Weather History for St. Louis, MO

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Sunday, December 30, 2012

  Actual Average Record
Temperature  
Mean Temperature 32 °F 32 °F  
Max Temperature 43 °F 40 °F 72 °F (1965)
Min Temperature 21 °F 24 °F -5 °F (1880)
Degree Days  
Heating Degree Days 33 33  
Month to date heating degree days 690 906  
Since 1 July heating degree days 1569 1732  
Cooling Degree Days 0 0  
Month to date cooling degree days 8 0  
Year to date cooling degree days 2217 1646  
Moisture  
Dew Point 20 °F    
Average Humidity 60    
Maximum Humidity 77    
Minimum Humidity 43    
Precipitation  
Precipitation 0.00 in 0.08 in 0.98 in (1973)
Month to date precipitation 1.78 2.75  
Year to date precipitation 32.08 40.87  
Snow  
Snow 0.00 in 0.10 in 10.50 in (1973)
Month to date snowfall 0.9 4.2  
Since 1 July snowfall 0.9 4.9  
Snow Depth T in    
Sea Level Pressure  
Sea Level Pressure 30.37 in    
Wind  
Wind Speed 7 mph (SSW)    
Max Wind Speed 15 mph    
Max Gust Speed 20 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Dec. 30, 2012 Rise Set
Actual Time 7:19 AM CST 4:49 PM CST
Civil Twilight 6:49 AM CST 5:19 PM CST
Nautical Twilight 6:16 AM CST 5:52 PM CST
Astronomical Twilight 5:43 AM CST 6:24 PM CST
Moon 7:18 PM CST (12/30) 8:29 AM CST (12/30)
Length of Visible Light 10h 29m
Length of Day
9h 29m
Waning Gibbous, 95% of the Moon is Illuminated
Dec 30
Waning Gibbous
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

Hourly Weather History & Observations

Time (CST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:51 AM 23.0 °F - 15.1 °F 72% 30.37 in 10.0 mi Calm Calm - N/A   Clear
1:51 AM 23.0 °F 17.0 °F 15.1 °F 72% 30.41 in 9.0 mi SW 4.6 mph - N/A   Clear
2:51 AM 23.0 °F 18.4 °F 15.1 °F 72% 30.42 in 9.0 mi SW 3.5 mph - N/A   Clear
3:51 AM 24.1 °F 18.2 °F 15.1 °F 69% 30.42 in 10.0 mi WSW 4.6 mph - N/A   Clear
4:51 AM 23.0 °F 15.8 °F 15.1 °F 72% 30.42 in 10.0 mi SW 5.8 mph - N/A   Clear
5:51 AM 24.8 °F 20.5 °F 15.8 °F 69% 30.39 in 10.0 mi WSW 3.5 mph - N/A   Partly Cloudy
6:51 AM 24.1 °F - 15.1 °F 69% 30.45 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:51 AM 23.0 °F - 15.1 °F 72% 30.44 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:51 AM 28.9 °F 23.9 °F 18.0 °F 64% 30.45 in 10.0 mi SW 4.6 mph - N/A   Mostly Cloudy
9:51 AM 33.1 °F 25.5 °F 19.0 °F 56% 30.47 in 10.0 mi SW 9.2 mph - N/A   Mostly Cloudy
10:51 AM 37.9 °F 34.4 °F 19.9 °F 48% 30.46 in 10.0 mi SSW 4.6 mph - N/A   Mostly Cloudy
11:51 AM 39.9 °F 35.8 °F 21.0 °F 47% 30.42 in 10.0 mi South 5.8 mph - N/A   Overcast
12:51 PM 42.1 °F 38.4 °F 21.9 °F 45% 30.39 in 10.0 mi SSW 5.8 mph - N/A   Overcast
1:51 PM 42.1 °F 37.7 °F 21.0 °F 43% 30.35 in 10.0 mi SSW 6.9 mph - N/A   Overcast
2:51 PM 39.9 °F 33.4 °F 25.0 °F 55% 30.35 in 10.0 mi ESE 10.4 mph - N/A   Overcast
3:51 PM 39.9 °F 32.5 °F 24.1 °F 53% 30.36 in 10.0 mi South 12.7 mph - N/A   Overcast
4:51 PM 37.0 °F 29.3 °F 25.0 °F 62% 30.33 in 10.0 mi SSE 11.5 mph - N/A   Overcast
5:51 PM 37.0 °F 29.8 °F 24.1 °F 59% 30.33 in 10.0 mi South 10.4 mph - N/A   Overcast
6:51 PM 36.0 °F 28.0 °F 24.1 °F 62% 30.31 in 10.0 mi South 11.5 mph - N/A   Mostly Cloudy
7:51 PM 35.1 °F 27.9 °F 25.0 °F 67% 30.32 in 10.0 mi SSW 9.2 mph - N/A   Mostly Cloudy
8:51 PM 35.1 °F 27.4 °F 25.0 °F 67% 30.29 in 10.0 mi South 10.4 mph - N/A   Overcast
9:51 PM 35.6 °F 29.9 °F 24.8 °F 65% 30.24 in 10.0 mi South 6.9 mph - N/A   Overcast
10:51 PM 35.1 °F 27.9 °F 24.1 °F 64% 30.26 in 10.0 mi South 9.2 mph - N/A   Overcast
11:51 PM 35.1 °F 29.3 °F 21.9 °F 59% 30.24 in 10.0 mi SSW 6.9 mph - N/A   Overcast