Weather History for London / Heathrow Airport, United Kingdom

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Tuesday, September 17, 2013

  Actual Average Record
Temperature  
Mean Temperature 52 °F -  
Max Temperature 59 °F 61 °F - ()
Min Temperature 46 °F 49 °F - ()
Degree Days  
Heating Degree Days 12    
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 48 °F    
Average Humidity 82    
Maximum Humidity 94    
Minimum Humidity 59    
Precipitation  
Precipitation 0.16 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.53 in    
Wind  
Wind Speed 9 mph ()    
Max Wind Speed 15 mph    
Max Gust Speed -    
Visibility 6.2 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: Averaged Metar Reports

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Astronomy

Sep. 17, 2013 Rise Set
Actual Time 6:40 AM BST 7:11 PM BST
Civil Twilight 6:06 AM BST 7:44 PM BST
Nautical Twilight 5:26 AM BST 8:24 PM BST
Astronomical Twilight 4:44 AM BST 9:06 PM BST
Moon 5:56 PM BST (9/17) 4:05 AM BST (9/17)
Length of Visible Light 13h 38m
Length of Day
12h 31m
Waxing Gibbous, 95% of the Moon is Illuminated
Sep 17
Waxing Gibbous
Sep 19
Full
Sep 27
Last Quarter
Oct 5
New
Oct 12
First Quarter

Hourly Weather History & Observations

Time (BST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:20 AM 48.2 °F - 41.0 °F 76% 29.65 in - SW 6.9 mph - N/A   Clear
12:50 AM 47 °F - 41 °F 74% 29.66 in 22 mi SW 9.2 mph - -  
12:50 AM 46.4 °F 42.4 °F 41.0 °F 81% 29.65 in - SW 8.1 mph - N/A   Clear
1:20 AM 46.4 °F 41.9 °F 41.0 °F 81% 29.65 in - WSW 9.2 mph - N/A   Clear
1:50 AM 46.4 °F 43.5 °F 41.0 °F 81% 29.65 in - SSW 5.8 mph - N/A   Clear
2:20 AM 46.4 °F 42.4 °F 41.0 °F 81% 29.65 in 6.2 mi WSW 8.1 mph - N/A   Unknown
2:50 AM 50.0 °F - 42.8 °F 76% 29.65 in 6.2 mi West 11.5 mph - N/A   Unknown
3:20 AM 50.0 °F - 42.8 °F 76% 29.65 in 6.2 mi West 12.7 mph - N/A   Unknown
3:50 AM 50.0 °F - 42.8 °F 76% 29.65 in - WSW 13.8 mph - N/A   Clear
4:20 AM 50.0 °F - 42.8 °F 76% 29.62 in - WSW 12.7 mph - N/A   Clear
4:50 AM 50.0 °F - 42.8 °F 76% 29.62 in - West 12.7 mph - N/A   Clear
5:20 AM 50.0 °F - 42.8 °F 76% 29.62 in - West 12.7 mph - N/A   Clear
5:50 AM 48.2 °F - 42.8 °F 82% 29.62 in - WSW 12.7 mph - N/A   Clear
6:20 AM 48.2 °F - 42.8 °F 82% 29.62 in - WSW 11.5 mph - N/A   Clear
6:50 AM 48.2 °F - 41.0 °F 76% 29.62 in - WSW 12.7 mph - N/A   Clear
7:20 AM 48.2 °F - 41.0 °F 76% 29.62 in - WSW 13.8 mph - N/A   Clear
7:50 AM 48.2 °F - 42.8 °F 82% 29.62 in - WSW 12.7 mph - N/A   Clear
8:20 AM 50.0 °F - 42.8 °F 76% 29.62 in - WSW 12.7 mph - N/A   Clear
8:50 AM 51.8 °F - 42.8 °F 71% 29.62 in - WSW 12.7 mph - N/A   Clear
9:20 AM 53.6 °F - 42.8 °F 67% 29.62 in - WSW 11.5 mph - N/A   Clear
9:50 AM 53 °F - 43 °F 59% 29.63 in 15 mi WSW 11.5 mph - -  
9:50 AM 53.6 °F - 42.8 °F 67% 29.62 in - WSW 12.7 mph - N/A   Clear
10:20 AM 53.6 °F - 42.8 °F 67% 29.62 in - WSW 13.8 mph - N/A   Clear
10:50 AM 55.4 °F - 42.8 °F 63% 29.62 in - WSW 13.8 mph - N/A   Clear
11:20 AM 55.4 °F - 42.8 °F 63% 29.59 in - WSW 15.0 mph - N/A   Clear
11:50 AM 55.4 °F - 44.6 °F 67% 29.59 in - SW 15.0 mph - N/A   Clear
12:20 PM 55.4 °F - 44.6 °F 67% 29.56 in 6.2 mi SW 13.8 mph - N/A   Partly Cloudy
12:50 PM 54 °F - 49 °F 77% 29.57 in 7 mi SW 13.8 mph - - Rain Light Rain Showers
12:50 PM 53.6 °F - 48.2 °F 82% 29.56 in 6.2 mi SW 12.7 mph - N/A Rain Light Rain
1:20 PM 53.6 °F - 48.2 °F 82% 29.56 in 6.2 mi WSW 12.7 mph - N/A Rain Light Rain
1:50 PM 51.8 °F - 50.0 °F 94% 29.56 in 4.3 mi SSW 8.1 mph - N/A Rain Light Rain
2:20 PM 53.6 °F - 50.0 °F 88% 29.53 in 5.6 mi South 6.9 mph - N/A Rain Light Rain
2:50 PM 53.6 °F - 51.8 °F 94% 29.50 in 5.6 mi South 8.1 mph - N/A Rain Light Rain
3:20 PM 53.6 °F - 51.8 °F 94% 29.47 in 5.6 mi SSE 10.4 mph - N/A   Light Drizzle
3:50 PM 54 °F - 52 °F 89% 29.44 in 4 mi South 6.9 mph - - Rain Light Drizzle
3:50 PM 53.6 °F - 51.8 °F 94% 29.44 in 5.0 mi SSE 8.1 mph - N/A   Light Drizzle
4:20 PM 55.4 °F - 53.6 °F 94% 29.42 in 2.8 mi SE 8.1 mph - N/A Rain Light Rain
4:50 PM 55.4 °F - 53.6 °F 94% 29.39 in 1.9 mi SE 6.9 mph - N/A Rain Light Rain
5:20 PM 55.4 °F - 53.6 °F 94% 29.36 in 2.2 mi ESE 5.8 mph - N/A Rain Light Rain
5:50 PM 55.4 °F - 53.6 °F 94% 29.36 in 2.8 mi Variable 2.3 mph - N/A Rain Light Rain
6:20 PM 57.2 °F - 55.4 °F 94% 29.36 in 6.2 mi WSW 5.8 mph - N/A   Mostly Cloudy
6:50 PM 57 °F - 55 °F 92% 29.36 in 19 mi West 4.6 mph - - Rain Drizzle
6:50 PM 57.2 °F - 55.4 °F 94% 29.36 in 6.2 mi West 5.8 mph - N/A   Mostly Cloudy
7:20 PM 59.0 °F - 57.2 °F 94% 29.36 in 6.2 mi West 6.9 mph - N/A Rain Light Rain
7:50 PM 59.0 °F - 57.2 °F 94% 29.36 in 6.2 mi West 6.9 mph - N/A   Mostly Cloudy
8:20 PM 59.0 °F - 57.2 °F 94% 29.36 in 6.2 mi NW 4.6 mph - N/A   Mostly Cloudy
8:50 PM 59.0 °F - 57.2 °F 94% 29.39 in 6.2 mi West 5.8 mph - N/A   Mostly Cloudy
9:20 PM 59.0 °F - 57.2 °F 94% 29.39 in 6.2 mi NW 4.6 mph - N/A   Mostly Cloudy
9:50 PM 58 °F - 55 °F 88% 29.39 in 25 mi WNW 6.9 mph - -   Scattered Clouds
9:50 PM 59.0 °F - 55.4 °F 88% 29.39 in 6.2 mi WNW 5.8 mph - N/A   Mostly Cloudy
10:20 PM 59.0 °F - 55.4 °F 88% 29.39 in 6.2 mi WNW 6.9 mph - N/A   Scattered Clouds
10:50 PM 57.2 °F - 53.6 °F 88% 29.39 in 6.2 mi WNW 5.8 mph - N/A   Partly Cloudy
11:20 PM 57.2 °F - 53.6 °F 88% 29.42 in 6.2 mi WNW 5.8 mph - N/A   Mostly Cloudy
11:50 PM 57.2 °F - 53.6 °F 88% 29.42 in 6.2 mi WNW 4.6 mph - N/A   Scattered Clouds