Weather History for St. Louis, MO

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Sunday, May 12, 2013

  Actual Average Record
Temperature  
Mean Temperature 53 °F 66 °F  
Max Temperature 63 °F 75 °F 92 °F (1956)
Min Temperature 42 °F 56 °F 39 °F (1960)
Degree Days  
Heating Degree Days 12 3  
Month to date heating degree days 81 43  
Since 1 July heating degree days 4466 4499  
Cooling Degree Days 0 3  
Month to date cooling degree days 22 30  
Year to date cooling degree days 56 76  
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 30 °F    
Average Humidity 47    
Maximum Humidity 67    
Minimum Humidity 27    
Precipitation  
Precipitation 0.00 in 0.15 in 2.18 in (2002)
Month to date precipitation 2.69 1.74  
Year to date precipitation 19.70 13.39  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2013)
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 27.9 17.7  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.19 in    
Wind  
Wind Speed 7 mph (WNW)    
Max Wind Speed 18 mph    
Max Gust Speed 23 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

May. 12, 2013 Rise Set
Actual Time 5:51 AM CDT 8:04 PM CDT
Civil Twilight 5:22 AM CDT 8:34 PM CDT
Nautical Twilight 4:45 AM CDT 9:10 PM CDT
Astronomical Twilight 4:06 AM CDT 9:50 PM CDT
Moon 7:47 AM CDT (5/12) 10:31 PM CDT (5/12)
Length of Visible Light 15h 12m
Length of Day
14h 12m
Waxing Crescent, 7% of the Moon is Illuminated
May 12
Waxing Crescent
May 17
First Quarter
May 24
Full
May 31
Last Quarter
Jun 8
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 51.1 °F - 28.0 °F 41% 30.17 in 10.0 mi NNW 9.2 mph - N/A   Clear
1:51 AM 50.0 °F - 27.0 °F 41% 30.17 in 10.0 mi NW 6.9 mph - N/A   Clear
2:51 AM 46.0 °F 43.1 °F 28.9 °F 51% 30.16 in 10.0 mi WNW 5.8 mph - N/A   Clear
3:51 AM 45.0 °F 41.8 °F 30.0 °F 56% 30.17 in 10.0 mi WNW 5.8 mph - N/A   Clear
4:51 AM 43.0 °F 40.3 °F 32.0 °F 65% 30.19 in 10.0 mi West 4.6 mph - N/A   Clear
5:51 AM 43.0 °F 41.3 °F 32.0 °F 65% 30.20 in 10.0 mi WNW 3.5 mph - N/A   Clear
6:51 AM 46.0 °F 43.1 °F 35.1 °F 66% 30.21 in 10.0 mi West 5.8 mph - N/A   Clear
7:51 AM 50.0 °F - 33.1 °F 52% 30.22 in 10.0 mi WNW 6.9 mph - N/A   Clear
8:51 AM 53.1 °F - 32.0 °F 45% 30.23 in 10.0 mi NNW 8.1 mph - N/A   Clear
9:51 AM 55.9 °F - 28.9 °F 36% 30.24 in 10.0 mi NW 8.1 mph - N/A   Partly Cloudy
10:51 AM 57.0 °F - 25.0 °F 29% 30.24 in 10.0 mi NW 13.8 mph 21.9 mph N/A   Partly Cloudy
11:51 AM 59.0 °F - 28.0 °F 31% 30.24 in 10.0 mi NW 13.8 mph 19.6 mph N/A   Clear
12:51 PM 60.1 °F - 27.0 °F 28% 30.22 in 10.0 mi WNW 8.1 mph - N/A   Partly Cloudy
1:51 PM 60.1 °F - 28.9 °F 31% 30.22 in 10.0 mi NW 8.1 mph 18.4 mph N/A   Partly Cloudy
2:51 PM 62.1 °F - 28.9 °F 29% 30.20 in 10.0 mi West 13.8 mph 19.6 mph N/A   Partly Cloudy
3:51 PM 62.1 °F - 28.0 °F 28% 30.18 in 10.0 mi West 16.1 mph 20.7 mph N/A   Partly Cloudy
4:51 PM 63.0 °F - 28.0 °F 27% 30.17 in 10.0 mi WNW 15.0 mph 21.9 mph N/A   Scattered Clouds
5:51 PM 62.1 °F - 28.9 °F 29% 30.17 in 10.0 mi West 5.8 mph 16.1 mph N/A   Scattered Clouds
6:51 PM 60.1 °F - 27.0 °F 28% 30.16 in 10.0 mi NW 10.4 mph - N/A   Scattered Clouds
7:51 PM 55.9 °F - 30.0 °F 37% 30.16 in 10.0 mi WNW 5.8 mph - N/A   Mostly Cloudy
8:51 PM 55.9 °F - 28.9 °F 36% 30.17 in 10.0 mi NNW 3.5 mph - N/A   Scattered Clouds
9:51 PM 54.0 °F - 30.0 °F 40% 30.19 in 10.0 mi Calm Calm - N/A   Partly Cloudy
10:51 PM 51.1 °F - 33.1 °F 50% 30.19 in 10.0 mi Calm Calm - N/A   Clear
11:51 PM 48.0 °F - 34.0 °F 58% 30.19 in 10.0 mi WSW 3.5 mph - N/A   Clear