Weather History for St. Charles, MO

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Thursday, March 21, 2013

  Actual Average (KSTL) Record (KSTL)
Temperature  
Mean Temperature 27 °F 48 °F  
Max Temperature 36 °F 58 °F 90 °F (1907)
Min Temperature 19 °F 38 °F 8 °F (1876)
Degree Days  
Heating Degree Days 38 17  
Month to date heating degree days 435  
Since 1 July heating degree days 4033  
Cooling Degree Days 0 0  
Month to date cooling degree days 0  
Year to date cooling degree days 0  
Moisture  
Dew Point 15 °F    
Average Humidity 59    
Maximum Humidity 72    
Minimum Humidity 42    
Precipitation  
Precipitation 0.00 in 0.12 in 1.77 in (1948)
Month to date precipitation 2.10  
Year to date precipitation 6.74  
Snow  
Snow 0.00 in 0.00 in 1.20 in (2006)
Month to date snowfall 1.9  
Since 1 July snowfall 16.9  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 30.08 in    
Wind  
Wind Speed 5 mph (NE)    
Max Wind Speed 8 mph    
Max Gust Speed -    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Mar. 21, 2013 Rise Set
Actual Time 7:03 AM CDT 7:14 PM CDT
Civil Twilight 6:36 AM CDT 7:41 PM CDT
Nautical Twilight 6:05 AM CDT 8:12 PM CDT
Astronomical Twilight 5:33 AM CDT 8:44 PM CDT
Moon 1:47 PM CDT (3/21) 3:22 AM CDT (3/21)
Length of Visible Light 13h 04m
Length of Day
12h 11m
Waxing Gibbous, 69% of the Moon is Illuminated
Mar 21
Waxing Gibbous
Mar 27
Full
Apr 2
Last Quarter
Apr 10
New
Apr 18
First Quarter

Hourly Weather History & Observations

Time (CDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
1:54 AM 24.1 °F 16.0 °F 10.9 °F 57% 30.14 in 10.0 mi NNW 6.9 mph - N/A   Clear
2:54 AM 21.9 °F 15.7 °F 10.9 °F 63% 30.13 in 10.0 mi NNW 4.6 mph - N/A   Clear
3:54 AM 21.0 °F 14.6 °F 10.9 °F 65% 30.12 in 10.0 mi NW 4.6 mph - N/A   Clear
4:54 AM 21.0 °F 13.4 °F 12.0 °F 68% 30.11 in 10.0 mi NNW 5.8 mph - N/A   Clear
5:54 AM 21.0 °F 13.4 °F 10.9 °F 65% 30.12 in 10.0 mi NW 5.8 mph - N/A   Clear
6:54 AM 19.9 °F 11.1 °F 10.9 °F 68% 30.13 in 10.0 mi NW 6.9 mph - N/A   Clear
7:54 AM 21.9 °F 12.5 °F 10.9 °F 63% 30.13 in 10.0 mi North 8.1 mph - N/A   Clear
8:54 AM 23.0 °F 17.0 °F 12.0 °F 63% 30.15 in 10.0 mi NNW 4.6 mph - N/A   Clear
9:54 AM 25.0 °F 20.7 °F 12.0 °F 58% 30.16 in 10.0 mi Variable 3.5 mph - N/A   Clear
10:54 AM 27.0 °F 21.6 °F 12.9 °F 56% 30.14 in 10.0 mi NNE 4.6 mph - N/A   Clear
11:54 AM 28.0 °F - 14.0 °F 56% 30.13 in 10.0 mi Calm Calm - N/A   Clear
12:54 PM 30.0 °F 25.2 °F 15.1 °F 54% 30.11 in 10.0 mi Variable 4.6 mph - N/A   Clear
1:54 PM 32.0 °F - 15.1 °F 50% 30.08 in 10.0 mi Calm Calm - N/A   Clear
2:54 PM 32.0 °F 27.5 °F 15.1 °F 50% 30.04 in 10.0 mi SE 4.6 mph - N/A   Clear
3:54 PM 34.0 °F - 12.9 °F 42% 30.02 in 10.0 mi Calm Calm - N/A   Clear
4:54 PM 34.0 °F 28.8 °F 14.0 °F 44% 30.01 in 10.0 mi SSE 5.8 mph - N/A   Mostly Cloudy
5:54 PM 35.1 °F 29.3 °F 14.0 °F 42% 30.02 in 10.0 mi SE 6.9 mph - N/A   Scattered Clouds
6:54 PM 34.0 °F 28.8 °F 16.0 °F 48% 30.02 in 10.0 mi ESE 5.8 mph - N/A   Clear
7:54 PM 30.9 °F 23.5 °F 21.9 °F 69% 30.01 in 10.0 mi East 8.1 mph - N/A   Clear
8:54 PM 30.9 °F 23.5 °F 19.9 °F 64% 30.02 in 10.0 mi East 8.1 mph - N/A   Clear
9:54 PM 30.9 °F 24.3 °F 21.0 °F 67% 30.04 in 10.0 mi ESE 6.9 mph - N/A   Clear
10:54 PM 30.0 °F 24.1 °F 21.9 °F 72% 30.04 in 10.0 mi ESE 5.8 mph - N/A   Partly Cloudy
11:54 PM 30.0 °F 25.2 °F 21.9 °F 72% 30.04 in 10.0 mi East 4.6 mph - N/A   Partly Cloudy