Weather History for St. Charles, MO

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Monday, January 21, 2013

  Actual Average (KSTL) Record (KSTL)
Temperature  
Mean Temperature 19 °F 32 °F  
Max Temperature 23 °F 40 °F 75 °F (1986)
Min Temperature 12 °F 24 °F -8 °F (1970)
Degree Days  
Heating Degree Days 46 33  
Month to date heating degree days 701  
Since 1 July heating degree days 2466  
Cooling Degree Days 0 0  
Month to date cooling degree days 0  
Year to date cooling degree days 0  
Moisture  
Dew Point 3 °F    
Average Humidity 50    
Maximum Humidity 71    
Minimum Humidity 32    
Precipitation  
Precipitation 0.00 in 0.07 in 2.10 in (1906)
Month to date precipitation 1.66  
Year to date precipitation 1.66  
Snow  
Snow 0.00 in 0.20 in 2.50 in (1959)
Month to date snowfall 3.8  
Since 1 July snowfall 8.9  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 30.37 in    
Wind  
Wind Speed 12 mph (NW)    
Max Wind Speed 18 mph    
Max Gust Speed 28 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jan. 21, 2013 Rise Set
Actual Time 7:15 AM CST 5:10 PM CST
Civil Twilight 6:47 AM CST 5:39 PM CST
Nautical Twilight 6:14 AM CST 6:12 PM CST
Astronomical Twilight 5:42 AM CST 6:43 PM CST
Moon 12:50 PM CST 2:44 AM CST
Length of Visible Light 10h 52m
Length of Day
9h 54m
Waxing Gibbous, 75% of the Moon is Illuminated
Jan 21
Waxing Gibbous
Jan 26
Full
Feb 3
Last Quarter
Feb 10
New
Feb 17
First Quarter

Hourly Weather History & Observations

Time (CST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 21.9 °F 11.0 °F 10.9 °F 63% 30.32 in 10.0 mi NW 10.4 mph - N/A   Partly Cloudy
1:54 AM 21.0 °F 10.6 °F 12.0 °F 68% 30.33 in 10.0 mi NW 9.2 mph - N/A   Clear
2:54 AM 19.9 °F 7.3 °F 12.0 °F 71% 30.33 in 10.0 mi NW 12.7 mph - N/A   Clear
3:24 AM 19.4 °F 5.5 °F 10.4 °F 68% 30.34 in 10.0 mi NW 15.0 mph 27.6 mph N/A   Mostly Cloudy
3:54 AM 19.9 °F 8.6 °F 10.9 °F 68% 30.35 in 10.0 mi NW 10.4 mph - N/A   Mostly Cloudy
4:01 AM 19.4 °F 6.6 °F 10.4 °F 68% 30.34 in 10.0 mi WNW 12.7 mph - N/A   Scattered Clouds
4:54 AM 19.0 °F 8.2 °F 10.0 °F 68% 30.35 in 10.0 mi WNW 9.2 mph - N/A   Clear
5:54 AM 19.0 °F 7.5 °F 9.0 °F 65% 30.35 in 10.0 mi NW 10.4 mph - N/A   Clear
6:54 AM 19.0 °F 3.6 °F 3.0 °F 50% 30.35 in 10.0 mi NW 18.4 mph 27.6 mph N/A   Clear
7:54 AM 19.0 °F 5.0 °F 3.9 °F 52% 30.35 in 10.0 mi WNW 15.0 mph 20.7 mph N/A   Clear
8:54 AM 19.9 °F 4.8 °F 3.0 °F 48% 30.36 in 10.0 mi WNW 18.4 mph - N/A   Clear
9:54 AM 21.0 °F 9.3 °F 3.0 °F 46% 30.37 in 10.0 mi NW 11.5 mph 24.2 mph N/A   Clear
10:54 AM 23.0 °F 9.6 °F -2.0 °F 34% 30.37 in 10.0 mi NW 16.1 mph 25.3 mph N/A   Clear
11:54 AM 23.0 °F 9.2 °F -2.9 °F 32% 30.36 in 10.0 mi NW 17.3 mph 27.6 mph N/A   Clear
12:54 PM 21.9 °F 9.8 °F -0.9 °F 37% 30.36 in 10.0 mi North 12.7 mph 23.0 mph N/A   Clear
1:54 PM 21.0 °F 7.6 °F -2.0 °F 36% 30.37 in 10.0 mi NW 15.0 mph 25.3 mph N/A   Scattered Clouds
2:54 PM 19.0 °F 5.6 °F -2.0 °F 40% 30.37 in 10.0 mi NNW 13.8 mph - N/A   Overcast
3:54 PM 18.0 °F 3.6 °F -4.0 °F 38% 30.40 in 10.0 mi NW 15.0 mph - N/A   Overcast
4:54 PM 18.0 °F 5.4 °F -2.0 °F 41% 30.39 in 10.0 mi NW 11.5 mph - N/A   Overcast
5:54 PM 17.1 °F 5.0 °F -2.0 °F 43% 30.40 in 10.0 mi WNW 10.4 mph - N/A   Overcast
6:54 PM 17.1 °F 5.0 °F -2.9 °F 41% 30.40 in 10.0 mi NW 10.4 mph - N/A   Overcast
7:54 PM 16.0 °F 3.6 °F -2.9 °F 43% 30.40 in 10.0 mi WNW 10.4 mph - N/A   Scattered Clouds
8:54 PM 16.0 °F 2.3 °F -4.0 °F 41% 30.41 in 10.0 mi NW 12.7 mph - N/A   Mostly Cloudy
9:54 PM 15.1 °F 2.5 °F -2.9 °F 45% 30.42 in 10.0 mi NW 10.4 mph - N/A   Mostly Cloudy
10:54 PM 15.1 °F 6.4 °F -0.9 °F 49% 30.43 in 10.0 mi NNW 5.8 mph - N/A   Overcast
11:54 PM 12.9 °F 5.2 °F -0.9 °F 54% 30.43 in 10.0 mi NNW 4.6 mph - N/A   Mostly Cloudy