Weather History for St. Charles, MO

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Sunday, May 19, 2013

  Actual Average (KSTL) Record (KSTL)
Temperature  
Mean Temperature 80 °F 68 °F  
Max Temperature 91 °F 77 °F 94 °F (1996)
Min Temperature 68 °F 58 °F 40 °F (1894)
Degree Days  
Heating Degree Days 0 2  
Month to date heating degree days 60  
Since 1 July heating degree days 4516  
Cooling Degree Days 14 5  
Month to date cooling degree days 59  
Year to date cooling degree days 105  
Growing Degree Days 30 (Base 50)    
Moisture  
Dew Point 67 °F    
Average Humidity 67    
Maximum Humidity 87    
Minimum Humidity 48    
Precipitation  
Precipitation 0.00 in 0.15 in 2.14 in (1915)
Month to date precipitation 2.80  
Year to date precipitation 14.45  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2012)
Month to date snowfall 0.0  
Since 1 July snowfall 17.7  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 29.80 in    
Wind  
Wind Speed 10 mph (SSE)    
Max Wind Speed 23 mph    
Max Gust Speed 30 mph    
Visibility 8 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

May. 19, 2013 Rise Set
Actual Time 5:45 AM CDT 8:11 PM CDT
Civil Twilight 5:15 AM CDT 8:41 PM CDT
Nautical Twilight 4:37 AM CDT 9:19 PM CDT
Astronomical Twilight 3:56 AM CDT 10:01 PM CDT
Moon 2:18 PM CDT (5/19) 2:05 AM CDT (5/19)
Length of Visible Light 15h 26m
Length of Day
14h 25m
Waxing Gibbous, 65% of the Moon is Illuminated
May 19
Waxing Gibbous
May 24
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter

Hourly Weather History & Observations

Time (CDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 70.0 °F - 63.0 °F 78% 29.88 in 10.0 mi ESE 9.2 mph - N/A   Clear
1:54 AM 72.0 °F - 64.0 °F 76% 29.88 in 10.0 mi SE 6.9 mph - N/A   Overcast
2:54 AM 72.0 °F - 64.0 °F 76% 29.86 in 10.0 mi ESE 8.1 mph - N/A   Overcast
3:54 AM 69.1 °F - 64.0 °F 84% 29.88 in 9.0 mi Calm Calm - N/A   Partly Cloudy
4:54 AM 68.0 °F - 64.0 °F 87% 29.86 in 8.0 mi East 6.9 mph - N/A   Partly Cloudy
5:54 AM 69.1 °F - 64.9 °F 87% 29.85 in 7.0 mi ESE 6.9 mph - N/A   Partly Cloudy
7:54 AM 73.0 °F - 66.9 °F 81% 29.85 in 8.0 mi SSE 8.1 mph - N/A   Clear
8:54 AM 75.9 °F - 68.0 °F 76% 29.86 in 8.0 mi SSE 6.9 mph - N/A   Scattered Clouds
9:54 AM 78.1 °F - 69.1 °F 74% 29.89 in 7.0 mi SW 11.5 mph - N/A   Overcast
10:54 AM 81.0 °F 84.9 °F 71.1 °F 72% 29.86 in 7.0 mi Variable 6.9 mph - N/A   Partly Cloudy
11:54 AM 84.0 °F 89.6 °F 72.0 °F 67% 29.83 in 6.0 mi South 6.9 mph - N/A   Haze
12:54 PM 87.1 °F 93.6 °F 72.0 °F 61% 29.79 in 7.0 mi ESE 11.5 mph - N/A   Clear
3:54 PM 91.0 °F 95.6 °F 69.1 °F 48% 29.71 in 7.0 mi SSE 20.7 mph 29.9 mph N/A   Partly Cloudy
4:54 PM 90.0 °F 96.4 °F 71.1 °F 54% 29.70 in 8.0 mi SSE 21.9 mph 27.6 mph N/A   Clear
5:54 PM 89.1 °F 92.1 °F 66.9 °F 48% 29.68 in 8.0 mi South 23.0 mph 29.9 mph N/A   Clear
6:54 PM 87.1 °F 91.3 °F 69.1 °F 55% 29.67 in 8.0 mi SSE 23.0 mph - N/A   Clear
7:54 PM 84.0 °F 86.3 °F 66.0 °F 55% 29.69 in 10.0 mi South 19.6 mph 25.3 mph N/A   Clear
8:54 PM 82.0 °F 83.0 °F 62.1 °F 51% 29.71 in 10.0 mi South 15.0 mph 23.0 mph N/A   Clear
9:54 PM 81.0 °F 82.2 °F 63.0 °F 54% 29.75 in 10.0 mi South 19.6 mph 24.2 mph N/A   Clear
11:54 PM 78.1 °F - 64.9 °F 64% 29.76 in 10.0 mi South 13.8 mph 23.0 mph N/A   Clear