Avon Climate Normals

Official 1981-2010 Climate Normals

City: AVON 5 NE
State: IL
ID: 110356
Latitude: 40.7086
Longitude: -90.3628
Elevation:  639.9 ft

Temperature-Related Pseudonormals

For stations with short records, linear combinations of normals from nearby sites were used
to compute so-called pseudonormals.

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
High:    31.6   35.9   49.0   62.9   73.1   81.6   84.7   83.6   77.0   64.8   50.1   36.3
Mean:    23.0   27.1   38.2   51.0   61.5   70.9   73.9   72.6   64.7   52.9   40.4   27.9
 Low:    14.3   18.3   27.4   39.1   49.9   60.2   63.0   61.5   52.4   40.9   30.7   19.5
 CDD:       0      0      0      6     44    188    275    240     64      5      0      0
 HDD:    1303   1061    831    426    152     11      1      7     74    381    738   1150

Number of Days
T090:     0.0    0.0    0.0    0.0    0.4    1.0    4.0    1.7    0.0    0.0    0.0    0.0
T100:     0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0
T000:     4.6    0.3    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    2.7
T032:    28.5   25.6   19.6    6.7    0.0    0.0    0.0    0.0    0.0    4.7   17.5   29.0
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Annual Values

 High Temp:    61.0 F
 Mean Temp:    50.4 F
  Low Temp:    39.9 F
Cooling DD:     822
Heating DD:    6134

Days above  90 (T090):     7.1
Days above 100 (T100):     0.0
Days below   0 (T000):     7.6
Days below  32 (T032):   131.5
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Precipitation-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
Prcp:    1.64   1.54   2.61   3.63   4.34   4.20   4.38   3.64   3.52   2.89   2.71   1.98
Snow:     7.1    5.9    2.4    0.6    0.0    0.0    0.0    0.0    0.0    0.0    0.7    6.9

Number of Days
P001:     6.2    5.3    7.1    8.9   10.1    8.2    8.4    8.0    6.8    7.2    7.0    6.5
P010:     3.9    3.4    5.3    6.9    7.5    6.6    6.6    5.9    5.4    5.3    5.5    4.4
P100:     0.4    0.3    0.4    0.9    1.3    1.5    1.1    1.1    1.1    0.6    0.6    0.4
S001:     3.6    3.1    1.2    0.2    0.0    0.0    0.0    0.0    0.0    0.0    0.5    3.1
S010:     3.0    2.1    1.0    0.2    0.0    0.0    0.0    0.0    0.0    0.0    0.4    2.5
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:   37.08 inches
     Snowfall:    23.6 inches

   Days precipitation at or above 0 inches (P000):    89.7
Days precipitation at or above 0.10 inches (P010):    66.7
Days Precipitation at or above 1.00 inches (P100):     9.7
      Days Snowfall at or above 0.1 inches (S001):    11.7
      Days Snowfall at or above 1.0 inches (S010):     9.2
     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