Marion Climate Normals

Official 1981-2010 Climate Normals

City: MARION 4 NNE
State: IL
ID: 115342
Latitude: 37.7747
Longitude: -88.8981
Elevation:  476.9 ft

Temperature-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
High:    38.4   43.7   53.8   65.6   74.5   81.6   85.9   85.4   78.5   66.7   54.6   41.4
Mean:    29.8   34.1   43.4   54.1   63.6   71.7   75.8   74.4   66.7   55.1   44.6   32.9
 Low:    21.2   24.5   33.1   42.6   52.7   61.7   65.7   63.5   55.0   43.6   34.7   24.4
 CDD:       0      0      2     17     76    217    336    297    127     20      2      0
 HDD:    1091    865    670    344    120     18      1      4     75    326    613    995

Number of Days
T090:     0.0    0.0    0.0    0.0    0.2    1.7    7.4    7.2    1.7    0.0    0.0    0.0
T100:     0.0    0.0    0.0    0.0    0.0    0.0    0.1    0.4    0.0    0.0    0.0    0.0
T000:     1.4    0.7    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.9
T032:    26.0   21.2   15.7    4.4    0.0    0.0    0.0    0.0    0.0    4.1   13.1   23.2
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Annual Values

 High Temp:    64.3 F
 Mean Temp:    54.0 F
  Low Temp:    43.6 F
Cooling DD:    1095
Heating DD:    5121

Days above  90 (T090):    18.2
Days above 100 (T100):     0.5
Days below   0 (T000):     3.1
Days below  32 (T032):   107.7
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Precipitation-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
Prcp:    3.26   3.30   4.36   4.99   5.95   4.36   4.26   2.87   2.82   3.72   4.62   4.03
Snow:     4.2    5.1    1.5    0.1    0.0    0.0    0.0    0.0    0.0    0.4    0.1    3.0

Number of Days
P001:     8.5    8.1   11.2   10.6   10.8    9.6    8.1    7.0    7.4    8.2    9.6    9.3
P010:     5.6    6.0    7.3    7.6    8.0    6.7    5.6    5.0    5.2    6.2    7.1    6.8
P100:     0.5    0.6    1.0    0.8    1.9    1.4    1.4    0.8    1.3    0.6    1.5    1.1
S001:     2.5    1.9    0.8    0.2    0.0    0.0    0.0    0.0    0.0    0.1    0.1    1.8
S010:     1.3    1.3    0.5    0.1    0.0    0.0    0.0    0.0    0.0    0.1    0.1    1.0
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:   48.54 inches
     Snowfall:    14.4 inches

   Days precipitation at or above 0 inches (P000):   108.4
Days precipitation at or above 0.10 inches (P010):    77.1
Days Precipitation at or above 1.00 inches (P100):    12.9
      Days Snowfall at or above 0.1 inches (S001):     7.4
      Days Snowfall at or above 1.0 inches (S010):     4.4
     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