Weather History for St. Louis, MO

Change the Weather History Date:

Sunday, July 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 79 °F 80 °F  
Max Temperature 84 °F 89 °F 106 °F (1901)
Min Temperature 74 °F 71 °F 54 °F (1970)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 June heating degree days 1 5  
Since 1 July heating degree days 0 0  
Cooling Degree Days 14 15  
Month to date cooling degree days 311 315  
Year to date cooling degree days 859 823  
Since 1 June cooling degree days 648 649  
Growing Degree Days 28 (Base 50)    
Moisture  
Dew Point 69 °F    
Average Humidity 70    
Maximum Humidity 82    
Minimum Humidity 58    
Precipitation  
Precipitation T in 0.13 in 1.49 in (1977)
Month to date precipitation 1.77 2.83  
Year to date precipitation 31.84 23.48  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2013)
Month to date snowfall 0.0 0.0  
Since 1 June snowfall 0.0 0.0  
Since 1 July snowfall 0.0 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.88 in    
Wind  
Wind Speed 5 mph (SSW)    
Max Wind Speed 9 mph    
Max Gust Speed 14 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

Search for Another Location

Airport:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Jul. 21, 2013 Rise Set
Actual Time 5:53 AM CDT 8:21 PM CDT
Civil Twilight 5:23 AM CDT 8:52 PM CDT
Nautical Twilight 4:45 AM CDT 9:29 PM CDT
Astronomical Twilight 4:03 AM CDT 10:11 PM CDT
Moon 7:20 PM CDT (7/21) 4:39 AM CDT (7/21)
Length of Visible Light 15h 29m
Length of Day
14h 27m
Waxing Gibbous, 98% of the Moon is Illuminated
Jul 21
Waxing Gibbous
Jul 22
Full
Jul 29
Last Quarter
Aug 6
New
Aug 14
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% 29.88 in 10.0 mi Calm Calm - N/A   Overcast
1:51 AM 77.0 °F - 68.0 °F 74% 29.89 in 10.0 mi SSW 3.5 mph - N/A   Overcast
2:51 AM 75.9 °F - 68.0 °F 76% 29.88 in 10.0 mi South 6.9 mph - N/A   Overcast
3:51 AM 75.9 °F - 68.0 °F 76% 29.88 in 10.0 mi Calm Calm - N/A   Overcast
4:51 AM 75.9 °F - 69.1 °F 79% 29.88 in 10.0 mi South 3.5 mph - N/A   Overcast
5:51 AM 75.0 °F - 69.1 °F 82% 29.90 in 10.0 mi South 5.8 mph - N/A   Overcast
6:51 AM 75.9 °F - 68.0 °F 76% 29.90 in 10.0 mi Calm Calm - N/A   Overcast
7:51 AM 77.0 °F - 68.0 °F 74% 29.91 in 10.0 mi WSW 5.8 mph - N/A   Overcast
8:51 AM 77.0 °F - 69.1 °F 76% 29.92 in 10.0 mi SW 5.8 mph - 0.00 in Rain Light Rain
9:51 AM 78.1 °F - 68.0 °F 71% 29.92 in 10.0 mi SSW 4.6 mph - 0.00 in   Overcast
10:51 AM 80.1 °F 82.9 °F 69.1 °F 69% 29.92 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
11:51 AM 81.0 °F 84.1 °F 69.1 °F 67% 29.91 in 10.0 mi South 5.8 mph - N/A   Overcast
12:51 PM 82.0 °F 85.9 °F 70.0 °F 67% 29.91 in 10.0 mi Calm Calm - N/A   Overcast
1:51 PM 82.9 °F 87.0 °F 70.0 °F 65% 29.89 in 10.0 mi South 3.5 mph - N/A   Overcast
2:51 PM 82.9 °F 87.0 °F 70.0 °F 65% 29.87 in 10.0 mi SW 5.8 mph - N/A   Overcast
3:51 PM 82.0 °F 85.5 °F 69.1 °F 65% 29.86 in 10.0 mi SSW 3.5 mph - N/A   Overcast
4:51 PM 82.0 °F 85.5 °F 69.1 °F 65% 29.86 in 10.0 mi SSW 6.9 mph - 0.00 in Rain Light Rain
5:51 PM 82.0 °F 85.5 °F 69.1 °F 65% 29.84 in 10.0 mi ESE 6.9 mph - 0.00 in   Mostly Cloudy
6:51 PM 82.0 °F 84.1 °F 66.0 °F 58% 29.84 in 10.0 mi SW 5.8 mph - N/A   Mostly Cloudy
7:51 PM 81.0 °F 83.8 °F 68.0 °F 65% 29.83 in 10.0 mi SSW 3.5 mph - N/A   Mostly Cloudy
8:51 PM 81.0 °F 83.3 °F 66.9 °F 62% 29.84 in 10.0 mi South 4.6 mph - N/A   Mostly Cloudy
9:51 PM 80.1 °F 83.2 °F 70.0 °F 71% 29.85 in 10.0 mi SSW 4.6 mph - N/A   Overcast
10:51 PM 79.0 °F - 71.1 °F 77% 29.84 in 10.0 mi South 9.2 mph - N/A   Overcast
11:51 PM 78.1 °F - 68.0 °F 71% 29.83 in 10.0 mi SSW 5.8 mph - 0.00 in   Overcast