Weather History for St. Charles, MO

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Sunday, September 8, 2013

  Actual Average (KSTL) Record (KSTL)
Temperature  
Mean Temperature 78 °F 74 °F  
Max Temperature 84 °F 83 °F 101 °F (1947)
Min Temperature 71 °F 64 °F 42 °F (1986)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0  
Since 1 July heating degree days 1  
Cooling Degree Days 12 9  
Month to date cooling degree days 81  
Year to date cooling degree days 1480  
Growing Degree Days 28 (Base 50)    
Moisture  
Dew Point 71 °F    
Average Humidity 86    
Maximum Humidity 100    
Minimum Humidity 69    
Precipitation  
Precipitation 0.30 in 0.10 in 2.87 in (1920)
Month to date precipitation 0.83  
Year to date precipitation 28.58  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2013)
Month to date snowfall 0.0  
Since 1 July snowfall 0.0  
Since 1 September snowfall 0.0  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 29.92 in    
Wind  
Wind Speed 4 mph (SE)    
Max Wind Speed 12 mph    
Max Gust Speed -    
Visibility 7 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Sep. 08, 2013 Rise Set
Actual Time 6:37 AM CDT 7:20 PM CDT
Civil Twilight 6:10 AM CDT 7:47 PM CDT
Nautical Twilight 5:38 AM CDT 8:19 PM CDT
Astronomical Twilight 5:05 AM CDT 8:52 PM CDT
Moon 9:52 AM CDT (9/8) 8:58 PM CDT (9/8)
Length of Visible Light 13h 37m
Length of Day
12h 43m
Waxing Crescent, 11% of the Moon is Illuminated
Sep 8
Waxing Crescent
Sep 12
First Quarter
Sep 19
Full
Sep 26
Last Quarter
Oct 4
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 73.9 °F - 68.0 °F 82% 29.91 in 10.0 mi Calm Calm - N/A   Clear
1:54 AM 73.0 °F - 69.1 °F 87% 29.91 in 10.0 mi Calm Calm - N/A   Clear
2:54 AM 73.9 °F - 68.0 °F 82% 29.90 in 10.0 mi Calm Calm - N/A   Clear
3:54 AM 73.0 °F - 69.1 °F 87% 29.89 in 10.0 mi East 4.6 mph - 0.00 in Rain Light Rain
4:54 AM 73.9 °F - 68.0 °F 82% 29.90 in 10.0 mi ENE 3.5 mph - 0.00 in   Scattered Clouds
5:54 AM 73.0 °F - 69.1 °F 87% 29.89 in 10.0 mi Calm Calm - 0.00 in   Scattered Clouds
6:54 AM 73.0 °F - 69.1 °F 87% 29.92 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:54 AM 72.0 °F - 69.1 °F 91% 29.96 in 6.0 mi ENE 11.5 mph - 0.06 in Rain Light Rain
8:54 AM 72.0 °F - 70.0 °F 93% 29.99 in 5.0 mi NE 10.4 mph - 0.09 in Rain Light Rain
9:51 AM 71.6 °F - 71.6 °F 100% 29.99 in 2.0 mi SSW 8.1 mph - 0.13 in Rain Rain
9:54 AM 72.0 °F - 71.1 °F 97% 29.98 in 2.0 mi SSW 6.9 mph - 0.13 in Rain Rain
10:20 AM 71.6 °F - 69.8 °F 94% 30.00 in 3.0 mi Calm Calm - 0.02 in Rain Light Rain
10:51 AM 71.6 °F - 71.6 °F 100% 29.97 in 2.5 mi SSE 5.8 mph - 0.02 in Rain Light Rain
10:54 AM 72.0 °F - 71.1 °F 97% 29.96 in 2.5 mi South 6.9 mph - 0.02 in Rain Light Rain
11:11 AM 71.6 °F - 71.6 °F 100% 29.97 in 3.0 mi SSW 5.8 mph - 0.00 in Rain Light Rain
11:54 AM 75.0 °F - 72.0 °F 90% 29.93 in 6.0 mi SSW 6.9 mph - 0.00 in   Clear
12:54 PM 78.1 °F - 73.0 °F 84% 29.91 in 9.0 mi SSW 6.9 mph - N/A   Clear
1:54 PM 82.0 °F 86.3 °F 71.1 °F 69% 29.91 in 10.0 mi ESE 8.1 mph - N/A   Clear
2:54 PM 82.9 °F 88.8 °F 73.0 °F 72% 29.90 in 8.0 mi ESE 10.4 mph - N/A   Partly Cloudy
3:54 PM 84.0 °F 90.2 °F 73.0 °F 69% 29.89 in 8.0 mi ESE 10.4 mph - N/A   Partly Cloudy
4:54 PM 84.0 °F 90.2 °F 73.0 °F 69% 29.89 in 9.0 mi SE 10.4 mph - N/A   Clear
5:54 PM 82.9 °F 88.0 °F 72.0 °F 69% 29.89 in 8.0 mi SE 11.5 mph - N/A   Mostly Cloudy
6:54 PM 81.0 °F 85.8 °F 73.0 °F 77% 29.89 in 9.0 mi SE 6.9 mph - N/A   Overcast
7:54 PM 78.1 °F - 72.0 °F 81% 29.89 in 9.0 mi ESE 4.6 mph - N/A   Mostly Cloudy
8:54 PM 75.0 °F - 72.0 °F 90% 29.90 in 7.0 mi East 3.5 mph - N/A   Overcast
9:54 PM 73.9 °F - 71.1 °F 91% 29.91 in 7.0 mi East 4.6 mph - N/A   Mostly Cloudy
10:54 PM 72.0 °F - 71.1 °F 97% 29.91 in 4.0 mi East 4.6 mph - N/A   Clear
11:54 PM 73.0 °F - 71.1 °F 93% 29.91 in 4.0 mi ENE 3.5 mph - N/A   Clear