Jacksonville 2 Climate Normals

Official 1981-2010 Climate Normals

City: JACKSONVILLE 2
State: IL
ID: 114447
Latitude: 39.7136
Longitude: -90.2289
Elevation: 599.9 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: 35.8 40.9 52.6 65.2 75.4 83.8 88.1 86.6 79.8 67.6 53.2 39.1
Mean: 26.9 30.9 41.7 53.7 63.9 73.0 77.1 75.3 67.3 55.3 43.1 30.4
Low: 18.0 20.9 30.7 42.2 52.3 62.1 66.0 63.9 54.7 42.9 32.9 21.7
CDD: 0 0 2 15 67 244 374 319 123 24 0 0
HDD: 1181 954 726 354 102 6 0 1 56 326 659 1072

Number of Days
T090: 0.0 0.0 0.0 0.2 1.0 3.7 9.8 8.8 2.2 0.4 0.0 0.0
T100: 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.2 0.2 0.0 0.0 0.0
T000: 2.3 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.8
T032: 26.5 25.0 18.3 3.2 0.0 0.0 0.0 0.0 0.0 2.4 14.8 27.0
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Annual Values

High Temp: 64.1 F
Mean Temp: 53.3 F
Low Temp: 42.5 F
Cooling DD: 1167
Heating DD: 5438

Days above 90 (T090): 26.1
Days above 100 (T100): 0.6
Days below 0 (T000): 3.3
Days below 32 (T032): 117.2
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Precipitation-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
Prcp: 2.04 1.93 3.06 3.93 4.51 4.48 3.86 3.51 3.68 3.19 3.47 2.74
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Annual Values

Precipitation: 40.40 inches

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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