Official 1981-2010 Climate Normals
City: PALESTINE
State: IL
ID: 116558
Latitude: 39.0028
Longitude: -87.6225
Elevation: 459.9 ft
Temperature-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High: 37.9 43.1 54.7 66.3 75.7 84.1 86.7 85.9 79.9 68.0 53.9 40.8
Mean: 30.3 34.4 44.7 55.1 65.0 73.7 76.4 75.0 67.4 56.4 44.8 33.3
Low: 22.7 25.8 34.7 43.9 54.3 63.4 66.1 64.0 54.9 44.8 35.7 25.7
CDD: 0 0 2 20 98 271 354 310 134 21 1 0
HDD: 1075 855 632 317 98 8 1 2 62 288 607 984
Number of Days
T090: 0.0 0.0 0.0 0.1 0.9 5.2 8.3 7.7 2.9 0.1 0.0 0.0
T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.2 0.0 0.0 0.0 0.0
T000: 1.6 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0
T032: 24.0 20.6 13.6 3.0 0.0 0.0 0.0 0.0 0.2 3.4 11.8 22.0
------------------------------------------------------------------------------------------
Annual Values
High Temp: 64.8 F
Mean Temp: 54.8 F
Low Temp: 44.8 F
Cooling DD: 1212
Heating DD: 4929
Days above 90 (T090): 25.1
Days above 100 (T100): 0.4
Days below 0 (T000): 3.1
Days below 32 (T032): 98.6
------------------------------------------------------------------------------------------
Precipitation-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Prcp: 3.09 2.56 3.66 4.36 5.04 4.09 3.90 3.50 3.38 3.47 3.91 3.29
Snow: 4.1 3.2 1.2 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.4 4.3
Number of Days
P001: 8.9 7.6 9.4 10.7 10.7 9.3 8.5 7.2 6.5 7.6 8.9 9.9
P010: 5.5 4.7 6.7 8.3 7.9 6.7 6.6 5.2 4.6 5.2 6.5 6.1
P100: 0.7 0.4 0.8 0.9 1.6 1.2 1.1 1.2 1.0 1.0 1.0 0.7
S001: 3.1 2.3 0.6 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.3 2.3
S010: 2.1 1.2 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 1.6
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
------------------------------------------------------------------------------------------
Annual Values
Precipitation: 44.25 inches
Snowfall: 13.4 inches
Days precipitation at or above 0 inches (P000): 105.2
Days precipitation at or above 0.10 inches (P010): 74.0
Days Precipitation at or above 1.00 inches (P100): 11.6
Days Snowfall at or above 0.1 inches (S001): 8.7
Days Snowfall at or above 1.0 inches (S010): 5.6
Days Snowfall at or above 10.0 inches (S100): 0.0
------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------
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
