Weather History for St. Louis, MO

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Tuesday, May 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 74 °F 68 °F  
Max Temperature 82 °F 78 °F 93 °F (1941)
Min Temperature 65 °F 59 °F 38 °F (1883)
Degree Days  
Heating Degree Days 0 2  
Month to date heating degree days 87 64  
Since 1 July heating degree days 4472 4520  
Cooling Degree Days 9 5  
Month to date cooling degree days 109 69  
Year to date cooling degree days 143 115  
Growing Degree Days 22 (Base 50)    
Moisture  
Dew Point 62 °F    
Average Humidity 72    
Maximum Humidity 93    
Minimum Humidity 51    
Precipitation  
Precipitation 0.01 in 0.16 in 2.00 in (1957)
Month to date precipitation 4.19 3.11  
Year to date precipitation 21.20 14.76  
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 29.75 in    
Wind  
Wind Speed 10 mph (South)    
Max Wind Speed 21 mph    
Max Gust Speed 24 mph    
Visibility 10 miles    
Events Rain , Thunderstorm    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

May. 21, 2013 Rise Set
Actual Time 5:44 AM CDT 8:12 PM CDT
Civil Twilight 5:13 AM CDT 8:42 PM CDT
Nautical Twilight 4:36 AM CDT 9:20 PM CDT
Astronomical Twilight 3:54 AM CDT 10:02 PM CDT
Moon 4:28 PM CDT (5/21) 3:09 AM CDT (5/21)
Length of Visible Light 15h 28m
Length of Day
14h 27m
Waxing Gibbous, 84% of the Moon is Illuminated
May 21
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
12:16 AM 64.4 °F - 62.6 °F 94% 29.76 in 8.0 mi East 10.4 mph - 0.03 in Rain , Thunderstorm Light Thunderstorms and Rain
12:42 AM 66.2 °F - 62.6 °F 88% 29.80 in 10.0 mi Calm Calm - 0.03 in   Overcast
12:51 AM 66.0 °F - 61.0 °F 84% 29.76 in 10.0 mi Calm Calm - 0.03 in   Overcast
1:51 AM 66.0 °F - 62.1 °F 87% 29.75 in 10.0 mi SSE 6.9 mph - N/A   Overcast
2:17 AM 66.2 °F - 62.6 °F 88% 29.80 in 6.0 mi SSW 5.8 mph - 0.00 in Rain , Thunderstorm Light Thunderstorms and Rain
2:51 AM 66.0 °F - 62.1 °F 87% 29.78 in 10.0 mi SE 8.1 mph - 0.01 in Rain , Thunderstorm Light Thunderstorms and Rain
3:06 AM 64.4 °F - 60.8 °F 88% 29.79 in 10.0 mi SE 10.4 mph - N/A   Overcast
3:51 AM 64.9 °F - 62.1 °F 90% 29.76 in 10.0 mi SSE 11.5 mph - N/A   Overcast
4:51 AM 64.9 °F - 63.0 °F 93% 29.73 in 10.0 mi SSE 6.9 mph - N/A   Overcast
5:51 AM 64.9 °F - 63.0 °F 93% 29.73 in 10.0 mi SSW 6.9 mph - N/A   Mostly Cloudy
6:51 AM 66.0 °F - 62.1 °F 87% 29.76 in 10.0 mi SSW 11.5 mph - N/A   Mostly Cloudy
6:52 AM 66.0 °F - 62.1 °F 87% 29.76 in 10.0 mi SSW 11.5 mph - N/A   Mostly Cloudy
7:51 AM 68.0 °F - 62.1 °F 81% 29.78 in 10.0 mi SW 9.2 mph - N/A   Overcast
8:51 AM 69.1 °F - 62.1 °F 78% 29.78 in 10.0 mi South 8.1 mph - N/A   Mostly Cloudy
9:51 AM 73.0 °F - 61.0 °F 66% 29.77 in 10.0 mi SSW 9.2 mph 18.4 mph N/A   Mostly Cloudy
10:51 AM 73.9 °F - 62.1 °F 66% 29.77 in 10.0 mi SSW 10.4 mph - N/A   Mostly Cloudy
11:51 AM 75.9 °F - 64.0 °F 67% 29.77 in 10.0 mi SW 10.4 mph - N/A   Mostly Cloudy
12:51 PM 78.1 °F - 64.0 °F 62% 29.77 in 10.0 mi SSW 10.4 mph - N/A   Mostly Cloudy
1:51 PM 81.0 °F 82.5 °F 64.0 °F 56% 29.75 in 10.0 mi SSW 10.4 mph 18.4 mph N/A   Mostly Cloudy
2:51 PM 82.0 °F 83.0 °F 62.1 °F 51% 29.75 in 10.0 mi SSW 12.7 mph 23.0 mph N/A   Mostly Cloudy
3:51 PM 79.0 °F - 63.0 °F 58% 29.72 in 10.0 mi SSW 15.0 mph - N/A   Mostly Cloudy
4:51 PM 78.1 °F - 59.0 °F 52% 29.70 in 10.0 mi SW 17.3 mph 20.7 mph N/A   Overcast
5:51 PM 75.9 °F - 60.1 °F 58% 29.71 in 10.0 mi SSW 11.5 mph - N/A   Mostly Cloudy
6:51 PM 75.9 °F - 57.9 °F 54% 29.72 in 10.0 mi WSW 9.2 mph - N/A   Mostly Cloudy
7:51 PM 73.9 °F - 59.0 °F 59% 29.73 in 10.0 mi SW 9.2 mph - N/A   Mostly Cloudy
8:51 PM 73.0 °F - 59.0 °F 61% 29.71 in 10.0 mi South 6.9 mph - N/A   Mostly Cloudy
9:51 PM 70.0 °F - 62.1 °F 76% 29.70 in 10.0 mi South 9.2 mph - N/A   Mostly Cloudy
10:51 PM 69.1 °F - 62.1 °F 78% 29.69 in 10.0 mi SSE 9.2 mph - N/A   Mostly Cloudy
11:51 PM 68.0 °F - 62.1 °F 81% 29.70 in 10.0 mi SSW 9.2 mph - N/A   Mostly Cloudy