London, United Kingdom

4:43 PM BST on August 30, 2016 (GMT +0100)
Heathrow

Weather History for EGLL - December, 2012

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Monday, December 17, 2012

  Actual Average Record
Temperature  
Mean Temperature 44 °F -  
Max Temperature 48 °F 45 °F 59 °F (2015)
Min Temperature 41 °F 35 °F 23 °F (2010)
Degree Days  
Heating Degree Days 20    
Moisture  
Dew Point 40 °F    
Average Humidity 83    
Maximum Humidity 93    
Minimum Humidity 62    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.57 in    
Wind  
Wind Speed 9 mph ()    
Max Wind Speed 15 mph    
Max Gust Speed 24 mph    
Visibility 7.6 miles    
Events Rain    
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: Averaged Metar Reports

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Date:

Astronomy

Dec. 17, 2012 Rise Set
Actual Time 8:02 AM GMT 3:53 PM GMT
Civil Twilight 7:22 AM GMT 4:33 PM GMT
Nautical Twilight 6:39 AM GMT 5:16 PM GMT
Astronomical Twilight 5:58 AM GMT 5:57 PM GMT
Moon 10:35 AM GMT (12/17) 9:30 PM GMT (12/17)
Length of Visible Light 9h 11m
Length of Day
7h 50m
Waxing Crescent, 23% of the Moon is Illuminated
Dec 17
Waxing Crescent
Dec 20
First Quarter
Dec 28
Full
Jan 5
Last Quarter
Jan 11
New

Hourly Weather History & Observations

Time (GMT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:20 AM 42.8 °F 38.6 °F 41.0 °F 93% 29.50 in - South 6.9 mph - N/A   Clear
12:50 AM 42.8 °F 38.6 °F 41.0 °F 93% 29.47 in - SSW 6.9 mph - N/A   Clear
1:20 AM 42.8 °F 38.0 °F 41.0 °F 93% 29.47 in 6.2 mi SSW 8.1 mph - N/A   Unknown
1:50 AM 42.8 °F 37.5 °F 41.0 °F 93% 29.47 in 5.6 mi SSW 9.2 mph - N/A   Unknown
2:20 AM 42.8 °F 38.6 °F 41.0 °F 93% 29.47 in 5.6 mi SSW 6.9 mph - N/A   Unknown
2:50 AM 44 °F - 42 °F 90% 29.49 in 10 mi South 8.1 mph - -   Mostly Cloudy
2:50 AM 42.8 °F 38.6 °F 41.0 °F 93% 29.47 in 5.6 mi SSW 6.9 mph - N/A   Unknown
3:20 AM 42.8 °F 38.0 °F 41.0 °F 93% 29.47 in - SSW 8.1 mph - N/A   Clear
3:50 AM 42.8 °F 38.0 °F 41.0 °F 93% 29.47 in - SW 8.1 mph - N/A   Clear
4:20 AM 42.8 °F 38.6 °F 41.0 °F 93% 29.47 in 6.2 mi SSW 6.9 mph - N/A   Partly Cloudy
4:50 AM 42.8 °F 39.3 °F 39.2 °F 87% 29.47 in 6.2 mi SW 5.8 mph - N/A   Partly Cloudy
5:20 AM 41.0 °F 38.0 °F 39.2 °F 93% 29.47 in 6.2 mi SSW 4.6 mph - N/A   Partly Cloudy
5:50 AM 41 °F - 39 °F 90% 29.50 in 15 mi SW 5.8 mph - -  
5:50 AM 41.0 °F 38.0 °F 39.2 °F 93% 29.47 in - SSW 4.6 mph - N/A   Clear
6:20 AM 41.0 °F 36.4 °F 39.2 °F 93% 29.50 in - SW 6.9 mph - N/A   Clear
6:50 AM 41.0 °F 35.2 °F 39.2 °F 93% 29.50 in - SW 9.2 mph - N/A   Clear
7:20 AM 41.0 °F 35.2 °F 39.2 °F 93% 29.53 in - WSW 9.2 mph - N/A   Clear
7:50 AM 42.8 °F 37.0 °F 39.2 °F 87% 29.53 in 6.2 mi WSW 10.4 mph - N/A   Partly Cloudy
8:20 AM 42.8 °F 37.0 °F 39.2 °F 87% 29.53 in 6.2 mi WSW 10.4 mph - N/A   Scattered Clouds
8:50 AM 43 °F - 40 °F 85% 29.56 in 19 mi WSW 9.2 mph - - Rain Rain
8:50 AM 42.8 °F 37.0 °F 39.2 °F 87% 29.53 in 6.2 mi WSW 10.4 mph - N/A   Scattered Clouds
9:20 AM 42.8 °F 37.0 °F 39.2 °F 87% 29.56 in 6.2 mi WSW 10.4 mph - N/A   Partly Cloudy
9:50 AM 44.6 °F 38.4 °F 39.2 °F 81% 29.56 in 6.2 mi WSW 12.7 mph - N/A   Partly Cloudy
10:20 AM 46.4 °F 41.1 °F 41.0 °F 81% 29.59 in - WSW 11.5 mph - N/A   Clear
10:50 AM 46.4 °F 40.7 °F 41.0 °F 81% 29.59 in 6.2 mi WSW 12.7 mph - N/A   Partly Cloudy
11:20 AM 46.4 °F 40.7 °F 41.0 °F 81% 29.59 in 6.2 mi West 12.7 mph - N/A   Partly Cloudy
11:50 AM 48 °F - 42 °F 72% 29.60 in 16 mi West 11.5 mph - -  
11:50 AM 48.2 °F - 41.0 °F 76% 29.59 in 6.2 mi West 12.7 mph - N/A   Partly Cloudy
12:20 PM 48.2 °F - 41.0 °F 76% 29.59 in 6.2 mi West 12.7 mph - N/A   Partly Cloudy
12:50 PM 48.2 °F - 41.0 °F 76% 29.59 in 6.2 mi West 12.7 mph 24.2 mph N/A   Partly Cloudy
1:20 PM 48.2 °F - 41.0 °F 76% 29.62 in 6.2 mi West 12.7 mph - N/A   Partly Cloudy
1:50 PM 48.2 °F - 39.2 °F 71% 29.62 in 6.2 mi West 13.8 mph - N/A   Partly Cloudy
2:20 PM 48.2 °F - 39.2 °F 71% 29.62 in 6.2 mi WSW 11.5 mph - N/A   Partly Cloudy
2:50 PM 48.2 °F - 39.2 °F 71% 29.62 in 6.2 mi WSW 12.7 mph - N/A   Partly Cloudy
3:00 PM 48 °F - 39 °F 62%  in - WSW 12.7 mph - -  
3:20 PM 46.4 °F 40.7 °F 39.2 °F 76% 29.62 in 6.2 mi WSW 12.7 mph - N/A   Partly Cloudy
3:50 PM 46.4 °F 40.7 °F 39.2 °F 76% 29.62 in 6.2 mi WSW 12.7 mph - N/A   Partly Cloudy
4:20 PM 46.4 °F 41.1 °F 37.4 °F 71% 29.62 in - WSW 11.5 mph - N/A   Clear
4:50 PM 44.6 °F 38.8 °F 37.4 °F 76% 29.65 in 6.2 mi SW 11.5 mph - N/A   Partly Cloudy
5:20 PM 42.8 °F 37.5 °F 37.4 °F 81% 29.65 in 6.2 mi SW 9.2 mph - N/A   Unknown
5:50 PM 45 °F - 39 °F 74% 29.65 in 12 mi SW 11.5 mph - -   Scattered Clouds
5:50 PM 42.8 °F 37.0 °F 37.4 °F 81% 29.65 in - SW 10.4 mph - N/A   Clear
6:20 PM 44.6 °F 37.8 °F 39.2 °F 81% 29.65 in - SW 15.0 mph - N/A   Clear
6:50 PM 44.6 °F 38.4 °F 39.2 °F 81% 29.65 in - SW 12.7 mph - N/A   Clear
7:20 PM 44.6 °F 38.8 °F 39.2 °F 81% 29.65 in - SW 11.5 mph - N/A   Clear
7:50 PM 44.6 °F 39.2 °F 39.2 °F 81% 29.65 in - SW 10.4 mph - N/A   Clear
8:20 PM 44.6 °F 39.2 °F 39.2 °F 81% 29.68 in 6.2 mi SW 10.4 mph - N/A   Unknown
8:50 PM 44 °F - 40 °F 79% 29.68 in 13 mi SW 10.4 mph - -   Partly Cloudy
8:50 PM 42.8 °F 37.0 °F 39.2 °F 87% 29.68 in - SW 10.4 mph - N/A   Clear
9:20 PM 42.8 °F 36.6 °F 39.2 °F 87% 29.68 in - WSW 11.5 mph - N/A   Clear
9:50 PM 42.8 °F 37.0 °F 39.2 °F 87% 29.68 in - SW 10.4 mph - N/A   Clear