London, United Kingdom

3:50 AM GMT on December 14, 2017 (GMT +0000)
Heathrow

Weather History for EGLL - September, 2011

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Month of September, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 82 °F 69 °F 60 °F
Mean Temperature 68 °F 61 °F 53 °F
Min Temperature 60 °F 53 °F 46 °F
Degree Days  
Heating Degree Days (base 65) 12 4 0 127
Cooling Degree Days (base 65) 4 0 0 9
Growing Degree Days (base 50) 18 11 3 332
Dew Point  
Dew Point 64 °F 53 °F 41 °F
Precipitation  
Precipitation 0.00 in 0.00 in 0.00 in 0.00 in
Snowdepth - - - -
Wind  
Wind 30 mph 9 mph 0 mph
Gust Wind 38 mph 29 mph 21 mph
Sea Level Pressure  
Sea Level Pressure 30.42 in 29.93 in 29.53 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 08, 2011 Rise Set
Actual Time 6:24 AM BST 7:33 PM BST
Civil Twilight 5:50 AM BST 8:07 PM BST
Nautical Twilight 5:09 AM BST 8:48 PM BST
Astronomical Twilight 4:24 AM BST 9:33 PM BST
Moon 5:37 PM BST (9/8) 2:03 AM BST (9/8)
Length of Visible Light 14h 16m
Length of Day
13h 08m
Waxing Gibbous, 86% of the Moon is Illuminated
Sep 8
Waxing Gibbous
Sep 12
Full
Sep 20
Last Quarter
Sep 27
New
Oct 4
First Quarter

Daily Weather History & Observations

2011 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 68 60 51 54 51 48 94 74 52 30.01 29.95 29.89 6 6 6 14 7 - 0.00  
2 78 66 55 61 56 52 94 73 42 29.89 29.85 29.83 6 6 5 13 6 22 0.00  
3 73 66 59 59 57 55 94 75 57 29.83 29.79 29.74 6 5 2 16 8 - 0.00  
4 66 62 57 61 56 48 94 83 59 29.74 29.72 29.68 6 6 3 14 9 22 0.00 Rain
5 66 58 51 54 50 46 88 72 49 29.98 29.86 29.77 6 6 6 25 14 38 0.00 Rain
6 64 60 55 59 55 50 94 82 68 29.95 29.74 29.65 6 6 4 22 17 38 0.00 Rain
7 62 58 53 52 50 48 88 77 63 29.89 29.86 29.74 6 6 6 20 15 - 0.00 Rain
8 68 62 55 59 54 50 94 78 68 29.86 29.80 29.77 6 6 6 15 12 28 0.00 Rain
9 69 64 60 63 60 57 94 84 73 29.86 29.81 29.77 6 6 4 16 8 - 0.00 Rain
10 71 66 60 64 60 54 94 82 68 29.80 29.66 29.62 6 6 6 16 9 29 0.00 Rain
11 69 64 59 57 54 48 94 75 49 29.71 29.67 29.62 6 6 6 21 12 33 0.00 Rain
12 69 64 57 61 54 48 88 70 49 29.83 29.66 29.53 6 6 4 30 18 38 0.00 Rain
13 66 60 53 52 48 41 82 67 45 30.01 29.89 29.83 6 6 6 26 16 38 0.00 Rain
14 66 58 51 50 46 41 82 66 40 30.12 30.05 30.01 6 6 6 16 11 - 0.00  
15 66 56 46 50 47 43 93 72 49 30.15 30.12 30.09 6 6 6 9 4 - 0.00  
16 71 61 51 55 52 48 94 72 50 30.09 29.91 29.80 6 6 6 17 8 - 0.00 Rain , Thunderstorm
17 64 57 50 54 50 45 94 78 49 29.83 29.70 29.62 6 6 6 21 12 - 0.00 Rain
18 60 53 46 50 47 45 94 80 63 29.77 29.63 29.59 6 6 6 10 7 - 0.00  
19 64 56 48 55 50 46 94 78 56 30.04 29.92 29.77 6 6 6 17 10 - 0.00  
20 66 62 57 57 56 52 94 79 72 30.06 30.05 30.01 6 6 3 17 12 29 0.00  
21 64 60 55 57 51 45 100 78 49 30.06 30.03 30.01 6 6 2 21 8 30 0.00 Rain
22 66 60 53 52 49 45 88 72 46 30.15 30.10 30.04 6 6 6 17 10 - 0.00  
23 64 56 48 50 49 46 94 77 56 30.12 30.06 30.01 6 6 6 13 6 - 0.00  
24 68 57 46 55 51 46 100 82 56 30.01 29.95 29.92 6 5 3 10 5 - 0.00  
25 69 60 51 57 55 50 94 80 56 30.04 29.99 29.95 6 6 4 17 7 29 0.00  
26 71 64 57 61 58 55 94 81 60 30.30 30.13 30.01 6 6 4 10 7 - 0.00 Rain
27 69 61 53 59 57 52 100 87 68 30.42 30.37 30.30 6 4 0 9 5 - 0.00 Fog
28 77 65 53 61 56 52 100 76 47 30.39 30.30 30.24 6 4 1 12 4 - 0.00 Fog
29 80 68 55 59 57 54 100 72 39 30.24 30.22 30.18 6 3 2 9 4 - 0.00 Fog
30 82 68 55 59 55 50 100 70 34 30.24 30.20 30.18 6 4 3 9 4 - 0.00