Weather History for St. Louis, MO

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Monday, May 12, 2014

  Actual Average Record
Temperature  
Mean Temperature 80 °F 66 °F  
Max Temperature 89 °F 75 °F 92 °F (1956)
Min Temperature 70 °F 56 °F 39 °F (1960)
Degree Days  
Heating Degree Days 0 3  
Month to date heating degree days 24 43  
Since 1 July heating degree days 4972 4499  
Cooling Degree Days 15 3  
Month to date cooling degree days 89 30  
Year to date cooling degree days 126 76  
Growing Degree Days 29 (Base 50)    
Moisture  
Dew Point 67 °F    
Average Humidity 70    
Maximum Humidity 90    
Minimum Humidity 50    
Precipitation  
Precipitation 0.17 in 0.15 in 2.18 in (2002)
Month to date precipitation 0.68 1.74  
Year to date precipitation 13.76 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 28.8 17.7  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.87 in    
Wind  
Wind Speed 13 mph (SSW)    
Max Wind Speed 28 mph    
Max Gust Speed 35 mph    
Visibility 9 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

May. 12, 2014 Rise Set
Actual Time 5:52 AM CDT 8:04 PM CDT
Civil Twilight 5:22 AM CDT 8:33 PM CDT
Nautical Twilight 4:46 AM CDT 9:10 PM CDT
Astronomical Twilight 4:06 AM CDT 9:50 PM CDT
Moon 6:03 PM CDT (5/12) 4:29 AM CDT (5/12)
Length of Visible Light 15h 11m
Length of Day
14h 12m
Waxing Gibbous, 95% of the Moon is Illuminated
May 12
Waxing Gibbous
May 14
Full
May 21
Last Quarter
May 28
New
Jun 5
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 77.0 °F - 68.0 °F 74% 29.87 in 10.0 mi SSE 9.2 mph - N/A   Scattered Clouds
1:51 AM 75.9 °F - 68.0 °F 76% 29.85 in 10.0 mi SSE 10.4 mph - N/A   Mostly Cloudy
2:51 AM 75.9 °F - 68.0 °F 76% 29.84 in 10.0 mi South 6.9 mph - N/A   Mostly Cloudy
3:51 AM 77.0 °F - 66.9 °F 71% 29.83 in 10.0 mi South 15.0 mph 20.7 mph N/A   Mostly Cloudy
4:51 AM 75.9 °F - 66.9 °F 74% 29.82 in 10.0 mi South 11.5 mph 25.3 mph N/A   Mostly Cloudy
5:51 AM 75.0 °F - 66.0 °F 73% 29.86 in 10.0 mi South 10.4 mph 19.6 mph N/A   Overcast
6:31 AM 75.2 °F - 66.2 °F 73% 29.92 in 10.0 mi South 9.2 mph - N/A   Overcast
6:51 AM 75.0 °F - 66.0 °F 73% 29.89 in 9.0 mi South 11.5 mph - N/A   Mostly Cloudy
7:34 AM 75.2 °F - 66.2 °F 73% 29.93 in 10.0 mi South 10.4 mph - N/A   Mostly Cloudy
7:51 AM 75.9 °F - 66.0 °F 71% 29.89 in 10.0 mi South 10.4 mph - N/A   Overcast
8:07 AM 75.2 °F - 66.2 °F 73% 29.93 in 10.0 mi South 11.5 mph - N/A   Overcast
8:51 AM 78.1 °F - 66.9 °F 68% 29.91 in 10.0 mi South 6.9 mph - N/A   Mostly Cloudy
9:51 AM 79.0 °F - 66.9 °F 66% 29.91 in 10.0 mi South 13.8 mph - N/A   Overcast
10:51 AM 82.9 °F 85.8 °F 68.0 °F 60% 29.90 in 10.0 mi SSW 17.3 mph 25.3 mph N/A   Overcast
11:51 AM 84.0 °F 87.0 °F 68.0 °F 58% 29.90 in 10.0 mi SSW 19.6 mph 32.2 mph N/A   Overcast
12:51 PM 84.9 °F 88.2 °F 68.0 °F 57% 29.88 in 10.0 mi South 16.1 mph 23.0 mph N/A   Overcast
1:51 PM 84.9 °F 87.6 °F 66.9 °F 55% 29.86 in 10.0 mi SSW 18.4 mph 26.5 mph N/A   Overcast
2:51 PM 87.1 °F 89.9 °F 66.9 °F 51% 29.83 in 10.0 mi South 15.0 mph 25.3 mph N/A   Mostly Cloudy
3:51 PM 87.1 °F 90.6 °F 68.0 °F 53% 29.81 in 10.0 mi SSE 18.4 mph 25.3 mph N/A   Mostly Cloudy
4:51 PM 87.1 °F 90.6 °F 68.0 °F 53% 29.81 in 10.0 mi South 16.1 mph 27.6 mph N/A   Mostly Cloudy
5:51 PM 84.0 °F 87.0 °F 68.0 °F 58% 29.82 in 10.0 mi South 20.7 mph 31.1 mph N/A   Mostly Cloudy
6:51 PM 81.0 °F 83.8 °F 68.0 °F 65% 29.79 in 10.0 mi South 21.9 mph 28.8 mph N/A   Mostly Cloudy
7:51 PM 80.1 °F 82.3 °F 66.9 °F 64% 29.82 in 10.0 mi SSW 18.4 mph 27.6 mph N/A   Overcast
8:51 PM 79.0 °F - 66.9 °F 66% 29.86 in 10.0 mi SSW 12.7 mph - N/A   Overcast
9:51 PM 79.0 °F - 68.0 °F 69% 29.87 in 10.0 mi SSW 8.1 mph - N/A   Overcast
10:09 PM 75.2 °F - 62.6 °F 65% 29.91 in 7.0 mi WNW 12.7 mph 23.0 mph 0.00 in Rain Light Rain
10:19 PM 73.4 °F - 64.4 °F 73% 29.92 in 8.0 mi NW 12.7 mph - 0.01 in Rain Light Rain
10:30 PM 71.6 °F - 64.4 °F 78% 29.92 in 3.0 mi WNW 6.9 mph - 0.05 in Rain Light Rain
10:51 PM 70.0 °F - 66.0 °F 87% 29.88 in 4.0 mi WNW 4.6 mph - 0.13 in Rain Light Rain
10:58 PM 69.8 °F - 66.2 °F 88% 29.91 in 7.0 mi Calm Calm - 0.00 in   Overcast
11:10 PM 69.8 °F - 66.2 °F 88% 29.93 in 4.0 mi Calm Calm - 0.01 in Rain Light Rain
11:23 PM 69.8 °F - 66.2 °F 88% 29.93 in 7.0 mi SW 4.6 mph - 0.01 in Rain Light Rain
11:51 PM 70.0 °F - 66.0 °F 87% 29.88 in 9.0 mi SSW 5.8 mph - 0.02 in Rain Light Rain