
Elevation:  659.9 ft



Precipitation-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
Prcp:    1.84   2.01   2.46   3.91   4.61   4.79   4.48   3.18   2.98   3.26   3.80   2.75
Snow:     3.7    1.3    0.3    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.2    1.2

Number of Days
P001:     7.9    6.9    8.9   10.0   11.7    9.4    7.9    7.4    6.3    7.5    8.8    8.3
P010:     4.5    4.3    5.8    7.6    8.8    7.6    6.2    5.7    4.5    5.4    6.3    4.9
P100:     0.3    0.4    0.3    0.9    1.2    1.6    1.5    1.0    0.9    0.8    1.0    0.3
S001:     1.9    0.9    0.3    0.1    0.0    0.0    0.0    0.0    0.0    0.0    0.2    1.5
S010:     0.8    0.3    0.1    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.1    0.4
S100:     0.1    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:   40.07 inches
     Snowfall:     6.7 inches

   Days precipitation at or above 0 inches (P000):   101.0
Days precipitation at or above 0.10 inches (P010):    71.6
Days Precipitation at or above 1.00 inches (P100):    10.2
      Days Snowfall at or above 0.1 inches (S001):     4.9
      Days Snowfall at or above 1.0 inches (S010):     1.7
     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