Weather History for St. Charles, MO

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Wednesday, May 15, 2013

  Actual Average (KSTL) Record (KSTL)
Temperature  
Mean Temperature 78 °F 66 °F  
Max Temperature 91 °F 76 °F 94 °F (1944)
Min Temperature 66 °F 57 °F 39 °F (1959)
Degree Days  
Heating Degree Days 0 3  
Month to date heating degree days 52  
Since 1 July heating degree days 4508  
Cooling Degree Days 14 4  
Month to date cooling degree days 42  
Year to date cooling degree days 88  
Growing Degree Days 28 (Base 50)    
Moisture  
Dew Point 57 °F    
Average Humidity 46    
Maximum Humidity 65    
Minimum Humidity 31    
Precipitation  
Precipitation 0.00 in 0.16 in 1.91 in (1990)
Month to date precipitation 2.20  
Year to date precipitation 13.85  
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 29.86 in    
Wind  
Wind Speed 10 mph (WSW)    
Max Wind Speed 15 mph    
Max Gust Speed 23 mph    
Visibility 10 miles    
Events Thunderstorm    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

May. 15, 2013 Rise Set
Actual Time 5:48 AM CDT 8:07 PM CDT
Civil Twilight 5:18 AM CDT 8:37 PM CDT
Nautical Twilight 4:41 AM CDT 9:15 PM CDT
Astronomical Twilight 4:01 AM CDT 9:55 PM CDT
Moon 10:24 AM CDT (5/15) No Moon Set
Length of Visible Light 15h 19m
Length of Day
14h 18m
Waxing Crescent, 27% of the Moon is Illuminated
May 15
Waxing Crescent
May 17
First Quarter
May 24
Full
May 31
Last Quarter
Jun 8
New

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 77.0 °F - 48.9 °F 37% 29.85 in 10.0 mi WSW 10.4 mph - N/A   Clear
1:54 AM 77.0 °F - 50.0 °F 39% 29.86 in 10.0 mi WSW 8.1 mph - N/A   Clear
2:54 AM 75.9 °F - 50.0 °F 40% 29.85 in 10.0 mi WSW 10.4 mph 21.9 mph N/A   Clear
3:54 AM 73.9 °F - 51.1 °F 45% 29.87 in 10.0 mi WSW 11.5 mph - N/A   Clear
4:54 AM 72.0 °F - 51.1 °F 48% 29.89 in 10.0 mi WSW 10.4 mph - N/A   Clear
5:54 AM 66.0 °F - 52.0 °F 60% 29.91 in 10.0 mi SW 5.8 mph - N/A   Clear
6:54 AM 66.9 °F - 54.0 °F 63% 29.92 in 10.0 mi SW 4.6 mph - N/A   Clear
7:54 AM 72.0 °F - 53.1 °F 51% 29.92 in 10.0 mi SW 10.4 mph - N/A   Clear
8:54 AM 75.9 °F - 53.1 °F 45% 29.91 in 10.0 mi WSW 12.7 mph - N/A   Clear
9:54 AM 78.1 °F - 55.0 °F 45% 29.91 in 10.0 mi WSW 11.5 mph - N/A   Clear
10:54 AM 82.0 °F 81.7 °F 57.0 °F 42% 29.91 in 10.0 mi WSW 11.5 mph - N/A   Clear
11:54 AM 84.0 °F 83.0 °F 55.9 °F 38% 29.88 in 10.0 mi West 15.0 mph 23.0 mph N/A   Clear
12:54 PM 87.1 °F 85.9 °F 57.0 °F 36% 29.86 in 10.0 mi West 10.4 mph 16.1 mph N/A   Clear
1:54 PM 88.0 °F 87.6 °F 60.1 °F 39% 29.84 in 10.0 mi WSW 11.5 mph - N/A   Clear
2:54 PM 90.0 °F 89.7 °F 60.1 °F 37% 29.83 in 10.0 mi WSW 15.0 mph 19.6 mph N/A   Clear
3:54 PM 91.0 °F 90.2 °F 59.0 °F 34% 29.81 in 10.0 mi WSW 10.4 mph - N/A   Clear
4:54 PM 91.0 °F 89.7 °F 57.0 °F 32% 29.79 in 10.0 mi SW 13.8 mph 21.9 mph N/A   Clear
5:54 PM 90.0 °F 88.1 °F 55.9 °F 31% 29.79 in 10.0 mi WSW 12.7 mph - N/A   Clear
6:54 PM 88.0 °F 86.9 °F 57.9 °F 36% 29.78 in 10.0 mi SW 11.5 mph - N/A   Partly Cloudy
7:54 PM 82.9 °F 83.3 °F 61.0 °F 47% 29.80 in 10.0 mi SW 8.1 mph - N/A   Clear
8:54 PM 81.0 °F 81.9 °F 62.1 °F 52% 29.81 in 10.0 mi SW 8.1 mph - N/A   Scattered Clouds
9:54 PM 80.1 °F 81.2 °F 62.1 °F 54% 29.83 in 10.0 mi SW 12.7 mph - N/A   Clear
10:54 PM 77.0 °F - 63.0 °F 62% 29.83 in 10.0 mi SW 9.2 mph - N/A   Clear
11:36 PM 77.0 °F - 62.6 °F 61% 29.86 in 10.0 mi WSW 8.1 mph - N/A Thunderstorm Clear
11:51 PM 77.0 °F - 64.4 °F 65% 29.88 in 10.0 mi West 4.6 mph - N/A   Clear
11:54 PM 77.0 °F - 64.0 °F 64% 29.86 in 10.0 mi West 5.8 mph - N/A   Clear