Aledo Climate Normals

Official 1981-2010 Climate Normals

City: ALEDO  
State: IL
ID: 110072
Latitude: 41.1961
Longitude: -90.7478
Elevation:  720.0 ft

Temperature-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
High:    29.9   34.5   47.6   61.5   71.5   80.6   83.9   82.1   75.3   63.0   48.1   33.4
Mean:    21.5   25.7   37.3   49.6   60.2   70.0   73.4   71.7   63.8   51.8   38.8   25.5
 Low:    13.0   16.8   26.9   37.8   48.8   59.4   62.9   61.2   52.3   40.6   29.4   17.5
 CDD:       0      0      0      7     44    178    264    217     80      8      0      0
 HDD:    1350   1102    861    468    195     28      4     11    117    417    788   1226

Number of Days
T090:     0.0    0.0    0.0    0.0    0.2    2.0    5.2    3.4    0.9    0.0    0.0    0.0
T100:     0.0    0.0    0.0    0.0    0.0    0.0    0.1    0.1    0.0    0.0    0.0    0.0
T000:     5.9    3.0    0.2    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    3.1
T032:    29.6   25.7   22.0    7.7    0.4    0.0    0.0    0.0    0.2    5.9   18.4   28.4
------------------------------------------------------------------------------------------
Annual Values

 High Temp:    59.4 F
 Mean Temp:    49.2 F
  Low Temp:    39.0 F
Cooling DD:     800
Heating DD:    6565

Days above  90 (T090):    11.7
Days above 100 (T100):     0.3
Days below   0 (T000):    12.2
Days below  32 (T032):   138.4
------------------------------------------------------------------------------------------


Precipitation-Related Normals

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
Prcp:    1.41   1.54   2.46   3.75   4.36   4.82   3.94   4.11   3.43   3.02   2.36   2.09

Number of Days
P001:     5.5    5.6    7.3    9.0   10.1    8.8    7.5    7.9    6.1    7.3    6.6    6.1
P010:     3.7    4.1    5.5    7.4    8.5    7.3    6.4    6.7    5.0    5.7    5.1    4.6
P100:     0.2    0.2    0.6    1.0    1.3    1.4    1.1    1.5    0.8    0.8    0.3    0.4
------------------------------------------------------------------------------------------
Annual Values

Precipitation:   37.29 inches

   Days precipitation at or above 0 inches (P000):    87.8
Days precipitation at or above 0.10 inches (P010):    70.0
Days Precipitation at or above 1.00 inches (P100):     9.6

------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------
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