Sidell Climate Normals

Official 1981-2010 Climate Normals

City: SIDELL 5NW
State: IL
ID: 117952
Latitude: 39.9811
Longitude: -87.8769
Elevation: 674.7 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: 32.5 36.7 49.6 62.9 73.5 83.0 85.6 84.5 78.4 65.7 51.5 36.7
Mean: 24.5 28.0 39.5 51.6 62.5 72.3 74.7 73.2 65.8 53.8 42.1 29.1
Low: 16.5 19.2 29.4 40.3 51.4 61.5 63.8 61.8 53.2 41.9 32.6 21.4
CDD: 0 0 1 8 69 233 302 260 104 17 1 0
HDD: 1255 1037 791 410 148 16 1 8 81 364 689 1114

Number of Days
T090: 0.0 0.0 0.0 0.0 0.9 4.7 6.9 5.3 2.2 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: 3.8 1.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.1
T032: 27.6 25.2 20.0 5.5 0.3 0.0 0.0 0.0 0.0 3.7 15.9 26.7
------------------------------------------------------------------------------------------
Annual Values

High Temp: 61.8 F
Mean Temp: 51.5 F
Low Temp: 41.2 F
Cooling DD: 995
Heating DD: 5915

Days above 90 (T090): 20.0
Days above 100 (T100): 0.0
Days below 0 (T000): 6.4
Days below 32 (T032): 124.9
------------------------------------------------------------------------------------------

Precipitation-Related Normals

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Prcp: 2.16 2.14 2.64 3.75 4.54 3.78 5.15 3.45 2.77 3.34 3.62 2.84
Snow: 7.8 6.8 2.1 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.6 7.0

Number of Days
P001: 9.1 9.5 10.4 11.4 11.3 10.4 9.4 8.2 7.4 8.9 10.3 11.1
P010: 5.1 4.8 6.4 7.7 8.1 7.0 6.9 5.8 4.9 5.7 6.5 6.6
P100: 0.5 0.4 0.4 0.8 1.1 0.9 1.6 1.0 0.7 0.9 0.9 0.5
S001: 4.1 3.8 1.5 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.7 4.4
S010: 2.7 2.0 0.9 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.2 2.4
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: 40.18 inches
Snowfall: 24.6 inches

Days precipitation at or above 0 inches (P000): 117.4
Days precipitation at or above 0.10 inches (P010): 75.5
Days Precipitation at or above 1.00 inches (P100): 9.7
Days Snowfall at or above 0.1 inches (S001): 14.7
Days Snowfall at or above 1.0 inches (S010): 8.3
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