St. Louis, MO

12:13 PM CDT on August 22, 2017 (GMT -0500)
Lambert-Saint Louis International

Weather History for KSTL - May, 2011

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Monday, May 9, 2011

  Actual Average Record
Temperature  
Mean Temperature 77 °F 65 °F  
Max Temperature 86 °F 74 °F 92 °F (1934)
Min Temperature 67 °F 55 °F 35 °F (1966)
Degree Days  
Heating Degree Days 0 3  
Month to date heating degree days 60 34  
Since 1 July heating degree days 4433 4490  
Cooling Degree Days 12 3  
Month to date cooling degree days 23 21  
Year to date cooling degree days 81 67  
Growing Degree Days 25 (Base 50)    
Moisture  
Dew Point 66 °F    
Average Humidity 73    
Maximum Humidity 87    
Minimum Humidity 58    
Precipitation  
Precipitation T in 0.14 in 2.09 in (1949)
Month to date precipitation 0.39 1.29  
Year to date precipitation 17.71 12.94  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2015)
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 36.8 17.7  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.72 in    
Wind  
Wind Speed 14 mph (SSE)    
Max Wind Speed 39 mph    
Max Gust Speed 51 mph    
Visibility 8 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Date:

Astronomy

May. 09, 2011 Rise Set
Actual Time 5:55 AM CDT 8:01 PM CDT
Civil Twilight 5:25 AM CDT 8:30 PM CDT
Nautical Twilight 4:50 AM CDT 9:06 PM CDT
Astronomical Twilight 4:11 AM CDT 9:45 PM CDT
Moon 11:21 AM CDT (5/9) 12:50 AM CDT (5/9)
Length of Visible Light 15h 04m
Length of Day
14h 05m
Waxing Crescent, 38% of the Moon is Illuminated
May 9
Waxing Crescent
May 10
First Quarter
May 17
Full
May 24
Last Quarter
Jun 1
New

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 70.0 °F - 64.0 °F 81% 29.81 in 8.0 mi ESE 13.8 mph - N/A   Scattered Clouds
1:51 AM 70.0 °F - 64.0 °F 81% 29.80 in 7.0 mi ESE 10.4 mph - N/A   Scattered Clouds
2:51 AM 69.1 °F - 64.0 °F 84% 29.80 in 7.0 mi ESE 9.2 mph - N/A   Mostly Cloudy
3:51 AM 68.0 °F - 63.0 °F 84% 29.80 in 7.0 mi ESE 11.5 mph - N/A   Mostly Cloudy
4:51 AM 66.9 °F - 63.0 °F 87% 29.79 in 7.0 mi ESE 11.5 mph - N/A   Scattered Clouds
5:51 AM 66.9 °F - 62.1 °F 84% 29.77 in 7.0 mi ESE 10.4 mph - N/A   Scattered Clouds
6:51 AM 69.1 °F - 64.0 °F 84% 29.80 in 6.0 mi ESE 10.4 mph - N/A   Haze
7:51 AM 72.0 °F - 64.9 °F 78% 29.80 in 7.0 mi SE 12.7 mph - N/A   Mostly Cloudy
8:51 AM 73.9 °F - 66.0 °F 76% 29.79 in 7.0 mi SSE 13.8 mph - N/A   Mostly Cloudy
9:51 AM 77.0 °F - 66.9 °F 71% 29.79 in 7.0 mi South 12.7 mph - N/A   Overcast
10:51 AM 75.9 °F - 66.9 °F 74% 29.83 in 7.0 mi SSW 5.8 mph - 0.00 in Rain Light Rain
11:51 AM 73.9 °F - 66.9 °F 79% 29.76 in 7.0 mi SE 19.6 mph - 0.00 in   Overcast
12:16 PM 73.4 °F - 66.2 °F 78% 29.72 in 8.0 mi SE 25.3 mph 36.8 mph N/A   Overcast
12:51 PM 78.8 °F - 62.6 °F 57% 29.65 in 8.0 mi South 27.6 mph 46.0 mph N/A   Overcast
1:51 PM 78.1 °F - 68.0 °F 71% 29.66 in 8.0 mi SSE 25.3 mph 38.0 mph N/A   Mostly Cloudy
2:51 PM 82.0 °F 84.9 °F 68.0 °F 62% 29.69 in 10.0 mi South 12.7 mph 25.3 mph N/A   Mostly Cloudy
3:51 PM 84.0 °F 87.8 °F 69.1 °F 61% 29.65 in 9.0 mi SSE 20.7 mph 29.9 mph N/A   Scattered Clouds
4:51 PM 84.0 °F 87.8 °F 69.1 °F 61% 29.64 in 9.0 mi SSE 19.6 mph 29.9 mph N/A   Partly Cloudy
5:51 PM 84.9 °F 88.8 °F 69.1 °F 59% 29.64 in 9.0 mi South 17.3 mph 24.2 mph N/A   Scattered Clouds
6:51 PM 84.0 °F 87.0 °F 68.0 °F 58% 29.63 in 9.0 mi South 13.8 mph - N/A   Partly Cloudy
7:51 PM 82.0 °F 84.1 °F 66.0 °F 58% 29.64 in 10.0 mi South 15.0 mph 24.2 mph N/A   Partly Cloudy
8:51 PM 80.1 °F 82.3 °F 66.9 °F 64% 29.65 in 9.0 mi South 11.5 mph - N/A   Scattered Clouds
9:51 PM 79.0 °F - 66.9 °F 66% 29.67 in 10.0 mi South 10.4 mph - N/A   Scattered Clouds
10:51 PM 78.1 °F - 66.9 °F 68% 29.67 in 9.0 mi South 10.4 mph 18.4 mph N/A   Scattered Clouds
11:51 PM 77.0 °F - 68.0 °F 74% 29.67 in 8.0 mi South 10.4 mph - N/A   Mostly Cloudy