Weather History for St. Charles, MO

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Monday, December 10, 2012

  Actual Average (KSTL) Record (KSTL)
Temperature  
Mean Temperature 30 °F 36 °F  
Max Temperature 35 °F 44 °F 73 °F (1889)
Min Temperature 26 °F 28 °F -4 °F (1917)
Degree Days  
Heating Degree Days 34 29  
Month to date heating degree days 274  
Since 1 July heating degree days 1100  
Cooling Degree Days 0 0  
Month to date cooling degree days 0  
Year to date cooling degree days 1646  
Moisture  
Dew Point 21 °F    
Average Humidity 71    
Maximum Humidity 75    
Minimum Humidity 64    
Precipitation  
Precipitation 0.00 in 0.10 in 2.15 in (1971)
Month to date precipitation 1.01  
Year to date precipitation 39.13  
Snow  
Snow 0.00 in 0.10 in 4.00 in (1944)
Month to date snowfall 1.0  
Since 1 July snowfall 1.7  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 29.98 in    
Wind  
Wind Speed 14 mph (WNW)    
Max Wind Speed 18 mph    
Max Gust Speed 24 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 10, 2012 Rise Set
Actual Time 7:09 AM CST 4:39 PM CST
Civil Twilight 6:40 AM CST 5:09 PM CST
Nautical Twilight 6:06 AM CST 5:42 PM CST
Astronomical Twilight 5:34 AM CST 6:15 PM CST
Moon 3:54 AM CST (12/10) 2:28 PM CST (12/10)
Length of Visible Light 10h 29m
Length of Day
9h 29m
Waning Crescent, 10% of the Moon is Illuminated
Dec 10
Waning Crescent
Dec 13
New
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Hourly Weather History & Observations

Time (CST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:04 AM 35.6 °F 25.9 °F 28.4 °F 75% 29.90 in 10.0 mi West 16.1 mph 23.0 mph N/A   Mostly Cloudy
12:54 AM 32.0 °F 20.5 °F 24.1 °F 73% 29.91 in 10.0 mi WNW 18.4 mph 24.2 mph N/A   Overcast
1:54 AM 30.9 °F 19.4 °F 23.0 °F 72% 29.93 in 10.0 mi WNW 17.3 mph - N/A   Overcast
2:54 AM 28.9 °F 16.9 °F 21.9 °F 75% 29.92 in 10.0 mi West 17.3 mph - N/A   Overcast
3:54 AM 28.0 °F 17.0 °F 21.0 °F 75% 29.91 in 10.0 mi WNW 13.8 mph - N/A   Overcast
4:54 AM 28.0 °F 15.7 °F 21.0 °F 75% 29.90 in 10.0 mi WNW 17.3 mph - N/A   Overcast
5:54 AM 27.0 °F 13.9 °F 19.0 °F 72% 29.92 in 10.0 mi NW 18.4 mph - N/A   Overcast
6:54 AM 27.0 °F 16.7 °F 19.0 °F 72% 29.95 in 10.0 mi WNW 11.5 mph 20.7 mph N/A   Overcast
7:54 AM 26.1 °F 14.0 °F 19.0 °F 75% 29.96 in 10.0 mi WNW 15.0 mph - N/A   Overcast
8:54 AM 26.1 °F 13.6 °F 19.0 °F 75% 29.98 in 10.0 mi WNW 16.1 mph 23.0 mph N/A   Overcast
9:54 AM 27.0 °F 16.1 °F 19.0 °F 72% 29.99 in 10.0 mi WNW 12.7 mph - N/A   Overcast
10:54 AM 27.0 °F 16.7 °F 19.9 °F 75% 29.99 in 10.0 mi WNW 11.5 mph - N/A   Overcast
12:32 PM 28.4 °F 18.0 °F 19.4 °F 69% 29.95 in 10.0 mi WNW 12.7 mph - N/A   Overcast
12:54 PM 28.0 °F 17.5 °F 19.9 °F 72% 29.95 in 10.0 mi WNW 12.7 mph - N/A   Overcast
1:54 PM 30.0 °F 20.0 °F 19.9 °F 66% 29.95 in 10.0 mi WNW 12.7 mph - N/A   Overcast
2:54 PM 30.0 °F 19.5 °F 19.9 °F 66% 29.97 in 10.0 mi WNW 13.8 mph - N/A   Overcast
3:12 PM 30.2 °F 21.9 °F 21.2 °F 69% 29.96 in 10.0 mi WNW 9.2 mph - N/A   Overcast
3:54 PM 30.0 °F 21.7 °F 21.0 °F 69% 29.99 in 10.0 mi WNW 9.2 mph - N/A   Overcast
4:54 PM 30.9 °F 23.5 °F 19.9 °F 64% 30.00 in 10.0 mi WNW 8.1 mph - N/A   Overcast
5:54 PM 30.9 °F 22.2 °F 21.0 °F 67% 30.03 in 10.0 mi WNW 10.4 mph - N/A   Overcast
6:09 PM 30.2 °F 21.3 °F 21.2 °F 69% 30.02 in 10.0 mi West 10.4 mph - N/A   Overcast
6:54 PM 30.9 °F 25.2 °F 21.9 °F 69% 30.05 in 10.0 mi West 5.8 mph - N/A   Overcast
7:54 PM 30.9 °F 25.2 °F 21.0 °F 67% 30.05 in 10.0 mi West 5.8 mph - N/A   Overcast
8:54 PM 30.0 °F 22.4 °F 21.0 °F 69% 30.06 in 10.0 mi West 8.1 mph - N/A   Overcast
9:54 PM 28.9 °F 20.4 °F 21.0 °F 72% 30.07 in 10.0 mi West 9.2 mph - N/A   Mostly Cloudy
10:54 PM 28.0 °F 20.0 °F 19.9 °F 72% 30.07 in 10.0 mi West 8.1 mph - N/A   Clear
11:54 PM 27.0 °F 17.3 °F 19.9 °F 75% 30.09 in 10.0 mi WNW 10.4 mph - N/A   Clear