Weather History for St. Charles, MO

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Thursday, August 21, 2014

  Actual Average (KSTL) Record (KSTL)
Temperature  
Mean Temperature 80 °F 78 °F  
Max Temperature 93 °F 88 °F 104 °F (2003)
Min Temperature 66 °F 69 °F 50 °F (1950)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0  
Since 1 June heating degree days 5  
Since 1 July heating degree days 0  
Cooling Degree Days 14 13  
Month to date cooling degree days 301  
Year to date cooling degree days 1276  
Since 1 June cooling degree days 1102  
Growing Degree Days 30 (Base 50)    
Moisture  
Dew Point 71 °F    
Average Humidity 85    
Maximum Humidity 100    
Minimum Humidity 52    
Precipitation  
Precipitation 0.00 in 0.09 in 2.07 in (1944)
Month to date precipitation 2.08  
Year to date precipitation 26.84  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2013)
Month to date snowfall 0.0  
Since 1 June snowfall 0.0  
Since 1 July snowfall 0.0  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 29.94 in    
Wind  
Wind Speed 4 mph (South)    
Max Wind Speed 12 mph    
Max Gust Speed -    
Visibility 7 miles    
Events Fog    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Aug. 21, 2014 Rise Set
Actual Time 6:20 AM CDT 7:48 PM CDT
Civil Twilight 5:52 AM CDT 8:16 PM CDT
Nautical Twilight 5:18 AM CDT 8:49 PM CDT
Astronomical Twilight 4:43 AM CDT 9:25 PM CDT
Moon 2:52 AM CDT (8/21) 5:16 PM CDT (8/21)
Length of Visible Light 14h 23m
Length of Day
13h 27m
Waning Crescent, 13% of the Moon is Illuminated
Aug 21
Waning Crescent
Aug 25
New
Sep 2
First Quarter
Sep 8
Full
Sep 15
Last 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 72.0 °F - 70.0 °F 93% 29.94 in 10.0 mi East 6.9 mph - N/A   Clear
1:54 AM 71.1 °F - 69.1 °F 93% 29.94 in 10.0 mi East 4.6 mph - N/A   Clear
2:54 AM 71.1 °F - 69.1 °F 93% 29.94 in 10.0 mi ENE 3.5 mph - N/A   Clear
3:54 AM 71.1 °F - 70.0 °F 96% 29.95 in 3.0 mi Calm Calm - N/A   Clear
4:36 AM 70.0 °F - 69.1 °F 97% 29.96 in 1.8 mi Calm Calm - N/A   Partly Cloudy
4:52 AM 69.8 °F - 68.0 °F 94% 29.96 in 3.0 mi Calm Calm - N/A   Scattered Clouds
4:54 AM 69.1 °F - 68.0 °F 96% 29.94 in 3.0 mi Calm Calm - N/A   Scattered Clouds
4:56 AM 69.1 °F - 68.0 °F 96% 29.96 in 1.5 mi Calm Calm - N/A   Mostly Cloudy
5:05 AM 69.1 °F - 68.0 °F 96% 29.95 in 0.8 mi Calm Calm - N/A   Mist
5:13 AM 69.1 °F - 68.0 °F 96% 29.95 in 2.0 mi Calm Calm - N/A   Mostly Cloudy
5:21 AM 69.1 °F - 68.0 °F 96% 29.95 in 0.8 mi Calm Calm - N/A   Mist
5:44 AM 68.0 °F - 68.0 °F 100% 29.95 in 1.0 mi Calm Calm - N/A   Mist
5:54 AM 68.0 °F - 68.0 °F 100% 29.94 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
6:05 AM 68.0 °F - 68.0 °F 100% 29.95 in 0.8 mi North 3.5 mph - N/A   Mist
6:12 AM 69.1 °F - 68.0 °F 96% 29.95 in 0.5 mi Calm Calm - N/A Fog Fog
6:28 AM 66.9 °F - 66.9 °F 100% 29.95 in 1.5 mi Calm Calm - N/A   Mostly Cloudy
6:30 AM 66.9 °F - 66.9 °F 100% 29.95 in 4.0 mi Calm Calm - N/A   Mostly Cloudy
6:39 AM 66.9 °F - 66.9 °F 100% 29.95 in 2.5 mi SSE 3.5 mph - N/A   Scattered Clouds
6:54 AM 68.0 °F - 68.0 °F 100% 29.95 in 7.0 mi Calm Calm - N/A   Partly Cloudy
7:54 AM 73.9 °F - 71.1 °F 91% 29.97 in 10.0 mi Calm Calm - N/A   Clear
8:54 AM 79.0 °F - 71.1 °F 77% 29.99 in 10.0 mi WSW 3.5 mph - N/A   Clear
9:54 AM 82.0 °F 86.7 °F 72.0 °F 71% 29.98 in 10.0 mi WSW 9.2 mph - N/A   Clear
10:54 AM 84.9 °F 91.4 °F 73.0 °F 67% 29.98 in 10.0 mi SW 11.5 mph - N/A   Clear
11:54 AM 88.0 °F 95.6 °F 73.0 °F 61% 29.98 in 10.0 mi SW 9.2 mph - N/A   Clear
12:54 PM 89.1 °F 97.0 °F 73.0 °F 59% 29.96 in 10.0 mi SW 6.9 mph - N/A   Clear
1:54 PM 91.0 °F 100.4 °F 73.9 °F 57% 29.94 in 10.0 mi SW 10.4 mph - N/A   Clear
2:54 PM 91.9 °F 101.3 °F 73.9 °F 55% 29.92 in 10.0 mi SW 10.4 mph - N/A   Clear
3:54 PM 93.0 °F 101.9 °F 73.0 °F 52% 29.90 in 10.0 mi SSW 11.5 mph - N/A   Clear
4:54 PM 93.0 °F 101.9 °F 73.0 °F 52% 29.89 in 10.0 mi SW 9.2 mph - N/A   Clear
5:54 PM 93.0 °F 103.2 °F 73.9 °F 54% 29.88 in 10.0 mi SSW 8.1 mph - N/A   Clear
6:54 PM 88.0 °F 97.5 °F 75.0 °F 65% 29.88 in 10.0 mi SW 4.6 mph - N/A   Clear
7:54 PM 82.0 °F 90.2 °F 77.0 °F 85% 29.88 in 10.0 mi NE 3.5 mph - N/A   Clear
8:54 PM 80.1 °F 85.8 °F 77.0 °F 90% 29.89 in 10.0 mi ENE 3.5 mph - N/A   Clear
9:54 PM 78.1 °F - 75.0 °F 90% 29.91 in 10.0 mi East 5.8 mph - N/A   Clear
10:54 PM 79.0 °F - 75.9 °F 90% 29.92 in 10.0 mi ENE 4.6 mph - N/A   Clear
11:54 PM 78.1 °F - 75.0 °F 90% 29.92 in 10.0 mi Calm Calm - N/A   Clear