Official 1981-2010 Climate Normals

City: MORTON  
State: IL
ID: 115876
Latitude: 40.6006
Longitude: -89.4653
Elevation:  720.0 ft



Precipitation-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
Prcp:    1.97   1.88   2.90   4.01   5.06   3.93   3.89   3.39   2.87   3.03   3.26   2.43
Snow:     7.1    4.5    2.6    0.7    0.0    0.0    0.0    0.0    0.0    0.0    0.7    8.0

Number of Days
P001:     9.1    8.0    9.9   10.6   11.8   11.7    7.9    9.3    7.2    9.2    8.4   10.2
P010:     4.5    4.6    6.3    7.4    8.8    8.4    5.9    6.3    5.6    6.1    5.2    5.8
P100:     0.6    0.3    0.4    1.0    1.2    1.1    1.0    0.6    0.6    0.5    0.8    0.4
S001:     6.0    4.6    1.9    0.3    0.0    0.0    0.0    0.0    0.0    0.0    0.6    6.0
S010:     2.3    2.2    0.8    0.1    0.0    0.0    0.0    0.0    0.0    0.0    0.2    2.4
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:   38.62 inches
     Snowfall:    23.6 inches

   Days precipitation at or above 0 inches (P000):   113.3
Days precipitation at or above 0.10 inches (P010):    74.9
Days Precipitation at or above 1.00 inches (P100):     8.5
      Days Snowfall at or above 0.1 inches (S001):    19.4
      Days Snowfall at or above 1.0 inches (S010):     8.0
     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