Weather History for St. Charles, MO

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Sunday, January 20, 2013

  Actual Average (KSTL) Record (KSTL)
Temperature  
Mean Temperature 34 °F 32 °F  
Max Temperature 43 °F 40 °F 72 °F (1906)
Min Temperature 23 °F 24 °F -18 °F (1985)
Degree Days  
Heating Degree Days 32 33  
Month to date heating degree days 668  
Since 1 July heating degree days 2433  
Cooling Degree Days 0 0  
Month to date cooling degree days 0  
Year to date cooling degree days 0  
Moisture  
Dew Point 14 °F    
Average Humidity 52    
Maximum Humidity 69    
Minimum Humidity 35    
Precipitation  
Precipitation 0.00 in 0.08 in 1.63 in (1894)
Month to date precipitation 1.59  
Year to date precipitation 1.59  
Snow  
Snow 0.00 in 0.20 in 5.70 in (2011)
Month to date snowfall 3.6  
Since 1 July snowfall 8.7  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 30.30 in    
Wind  
Wind Speed 10 mph (North)    
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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Astronomy

Jan. 20, 2013 Rise Set
Actual Time 7:16 AM CST 5:09 PM CST
Civil Twilight 6:47 AM CST 5:38 PM CST
Nautical Twilight 6:15 AM CST 6:11 PM CST
Astronomical Twilight 5:43 AM CST 6:42 PM CST
Moon 12:10 PM CST (1/20) 1:49 AM CST (1/20)
Length of Visible Light 10h 50m
Length of Day
9h 53m
Waxing Gibbous, 66% of the Moon is Illuminated
Jan 20
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 43.0 °F 36.8 °F 28.0 °F 56% 30.16 in 10.0 mi NW 11.5 mph 24.2 mph N/A   Clear
1:54 AM 41.0 °F 33.5 °F 23.0 °F 49% 30.19 in 10.0 mi NW 13.8 mph 19.6 mph N/A   Clear
2:54 AM 37.0 °F 31.0 °F 21.9 °F 54% 30.22 in 10.0 mi NW 8.1 mph - N/A   Clear
3:54 AM 34.0 °F 23.0 °F 21.0 °F 59% 30.25 in 10.0 mi NNE 18.4 mph - N/A   Clear
4:54 AM 30.0 °F 21.1 °F 21.0 °F 69% 30.27 in 10.0 mi North 10.4 mph 19.6 mph N/A   Clear
5:54 AM 28.9 °F 20.4 °F 18.0 °F 64% 30.30 in 10.0 mi NNW 9.2 mph - N/A   Clear
6:54 AM 26.1 °F 17.6 °F 9.0 °F 49% 30.32 in 10.0 mi North 8.1 mph - N/A   Clear
7:54 AM 26.1 °F 18.4 °F 10.0 °F 51% 30.34 in 10.0 mi NNE 6.9 mph - N/A   Clear
8:54 AM 27.0 °F 18.0 °F 9.0 °F 47% 30.36 in 10.0 mi North 9.2 mph - N/A   Clear
9:54 AM 27.0 °F 19.5 °F 8.1 °F 45% 30.37 in 10.0 mi NNE 6.9 mph - N/A   Clear
10:54 AM 28.9 °F 22.8 °F 10.0 °F 45% 30.36 in 10.0 mi NNE 5.8 mph - N/A   Clear
12:54 PM 33.1 °F 26.9 °F 10.9 °F 40% 30.29 in 10.0 mi NE 6.9 mph - N/A   Clear
1:54 PM 33.1 °F 26.1 °F 10.9 °F 40% 30.32 in 10.0 mi NW 8.1 mph - N/A   Partly Cloudy
2:54 PM 32.0 °F 26.4 °F 7.0 °F 35% 30.31 in 10.0 mi North 5.8 mph - N/A   Partly Cloudy
3:54 PM 30.0 °F 21.7 °F 12.9 °F 49% 30.32 in 10.0 mi NNE 9.2 mph - N/A   Overcast
4:54 PM 28.9 °F 22.8 °F 12.9 °F 51% 30.32 in 10.0 mi NNE 5.8 mph - N/A   Overcast
5:54 PM 28.0 °F 20.0 °F 12.0 °F 51% 30.32 in 10.0 mi NNE 8.1 mph - N/A   Overcast
6:54 PM 27.0 °F 18.0 °F 12.9 °F 56% 30.32 in 10.0 mi North 9.2 mph - N/A   Mostly Cloudy
7:54 PM 26.1 °F 16.2 °F 12.9 °F 58% 30.32 in 10.0 mi North 10.4 mph - N/A   Overcast
8:54 PM 26.1 °F 15.6 °F 12.0 °F 55% 30.33 in 10.0 mi North 11.5 mph - N/A   Overcast
9:54 PM 25.0 °F 16.3 °F 12.0 °F 58% 30.33 in 10.0 mi North 8.1 mph - N/A   Overcast
10:54 PM 24.1 °F 16.0 °F 12.0 °F 60% 30.32 in 10.0 mi NNW 6.9 mph - N/A   Overcast
11:54 PM 23.0 °F 10.6 °F 10.9 °F 60% 30.33 in 10.0 mi NW 13.8 mph 19.6 mph N/A   Mostly Cloudy