New Boston Dam Climate Normals

Official 1981-2010 Climate Normals

City: NEW BOSTON DAM
State: IL
ID: 116080
Latitude: 41.1922
Longitude: -91.0578
Elevation:  547.8 ft

Temperature-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
High:    30.6   36.4   48.7   62.4   72.8   82.5   86.2   84.0   76.8   63.8   49.6   35.3
Mean:    22.7   27.7   39.1   51.5   62.2   71.9   75.9   73.5   65.4   53.4   40.5   27.7
 Low:    14.8   19.1   29.5   40.7   51.6   61.4   65.5   63.0   54.0   43.0   31.3   20.1
 CDD:       0      0      0      7     64    227    337    268     95     14      0      0
 HDD:    1311   1043    803    410    151     18      1      4     83    374    737   1156

Number of Days
T090:     0.0    0.0    0.0    0.0    0.6    4.2    8.2    4.7    0.9    0.2    0.0    0.0
T100:     0.0    0.0    0.0    0.0    0.0    0.0    0.1    0.0    0.0    0.0    0.0    0.0
T000:     4.6    2.0    0.1    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    1.8
T032:    29.1   24.4   19.9    5.1    0.3    0.1    0.0    0.0    0.0    3.3   16.2   26.2
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Annual Values

 High Temp:    60.9 F
 Mean Temp:    51.1 F
  Low Temp:    41.3 F
Cooling DD:    1012
Heating DD:    6091

Days above  90 (T090):    18.8
Days above 100 (T100):     0.1
Days below   0 (T000):     8.5
Days below  32 (T032):   124.6
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Precipitation-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
Prcp:    1.21   1.55   2.63   3.24   4.54   4.10   3.49   3.89   3.32   2.91   2.32   1.82

Number of Days
P001:     6.8    7.1    8.8    9.5   10.9    9.3    7.8    8.6    7.2    7.8    8.3    8.1
P010:     3.8    3.8    5.1    7.0    7.8    6.9    5.7    6.3    4.7    5.3    5.0    4.6
P100:     0.1    0.3    0.5    0.8    1.1    1.2    1.0    1.0    0.9    0.9    0.3    0.2
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Annual Values

Precipitation:   35.02 inches

   Days precipitation at or above 0 inches (P000):   100.2
Days precipitation at or above 0.10 inches (P010):    66.0
Days Precipitation at or above 1.00 inches (P100):     8.3

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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