Weather History for St. Louis, MO

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Sunday, April 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 53 °F 59 °F  
Max Temperature 63 °F 69 °F 89 °F (1965)
Min Temperature 43 °F 49 °F 32 °F (1904)
Degree Days  
Heating Degree Days 12 7  
Month to date heating degree days 228 217  
Since 1 July heating degree days 4298 4403  
Cooling Degree Days 0 2  
Month to date cooling degree days 24 24  
Year to date cooling degree days 24 31  
Growing Degree Days 3 (Base 50)    
Moisture  
Dew Point 34 °F    
Average Humidity 53    
Maximum Humidity 67    
Minimum Humidity 39    
Precipitation  
Precipitation 0.00 in 0.12 in 1.75 in (1984)
Month to date precipitation 4.52 2.53  
Year to date precipitation 15.86 10.49  
Snow  
Snow 0.00 in 0.00 in T in (1918)
Month to date snowfall T 0.4  
Since 1 July snowfall 27.9 17.7  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.35 in    
Wind  
Wind Speed 13 mph (ESE)    
Max Wind Speed 18 mph    
Max Gust Speed 22 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Apr. 21, 2013 Rise Set
Actual Time 6:16 AM CDT 7:44 PM CDT
Civil Twilight 5:48 AM CDT 8:12 PM CDT
Nautical Twilight 5:15 AM CDT 8:46 PM CDT
Astronomical Twilight 4:39 AM CDT 9:21 PM CDT
Moon 3:32 PM CDT (4/21) 3:35 AM CDT (4/21)
Length of Visible Light 14h 23m
Length of Day
13h 28m
Waxing Gibbous, 80% of the Moon is Illuminated
Apr 21
Waxing Gibbous
Apr 25
Full
May 2
Last Quarter
May 9
New
May 17
First Quarter

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 46.0 °F 40.6 °F 30.9 °F 56% 30.35 in 10.0 mi East 11.5 mph - N/A   Mostly Cloudy
1:51 AM 45.0 °F 40.1 °F 32.0 °F 60% 30.35 in 10.0 mi ESE 9.2 mph - N/A   Mostly Cloudy
2:51 AM 45.0 °F 39.3 °F 32.0 °F 60% 30.36 in 10.0 mi ESE 11.5 mph - N/A   Mostly Cloudy
3:51 AM 43.0 °F 37.7 °F 32.0 °F 65% 30.37 in 10.0 mi ESE 9.2 mph - N/A   Mostly Cloudy
4:51 AM 44.1 °F 38.6 °F 32.0 °F 63% 30.38 in 10.0 mi ESE 10.4 mph - N/A   Mostly Cloudy
5:51 AM 43.0 °F 36.4 °F 32.0 °F 65% 30.39 in 10.0 mi ESE 12.7 mph - N/A   Mostly Cloudy
6:51 AM 43.0 °F 36.4 °F 30.9 °F 62% 30.42 in 10.0 mi ESE 12.7 mph - N/A   Mostly Cloudy
7:51 AM 44.1 °F 36.5 °F 30.0 °F 58% 30.43 in 10.0 mi ESE 17.3 mph - N/A   Mostly Cloudy
8:51 AM 46.9 °F - 30.9 °F 54% 30.43 in 10.0 mi SE 13.8 mph - N/A   Mostly Cloudy
9:51 AM 50.0 °F - 32.0 °F 50% 30.43 in 10.0 mi SE 15.0 mph - N/A   Mostly Cloudy
10:51 AM 52.0 °F - 33.1 °F 49% 30.42 in 10.0 mi SSE 11.5 mph - N/A   Mostly Cloudy
11:51 AM 55.0 °F - 35.1 °F 47% 30.40 in 10.0 mi SE 12.7 mph - N/A   Mostly Cloudy
12:51 PM 57.9 °F - 36.0 °F 44% 30.38 in 10.0 mi SE 15.0 mph 19.6 mph N/A   Mostly Cloudy
1:51 PM 62.1 °F - 37.0 °F 39% 30.34 in 10.0 mi SE 15.0 mph 20.7 mph N/A   Mostly Cloudy
2:51 PM 62.1 °F - 37.0 °F 39% 30.32 in 10.0 mi ESE 10.4 mph - N/A   Mostly Cloudy
3:51 PM 63.0 °F - 37.0 °F 38% 30.28 in 10.0 mi SE 12.7 mph - N/A   Mostly Cloudy
4:51 PM 62.1 °F - 39.0 °F 43% 30.27 in 10.0 mi ESE 15.0 mph - N/A   Mostly Cloudy
5:51 PM 62.1 °F - 39.0 °F 43% 30.27 in 10.0 mi ESE 13.8 mph - N/A   Mostly Cloudy
6:51 PM 60.1 °F - 37.9 °F 44% 30.26 in 10.0 mi East 15.0 mph - N/A   Mostly Cloudy
7:51 PM 59.0 °F - 39.0 °F 48% 30.27 in 10.0 mi ESE 12.7 mph - N/A   Mostly Cloudy
8:51 PM 57.9 °F - 37.9 °F 47% 30.29 in 10.0 mi ESE 10.4 mph - N/A   Mostly Cloudy
9:51 PM 57.0 °F - 36.0 °F 45% 30.30 in 10.0 mi ESE 13.8 mph - N/A   Scattered Clouds
10:51 PM 57.0 °F - 35.1 °F 44% 30.29 in 10.0 mi SE 12.7 mph - N/A   Mostly Cloudy
11:51 PM 53.1 °F - 35.1 °F 50% 30.29 in 10.0 mi SE 8.1 mph - N/A   Scattered Clouds