Weather History for St. Louis, MO

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Friday, April 12, 2013

  Actual Average Record
Temperature  
Mean Temperature 42 °F 56 °F  
Max Temperature 46 °F 66 °F 89 °F (1971)
Min Temperature 38 °F 46 °F 24 °F (1940)
Degree Days  
Heating Degree Days 23 10  
Month to date heating degree days 134 141  
Since 1 July heating degree days 4204 4327  
Cooling Degree Days 0 1  
Month to date cooling degree days 21 12  
Year to date cooling degree days 21 19  
Moisture  
Dew Point 29 °F    
Average Humidity 62    
Maximum Humidity 70    
Minimum Humidity 53    
Precipitation  
Precipitation 0.00 in 0.11 in 2.00 in (1909)
Month to date precipitation 1.14 1.43  
Year to date precipitation 12.48 9.39  
Snow  
Snow 0.00 in 0.10 in 0.10 in (1957)
Month to date snowfall T 0.3  
Since 1 July snowfall 27.9 17.6  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.88 in    
Wind  
Wind Speed 12 mph (West)    
Max Wind Speed 22 mph    
Max Gust Speed 28 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Apr. 12, 2013 Rise Set
Actual Time 6:29 AM CDT 7:35 PM CDT
Civil Twilight 6:01 AM CDT 8:03 PM CDT
Nautical Twilight 5:29 AM CDT 8:35 PM CDT
Astronomical Twilight 4:55 AM CDT 9:09 PM CDT
Moon 7:40 AM CDT (4/12) 10:05 PM CDT (4/12)
Length of Visible Light 14h 01m
Length of Day
13h 06m
Waxing Crescent, 5% of the Moon is Illuminated
Apr 12
Waxing Crescent
Apr 18
First Quarter
Apr 25
Full
May 2
Last Quarter
May 9
New

Hourly Weather History & Observations

Time (CDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:51 AM 42.1 °F 37.1 °F 28.9 °F 60% 29.77 in 10.0 mi SW 8.1 mph - N/A   Overcast
1:51 AM 42.1 °F 37.1 °F 30.0 °F 62% 29.75 in 10.0 mi WSW 8.1 mph - N/A   Mostly Cloudy
2:51 AM 42.1 °F 36.1 °F 30.0 °F 62% 29.74 in 10.0 mi WSW 10.4 mph - N/A   Mostly Cloudy
3:51 AM 39.9 °F 33.4 °F 28.9 °F 65% 29.75 in 10.0 mi West 10.4 mph - N/A   Partly Cloudy
4:51 AM 39.0 °F 32.8 °F 28.9 °F 67% 29.76 in 10.0 mi WSW 9.2 mph - N/A   Partly Cloudy
5:51 AM 37.9 °F 31.5 °F 28.0 °F 68% 29.77 in 10.0 mi West 9.2 mph - N/A   Partly Cloudy
6:51 AM 37.9 °F 30.9 °F 28.0 °F 68% 29.80 in 10.0 mi WSW 10.4 mph - N/A   Partly Cloudy
7:51 AM 39.9 °F 31.4 °F 28.9 °F 65% 29.81 in 10.0 mi West 16.1 mph 23.0 mph N/A   Scattered Clouds
8:51 AM 43.0 °F 35.4 °F 28.9 °F 58% 29.81 in 10.0 mi West 16.1 mph - N/A   Scattered Clouds
9:51 AM 42.1 °F 34.2 °F 28.0 °F 58% 29.83 in 10.0 mi West 16.1 mph 21.9 mph N/A   Mostly Cloudy
10:51 AM 43.0 °F 34.8 °F 28.0 °F 56% 29.86 in 10.0 mi West 18.4 mph - N/A   Overcast
11:51 AM 43.0 °F 35.1 °F 28.0 °F 56% 29.89 in 10.0 mi West 17.3 mph - N/A   Overcast
12:51 PM 43.0 °F 34.5 °F 28.0 °F 56% 29.91 in 10.0 mi West 19.6 mph - N/A   Overcast
1:51 PM 45.0 °F 37.1 °F 28.9 °F 53% 29.91 in 10.0 mi West 19.6 mph 25.3 mph N/A   Overcast
2:51 PM 45.0 °F 37.9 °F 28.9 °F 53% 29.94 in 10.0 mi West 16.1 mph - N/A   Overcast
3:51 PM 45.0 °F 37.4 °F 28.9 °F 53% 29.94 in 10.0 mi West 18.4 mph - N/A   Overcast
4:51 PM 45.0 °F 38.9 °F 30.0 °F 56% 29.96 in 10.0 mi West 12.7 mph - N/A   Overcast
5:51 PM 45.0 °F 38.2 °F 30.0 °F 56% 29.97 in 10.0 mi West 15.0 mph - N/A   Overcast
6:51 PM 45.0 °F 39.3 °F 30.0 °F 56% 29.99 in 10.0 mi WNW 11.5 mph - N/A   Overcast
7:51 PM 45.0 °F 38.9 °F 30.0 °F 56% 29.99 in 10.0 mi WNW 12.7 mph - N/A   Overcast
8:51 PM 45.0 °F 39.3 °F 30.0 °F 56% 30.01 in 10.0 mi West 11.5 mph - N/A   Overcast
9:51 PM 44.1 °F 40.1 °F 30.0 °F 58% 30.02 in 10.0 mi West 6.9 mph - N/A   Overcast
11:51 PM 42.1 °F - 30.0 °F 62% 30.04 in 10.0 mi Calm Calm - N/A   Scattered Clouds