Weather History for London, United Kingdom

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Month of September, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 82 °F 67 °F 53 °F
Mean Temperature 66 °F 59 °F 50 °F
Min Temperature 61 °F 49 °F 42 °F
Degree Days  
Heating Degree Days (base 65) 15 7 0 200
Cooling Degree Days (base 65) 2 0 0 4
Growing Degree Days (base 50) 16 9 0 256
Dew Point  
Dew Point 61 °F 48 °F 28 °F
Precipitation  
Precipitation 0.51 in 0.03 in 0.00 in 1.02 in
Snowdepth - - - -
Wind  
Wind 24 mph 8 mph 0 mph
Gust Wind 34 mph 27 mph 21 mph
Sea Level Pressure  
Sea Level Pressure 30.42 in 29.97 in 29.09 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 12, 2012 Rise Set
Actual Time 6:32 AM BST 7:22 PM BST
Civil Twilight 5:58 AM BST 7:56 PM BST
Nautical Twilight 5:17 AM BST 8:36 PM BST
Astronomical Twilight 4:34 AM BST 9:19 PM BST
Moon 2:12 AM BST (9/12) 5:18 PM BST (9/12)
Length of Visible Light 13h 57m
Length of Day
12h 50m
Waning Crescent, 15% of the Moon is Illuminated
Sep 12
Waning Crescent
Sep 16
New
Sep 22
First Quarter
Sep 30
Full
Oct 8
Last Quarter

Weather History Calendar

Precipitation Actual month total 1.02 Average Month Total: 2.41
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Rain
Actual:
73 | 55 0.00
Average:
70 | 54 0.07
Rain
Actual:
65 | 54 0.00
Average:
70 | 54 0.08
Partly Cloudy
Actual:
76 | 57 0.00
Average:
70 | 54 0.07
Partly Cloudy
Actual:
77 | 56 0.00
Average:
70 | 54 0.07
Partly Cloudy
Actual:
69 | 51 0.00
Average:
70 | 54 0.07
Scattered Clouds
Actual:
71 | 46 0.00
Average:
70 | 54 0.06
Clear
Actual:
79 | 51 0.00
Average:
69 | 54 0.07
Clear
Actual:
81 | 48 0.00
Average:
69 | 53 0.07
Scattered Clouds
Actual:
82 | 49 0.00
Average:
68 | 53 0.07
Rain
Actual:
70 | 61 0.00
Average:
68 | 53 0.08
Rain
Actual:
66 | 50 0.00
Average:
68 | 52 0.07
Rain
Actual:
66 | 44 0.08
Average:
67 | 52 0.07
Partly Cloudy
Actual:
66 | 44 0.00
Average:
67 | 51 0.08
Partly Cloudy
Actual:
69 | 51 0.00
Average:
66 | 51 0.08
Scattered Clouds
Actual:
73 | 46 0.00
Average:
66 | 51 0.09
Partly Cloudy
Actual:
66 | 55 0.00
Average:
66 | 51 0.08
Rain
Actual:
67 | 55 0.00
Average:
66 | 51 0.09
Rain
Actual:
64 | 46 0.00
Average:
66 | 51 0.09
Scattered Clouds
Actual:
64 | 42 0.00
Average:
65 | 51 0.09
Scattered Clouds
Actual:
64 | 47 0.00
Average:
66 | 51 0.08
Rain
Actual:
62 | 50 0.01
Average:
65 | 51 0.08
Rain
Actual:
62 | 42 0.00
Average:
65 | 51 0.09
Rain
Actual:
53 | 47 0.51
Average:
65 | 51 0.08
Rain
Actual:
60 | 51 0.31
Average:
65 | 51 0.09
Rain
Actual:
62 | 49 0.00
Average:
65 | 51 0.09
Rain
Actual:
60 | 49 0.08
Average:
64 | 51 0.09
Rain
Actual:
63 | 51 0.02
Average:
64 | 51 0.09
Rain
Actual:
64 | 47 0.01
Average:
64 | 51 0.09
Scattered Clouds
Actual:
62 | 46 0.00
Average:
63 | 50 0.09
Partly Cloudy
Actual:
64 | 43 0.00
Average:
63 | 50 0.09
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & Observations

2012 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 73 64 55 57 51 43 82 67 35 30.39 30.30 30.24 17 7 4 16 7 - 0.00 Rain
2 65 60 54 61 56 52 94 86 70 30.30 30.26 30.24 17 7 2 12 9 - 0.00 Rain
3 76 66 57 61 54 46 94 66 30 30.33 30.29 30.24 16 7 4 6 4 - 0.00  
4 77 66 56 61 57 46 94 72 50 30.27 30.23 30.18 14 7 3 10 5 - 0.00  
5 69 60 51 48 45 41 82 56 31 30.42 30.33 30.27 12 8 6 12 6 - 0.00  
6 71 58 46 53 45 39 87 61 29 30.42 30.36 30.27 11 8 6 13 4 22 0.00  
7 79 65 51 52 47 37 94 59 19 30.30 30.25 30.21 17 8 4 12 8 - 0.00  
8 81 64 48 52 45 28 88 55 12 30.23 30.13 30.04 19 10 6 10 4 - 0.00  
9 82 66 49 57 50 43 94 63 18 30.01 29.87 29.80 16 7 6 20 5 - 0.00  
10 70 66 61 60 57 54 88 75 59 29.86 29.83 29.80 19 7 5 22 13 34 0.00 Rain
11 66 58 50 55 45 34 82 58 32 30.04 29.90 29.80 19 9 6 18 13 32 0.00 Rain
12 66 55 44 52 46 41 93 70 44 30.04 29.97 29.89 19 8 6 17 9 29 0.08 Rain
13 66 55 44 50 43 39 85 63 36 30.15 30.09 30.01 19 9 6 16 8 22 0.00  
14 69 61 51 55 49 43 82 64 34 30.04 29.94 29.88 19 8 6 21 15 29 0.00  
15 73 60 46 54 48 45 88 68 37 30.09 30.04 29.98 14 8 6 14 7 - 0.00  
16 66 60 55 54 51 48 94 72 47 30.01 29.92 29.86 19 7 6 17 9 22 0.00  
17 67 61 55 54 49 41 94 68 32 29.95 29.90 29.86 19 7 6 17 10 29 0.00 Rain
18 64 57 46 52 43 34 88 61 30 30.09 29.94 29.83 16 8 6 16 11 - 0.00 Rain
19 64 53 42 43 40 34 87 62 31 30.23 30.18 30.12 19 10 6 16 9 - 0.00  
20 64 56 47 47 45 42 87 67 39 30.22 30.14 30.09 19 9 6 15 7 - 0.00  
21 62 56 50 53 47 43 94 75 44 30.09 29.99 29.92 16 7 4 8 6 - 0.01 Rain
22 62 52 42 47 41 37 93 67 31 30.16 30.10 30.01 19 9 6 9 6 - 0.00 Rain
23 53 50 47 52 46 39 100 84 61 30.09 29.79 29.42 14 6 3 20 8 25 0.51 Rain
24 60 56 51 59 51 46 100 86 57 29.39 29.21 29.09 19 5 1 24 11 34 0.31 Rain
25 62 56 49 50 47 45 88 75 47 29.21 29.19 29.18 19 8 6 22 12 33 0.00 Rain
26 60 54 49 54 50 46 94 85 67 29.50 29.30 29.18 19 8 6 14 8 - 0.08 Rain
27 63 57 51 51 48 45 94 77 43 29.92 29.73 29.50 19 7 5 13 6 - 0.02 Rain
28 64 56 47 54 49 45 94 82 57 29.95 29.91 29.89 19 8 6 17 9 - 0.01 Rain
29 62 54 46 48 43 37 94 70 32 30.18 30.06 29.95 17 8 6 15 8 - 0.00  
30 64 54 43 52 47 39 93 77 55 30.18 30.08 29.98 16 7 6 20 9 25 0.00