Weather History for St. Louis, MO

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Monday, May 20, 2013

  Actual Average Record
Temperature  
Mean Temperature 73 °F 68 °F  
Max Temperature 83 °F 77 °F 93 °F (1902)
Min Temperature 63 °F 58 °F 41 °F (1981)
Degree Days  
Heating Degree Days 0 2  
Month to date heating degree days 87 62  
Since 1 July heating degree days 4472 4518  
Cooling Degree Days 8 5  
Month to date cooling degree days 100 64  
Year to date cooling degree days 134 110  
Growing Degree Days 23 (Base 50)    
Moisture  
Dew Point 64 °F    
Average Humidity 71    
Maximum Humidity 87    
Minimum Humidity 54    
Precipitation  
Precipitation 1.22 in 0.15 in 1.66 in (1947)
Month to date precipitation 4.18 2.95  
Year to date precipitation 21.19 14.60  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2012)
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 29.82 in    
Wind  
Wind Speed 13 mph (South)    
Max Wind Speed 38 mph    
Max Gust Speed 48 mph    
Visibility 8 miles    
Events Rain , Thunderstorm    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

May. 20, 2013 Rise Set
Actual Time 5:45 AM CDT 8:11 PM CDT
Civil Twilight 5:14 AM CDT 8:41 PM CDT
Nautical Twilight 4:37 AM CDT 9:19 PM CDT
Astronomical Twilight 3:55 AM CDT 10:01 PM CDT
Moon 3:22 PM CDT (5/20) 2:36 AM CDT (5/20)
Length of Visible Light 15h 27m
Length of Day
14h 26m
Waxing Gibbous, 75% of the Moon is Illuminated
May 20
Waxing Gibbous
May 24
Full
May 31
Last Quarter
Jun 8
New
Jun 16
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
12:51 AM 79.0 °F - 66.0 °F 64% 29.74 in 10.0 mi South 13.8 mph 23.0 mph N/A   Overcast
1:51 AM 78.1 °F - 66.9 °F 68% 29.72 in 9.0 mi South 13.8 mph 20.7 mph N/A   Mostly Cloudy
2:51 AM 78.1 °F - 66.9 °F 68% 29.73 in 10.0 mi SSW 15.0 mph 19.6 mph N/A   Overcast
3:48 AM 69.8 °F - 57.2 °F 64% 29.87 in 8.0 mi WNW 27.6 mph 44.9 mph 0.00 in Rain Light Rain
3:51 AM 68.0 °F - 57.9 °F 70% 29.86 in 1.5 mi WNW 32.2 mph 43.7 mph 0.00 in Rain , Thunderstorm Thunderstorms and Rain
3:57 AM 64.4 °F - 60.8 °F 88% 29.90 in 3.0 mi WNW 16.1 mph 39.1 mph 0.06 in Rain , Thunderstorm Heavy Thunderstorms and Rain
4:04 AM 64.4 °F - 60.8 °F 88% 29.89 in 6.0 mi WNW 12.7 mph 24.2 mph 0.10 in Rain , Thunderstorm Light Thunderstorms and Rain
4:16 AM 64.4 °F - 60.8 °F 88% 29.89 in 9.0 mi NW 6.9 mph 17.3 mph 0.10 in Rain Light Rain
4:51 AM 64.9 °F - 60.1 °F 84% 29.85 in 10.0 mi Calm Calm - 0.10 in Rain Light Rain
5:51 AM 64.0 °F - 61.0 °F 90% 29.81 in 10.0 mi ESE 10.4 mph - 0.00 in   Overcast
6:40 AM 64.4 °F - 60.8 °F 88% 29.89 in 7.0 mi South 6.9 mph - 0.00 in Rain , Thunderstorm Light Thunderstorms and Rain
6:51 AM 64.9 °F - 62.1 °F 90% 29.87 in 7.0 mi SW 8.1 mph - 0.01 in Rain , Thunderstorm Light Thunderstorms and Rain
7:18 AM 64.4 °F - 60.8 °F 88% 29.88 in 8.0 mi SE 10.4 mph - 0.01 in Rain Light Rain
7:51 AM 64.9 °F - 61.0 °F 87% 29.86 in 10.0 mi SSE 9.2 mph - 0.02 in   Mostly Cloudy
8:51 AM 66.9 °F - 62.1 °F 84% 29.86 in 10.0 mi SE 12.7 mph - N/A   Overcast
9:51 AM 69.1 °F - 64.0 °F 84% 29.85 in 10.0 mi SSE 10.4 mph - 0.08 in Rain Light Rain
10:51 AM 73.9 °F - 63.0 °F 68% 29.81 in 10.0 mi SSE 17.3 mph - 0.00 in   Scattered Clouds
11:51 AM 79.0 °F - 61.0 °F 54% 29.82 in 10.0 mi SSE 15.0 mph 19.6 mph N/A   Scattered Clouds
12:51 PM 80.6 °F 82.3 °F 64.4 °F 58% 29.86 in 10.0 mi South 11.5 mph 20.7 mph N/A   Mostly Cloudy
1:51 PM 82.0 °F 84.5 °F 66.9 °F 60% 29.82 in 10.0 mi South 15.0 mph 24.2 mph N/A   Mostly Cloudy
2:51 PM 80.1 °F 82.1 °F 66.0 °F 62% 29.81 in 10.0 mi SSW 15.0 mph 25.3 mph N/A   Mostly Cloudy
3:51 PM 80.6 °F 82.7 °F 66.2 °F 61% 29.82 in 10.0 mi South 11.5 mph - N/A   Overcast
4:51 PM 78.8 °F - 66.2 °F 65% 29.80 in 10.0 mi SSE 17.3 mph 20.7 mph N/A   Overcast
5:51 PM 78.1 °F - 68.0 °F 71% 29.75 in 7.0 mi SSE 10.4 mph - 0.00 in   Overcast
6:51 PM 78.1 °F - 68.0 °F 71% 29.72 in 7.0 mi SSE 12.7 mph - N/A   Overcast
7:41 PM 78.8 °F - 68.0 °F 69% 29.73 in 7.0 mi SSE 10.4 mph - N/A Thunderstorm Thunderstorm
7:51 PM 79.0 °F - 68.0 °F 69% 29.72 in 7.0 mi SSE 9.2 mph - N/A Thunderstorm Thunderstorm
8:51 PM 79.0 °F - 68.0 °F 69% 29.67 in 8.0 mi SE 10.4 mph - 0.00 in Thunderstorm Thunderstorm
9:51 PM 69.1 °F - 64.0 °F 84% 29.78 in 5.0 mi NNW 27.6 mph 46.0 mph 0.09 in Rain , Thunderstorm Light Thunderstorms and Rain
10:00 PM 66.2 °F - 62.6 °F 88% 29.83 in 2.0 mi WNW 24.2 mph 38.0 mph 0.01 in Rain , Thunderstorm Thunderstorms and Rain
10:05 PM 64.4 °F - 62.6 °F 94% 29.86 in 1.0 mi WNW 32.2 mph 48.3 mph 0.12 in Rain , Thunderstorm Heavy Thunderstorms and Rain
10:28 PM 64.4 °F - 62.6 °F 94% 29.86 in 4.0 mi WSW 11.5 mph 23.0 mph 0.61 in Rain , Thunderstorm Light Thunderstorms and Rain
10:42 PM 64.4 °F - 60.8 °F 88% 29.85 in 5.0 mi SW 4.6 mph - 0.67 in Rain , Thunderstorm Light Thunderstorms and Rain
10:51 PM 64.0 °F - 61.0 °F 90% 29.83 in 4.0 mi WSW 5.8 mph - 0.71 in Rain , Thunderstorm Light Thunderstorms and Rain
11:37 PM 64.4 °F - 62.6 °F 94% 29.86 in 4.0 mi South 9.2 mph - 0.13 in Rain , Thunderstorm Light Thunderstorms and Rain
11:51 PM 64.9 °F - 62.1 °F 90% 29.82 in 5.0 mi SSE 11.5 mph - 0.18 in Rain , Thunderstorm Light Thunderstorms and Rain