Official 1981-2010 Climate Normals

City: PETERSBURG 3SSW 
State: IL
ID: 116760
Latitude: 39.9633
Longitude: -89.8678
Elevation:  599.9 ft



Precipitation-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
Prcp:    1.81   1.61   2.49   3.70   4.22   3.81   4.15   3.35   3.28   2.96   3.20   2.49
Snow:     5.0    4.2    1.8    0.2    0.0    0.0    0.0    0.0    0.0    0.0    0.5    5.1

Number of Days
P001:     6.1    5.1    7.9    9.2   10.8    9.1    7.0    7.2    6.5    8.2    7.7    7.2
P010:     4.2    3.5    5.9    6.4    7.3    6.7    5.4    5.3    4.7    5.9    5.3    4.9
P100:     0.5    0.4    0.6    0.9    0.9    1.1    1.2    1.0    0.9    0.7    0.7    0.8
S001:     2.8    1.9    0.9    0.1    0.0    0.0    0.0    0.0    0.0    0.0    0.2    2.5
S010:     2.0    1.3    0.7    0.1    0.0    0.0    0.0    0.0    0.0    0.0    0.2    2.2
S100:     0.0    0.1    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:   37.07 inches
     Snowfall:    16.8 inches

   Days precipitation at or above 0 inches (P000):    92.0
Days precipitation at or above 0.10 inches (P010):    65.5
Days Precipitation at or above 1.00 inches (P100):     9.7
      Days Snowfall at or above 0.1 inches (S001):     8.4
      Days Snowfall at or above 1.0 inches (S010):     6.5
     Days Snowfall at or above 10.0 inches (S100):     0.2

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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