Official 1981-2010 Climate Normals
City: MARSEILLES LOCK
State: IL
ID: 115372
Latitude: 41.3286
Longitude: -88.7533
Elevation: 490.0 ft
Temperature-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High: 30.6 35.1 47.2 60.8 71.8 80.2 83.3 82.0 76.0 63.5 48.8 34.6
Mean: 22.3 26.3 37.2 49.3 60.0 69.0 72.5 71.1 64.0 52.1 39.7 26.5
Low: 14.0 17.6 27.3 37.7 48.2 57.9 61.7 60.3 52.0 40.8 30.6 18.4
CDD: 0 0 0 6 47 157 237 199 77 13 0 0
HDD: 1323 1082 860 478 202 35 4 9 108 411 759 1193
Number of Days
T090: 0.0 0.0 0.0 0.0 0.8 2.5 3.0 2.1 1.1 0.0 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: 4.2 2.4 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.5
T032: 29.2 25.8 22.9 8.7 0.6 0.0 0.0 0.0 0.0 5.6 17.1 27.5
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Annual Values
High Temp: 59.6 F
Mean Temp: 49.3 F
Low Temp: 39.0 F
Cooling DD: 736
Heating DD: 6466
Days above 90 (T090): 9.5
Days above 100 (T100): 0.1
Days below 0 (T000): 9.2
Days below 32 (T032): 137.4
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Precipitation-Related Normals
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Prcp: 1.82 1.64 2.72 3.33 4.28 4.19 4.13 4.12 3.47 3.01 3.32 2.34
Snow: 8.0 6.2 2.3 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.5 5.8
Number of Days
P001: 9.9 8.7 10.8 11.3 11.2 10.5 9.3 9.2 8.5 9.0 10.4 11.4
P010: 4.8 4.0 6.0 7.0 7.8 7.3 6.5 6.4 5.6 5.8 6.1 5.4
P100: 0.3 0.2 0.5 0.7 1.1 1.2 1.3 1.2 1.0 0.6 0.9 0.4
S001: 4.9 3.8 1.6 0.3 0.0 0.0 0.0 0.0 0.0 0.1 0.5 4.2
S010: 2.9 2.2 0.8 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.2 2.5
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
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Annual Values
Precipitation: 38.37 inches
Snowfall: 23.3 inches
Days precipitation at or above 0 inches (P000): 120.2
Days precipitation at or above 0.10 inches (P010): 72.7
Days Precipitation at or above 1.00 inches (P100): 9.4
Days Snowfall at or above 0.1 inches (S001): 15.4
Days Snowfall at or above 1.0 inches (S010): 8.8
Days Snowfall at or above 10.0 inches (S100): 0.0
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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
