Weather History for St. Charles, MO

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Friday, April 12, 2013

  Actual Average (KSTL) Record (KSTL)
Temperature  
Mean Temperature 40 °F 56 °F  
Max Temperature 45 °F 66 °F 89 °F (1971)
Min Temperature 37 °F 46 °F 24 °F (1940)
Degree Days  
Heating Degree Days 24 10  
Month to date heating degree days 141  
Since 1 July heating degree days 4327  
Cooling Degree Days 0 1  
Month to date cooling degree days 12  
Year to date cooling degree days 19  
Moisture  
Dew Point 31 °F    
Average Humidity 66    
Maximum Humidity 73    
Minimum Humidity 60    
Precipitation  
Precipitation 0.00 in 0.11 in 2.00 in (1909)
Month to date precipitation 1.43  
Year to date precipitation 9.39  
Snow  
Snow 0.00 in 0.10 in 0.10 in (1957)
Month to date snowfall 0.3  
Since 1 July snowfall 17.6  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 29.86 in    
Wind  
Wind Speed 12 mph (West)    
Max Wind Speed 22 mph    
Max Gust Speed 25 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Apr. 12, 2013 Rise Set
Actual Time 6:29 AM CDT 7:36 PM CDT
Civil Twilight 6:01 AM CDT 8:03 PM CDT
Nautical Twilight 5:29 AM CDT 8:36 PM CDT
Astronomical Twilight 4:55 AM CDT 9:10 PM CDT
Moon 7:40 AM CDT (4/12) 10:05 PM CDT (4/12)
Length of Visible Light 14h 01m
Length of Day
13h 07m
Waxing Crescent, 5% of the Moon is Illuminated
Apr 12
Waxing Crescent
Apr 18
First Quarter
Apr 25
Full
May 2
Last Quarter
May 9
New

Hourly Weather History & Observations

Time (CDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 41.0 °F 35.8 °F 30.9 °F 67% 29.74 in 10.0 mi SW 8.1 mph - N/A   Overcast
1:54 AM 41.0 °F 34.7 °F 32.0 °F 70% 29.73 in 10.0 mi SW 10.4 mph - N/A   Overcast
2:54 AM 41.0 °F 34.3 °F 30.9 °F 67% 29.73 in 10.0 mi WSW 11.5 mph - N/A   Overcast
3:54 AM 39.9 °F 32.1 °F 30.0 °F 68% 29.73 in 10.0 mi West 13.8 mph - N/A   Mostly Cloudy
4:54 AM 37.9 °F 30.9 °F 30.0 °F 73% 29.74 in 10.0 mi West 10.4 mph - N/A   Clear
5:54 AM 37.9 °F 30.5 °F 28.9 °F 70% 29.75 in 10.0 mi West 11.5 mph - N/A   Clear
6:54 AM 37.9 °F 30.9 °F 28.0 °F 68% 29.77 in 10.0 mi WSW 10.4 mph - N/A   Clear
7:54 AM 39.0 °F 30.6 °F 28.9 °F 67% 29.79 in 10.0 mi WSW 15.0 mph 20.7 mph N/A   Clear
8:54 AM 39.9 °F 32.1 °F 28.9 °F 65% 29.80 in 10.0 mi WSW 13.8 mph 21.9 mph N/A   Overcast
9:54 AM 41.0 °F 32.8 °F 28.9 °F 62% 29.81 in 10.0 mi West 16.1 mph 23.0 mph N/A   Overcast
10:54 AM 42.1 °F 33.3 °F 30.0 °F 62% 29.84 in 10.0 mi West 19.6 mph - N/A   Overcast
11:54 AM 41.0 °F 31.4 °F 30.0 °F 65% 29.87 in 10.0 mi West 21.9 mph 25.3 mph N/A   Overcast
12:54 PM 42.1 °F 33.6 °F 28.9 °F 60% 29.88 in 10.0 mi West 18.4 mph 25.3 mph N/A   Overcast
1:54 PM 43.0 °F 35.1 °F 30.0 °F 60% 29.90 in 10.0 mi West 17.3 mph - N/A   Overcast
2:54 PM 44.1 °F 36.8 °F 30.9 °F 60% 29.92 in 10.0 mi WSW 16.1 mph - N/A   Overcast
3:54 PM 44.1 °F 36.8 °F 30.9 °F 60% 29.92 in 10.0 mi West 16.1 mph - N/A   Overcast
4:54 PM 44.1 °F 37.1 °F 30.9 °F 60% 29.93 in 10.0 mi West 15.0 mph - N/A   Overcast
5:54 PM 44.1 °F 38.1 °F 32.0 °F 63% 29.95 in 10.0 mi WNW 11.5 mph - N/A   Overcast
6:54 PM 43.0 °F 36.8 °F 32.0 °F 65% 29.96 in 10.0 mi West 11.5 mph - N/A   Overcast
7:54 PM 43.0 °F 37.2 °F 32.0 °F 65% 29.97 in 10.0 mi West 10.4 mph - N/A   Overcast
8:54 PM 43.0 °F 38.8 °F 33.1 °F 68% 29.99 in 10.0 mi West 6.9 mph - N/A   Overcast
9:54 PM 43.0 °F 39.5 °F 33.1 °F 68% 30.00 in 10.0 mi West 5.8 mph - N/A   Overcast
10:54 PM 42.1 °F 39.2 °F 33.1 °F 70% 30.01 in 10.0 mi WSW 4.6 mph - N/A   Overcast
11:54 PM 41.0 °F - 33.1 °F 73% 30.01 in 10.0 mi Calm Calm - N/A   Mostly Cloudy