Weather History for St. Charles, MO

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Sunday, August 18, 2013

  Actual Average (KSTL) Record (KSTL)
Temperature  
Mean Temperature 80 °F 79 °F  
Max Temperature 105 °F 88 °F 106 °F (1936)
Min Temperature 61 °F 70 °F 54 °F (1963)
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 15 14  
Month to date cooling degree days 260  
Year to date cooling degree days 1235  
Since 1 June cooling degree days 1061  
Growing Degree Days 30 (Base 50)    
Moisture  
Dew Point 62 °F    
Average Humidity 63    
Maximum Humidity 87    
Minimum Humidity 30    
Precipitation  
Precipitation 0.00 in 0.09 in 2.10 in (1902)
Month to date precipitation 1.80  
Year to date precipitation 26.56  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2012)
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 30.12 in    
Wind  
Wind Speed 3 mph (NE)    
Max Wind Speed 8 mph    
Max Gust Speed -    
Visibility 9 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Aug. 18, 2013 Rise Set
Actual Time 6:18 AM CDT 7:52 PM CDT
Civil Twilight 5:49 AM CDT 8:20 PM CDT
Nautical Twilight 5:15 AM CDT 8:54 PM CDT
Astronomical Twilight 4:39 AM CDT 9:30 PM CDT
Moon 5:57 PM CDT (8/18) 3:28 AM CDT (8/18)
Length of Visible Light 14h 30m
Length of Day
13h 33m
Waxing Gibbous, 92% of the Moon is Illuminated
Aug 18
Waxing Gibbous
Aug 20
Full
Aug 28
Last Quarter
Sep 5
New
Sep 12
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 64.0 °F - 59.0 °F 84% 30.12 in 9.0 mi ENE 4.6 mph - N/A   Mostly Cloudy
1:54 AM 66.0 °F - 59.0 °F 78% 30.12 in 10.0 mi Calm Calm - N/A   Clear
2:54 AM 64.0 °F - 59.0 °F 84% 30.11 in 9.0 mi North 3.5 mph - N/A   Overcast
3:54 AM 63.0 °F - 59.0 °F 87% 30.11 in 9.0 mi Calm Calm - N/A   Partly Cloudy
4:54 AM 63.0 °F - 59.0 °F 87% 30.12 in 9.0 mi Calm Calm - N/A   Clear
5:54 AM 61.0 °F - 57.0 °F 87% 30.13 in 8.0 mi Calm Calm - N/A   Clear
6:54 AM 63.0 °F - 59.0 °F 87% 30.14 in 7.0 mi NNE 4.6 mph - N/A   Overcast
7:54 AM 64.9 °F - 60.1 °F 84% 30.15 in 8.0 mi NNW 3.5 mph - N/A   Mostly Cloudy
8:54 AM 69.1 °F - 61.0 °F 75% 30.17 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
9:54 AM 75.0 °F - 62.1 °F 64% 30.17 in 8.0 mi Calm Calm - N/A   Overcast
10:54 AM 84.0 °F 84.9 °F 63.0 °F 49% 30.16 in 9.0 mi North 3.5 mph - N/A   Partly Cloudy
11:54 AM 89.1 °F 89.0 °F 61.0 °F 39% 30.15 in 10.0 mi Variable 3.5 mph - N/A   Clear
12:54 PM 95.0 °F 95.6 °F 62.1 °F 33% 30.14 in 10.0 mi NE 8.1 mph - N/A   Clear
1:54 PM 93.0 °F 93.8 °F 62.1 °F 36% 30.12 in 10.0 mi NE 5.8 mph - N/A   Overcast
2:54 PM 91.0 °F 91.9 °F 63.0 °F 39% 30.10 in 10.0 mi NNE 4.6 mph - N/A   Clear
3:54 PM 95.0 °F 95.6 °F 62.1 °F 33% 30.09 in 10.0 mi NNE 4.6 mph - N/A   Clear
4:54 PM 99.0 °F 100.5 °F 63.0 °F 30% 30.08 in 10.0 mi East 6.9 mph - N/A   Partly Cloudy
5:54 PM 99.0 °F 101.7 °F 64.0 °F 32% 30.07 in 10.0 mi East 4.6 mph - N/A   Partly Cloudy
6:54 PM 86.0 °F 88.2 °F 66.0 °F 51% 30.06 in 10.0 mi NE 3.5 mph - N/A   Clear
7:54 PM 79.0 °F - 68.0 °F 69% 30.08 in 8.0 mi NNE 3.5 mph - N/A   Clear
8:54 PM 75.9 °F - 66.0 °F 71% 30.09 in 8.0 mi Calm Calm - N/A   Clear
9:54 PM 75.9 °F - 64.9 °F 69% 30.09 in 7.0 mi Calm Calm - N/A   Clear
10:54 PM 82.9 °F 84.4 °F 64.0 °F 53% 30.10 in 6.0 mi SW 3.5 mph - N/A   Haze
11:54 PM 70.0 °F - 64.0 °F 81% 30.10 in 6.0 mi Calm Calm - N/A   Haze