Weather History for Philadelphia, PA

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Month of September, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 88 °F 79 °F 66 °F
Mean Temperature 79 °F 71 °F 58 °F
Min Temperature 70 °F 64 °F 50 °F
Degree Days  
Heating Degree Days (base 65) 7 1 0 18
Cooling Degree Days (base 65) 14 7 0 208
Growing Degree Days (base 50) 28 21 8 627
Dew Point  
Dew Point 75 °F 62 °F 39 °F
Precipitation  
Precipitation 3.65 in 0.37 in 0.00 in 10.27 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 29 mph 6 mph 0 mph
Gust Wind 37 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.42 in 30.02 in 29.64 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 07, 2011 Rise Set
Actual Time 6:34 AM EDT 7:23 PM EDT
Civil Twilight 6:06 AM EDT 7:50 PM EDT
Nautical Twilight 5:34 AM EDT 8:22 PM EDT
Astronomical Twilight 5:00 AM EDT 8:56 PM EDT
Moon 4:39 PM EDT (9/7) 1:48 AM EDT (9/7)
Length of Visible Light 13h 43m
Length of Day
12h 48m
Waxing Gibbous, 79% of the Moon is Illuminated
Sep 7
Waxing Gibbous
Sep 12
Full
Sep 20
Last Quarter
Sep 27
New
Oct 3
First Quarter

Weather History Calendar

Precipitation Actual month total 10.27 Normal Month Total: 3.78
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
83 | 63 0.00
Average:
83 | 65 0.10
Partly Cloudy
Actual:
77 | 64 0.00
Average:
83 | 65 0.12
Partly Cloudy
Actual:
83 | 67 0.00
Average:
82 | 65 0.12
Partly Cloudy
Actual:
87 | 69 0.00
Average:
82 | 65 0.12
Rain
Actual:
84 | 66 0.08
Average:
82 | 64 0.12
Rain
Actual:
66 | 61 2.17
Average:
81 | 64 0.11
Rain
Actual:
85 | 66 0.47
Average:
81 | 64 0.12
Thunderstorm
Actual:
75 | 69 3.65
Average:
81 | 63 0.12
Mostly Cloudy
Actual:
84 | 70 0.00
Average:
81 | 63 0.12
Partly Cloudy
Actual:
85 | 69 0.00
Average:
80 | 63 0.11
Thunderstorm
Actual:
80 | 65 0.46
Average:
80 | 62 0.13
Thunderstorm
Actual:
82 | 64 0.02
Average:
80 | 62 0.12
Clear
Actual:
85 | 65 0.00
Average:
79 | 62 0.13
Scattered Clouds
Actual:
88 | 69 0.00
Average:
79 | 61 0.13
Rain
Actual:
77 | 53 0.18
Average:
78 | 61 0.13
Partly Cloudy
Actual:
66 | 50 0.00
Average:
78 | 60 0.13
Partly Cloudy
Actual:
69 | 53 0.00
Average:
78 | 60 0.13
Partly Cloudy
Actual:
70 | 54 0.00
Average:
77 | 60 0.14
Partly Cloudy
Actual:
71 | 53 0.00
Average:
77 | 59 0.13
Rain
Actual:
70 | 60 0.03
Average:
77 | 59 0.13
Rain
Actual:
78 | 60 0.03
Average:
76 | 58 0.13
Rain
Actual:
80 | 69 0.01
Average:
76 | 58 0.13
Rain
Actual:
76 | 69 2.35
Average:
75 | 58 0.12
Rain
Actual:
75 | 68 T
Average:
75 | 57 0.14
Mostly Cloudy
Actual:
82 | 68 T
Average:
75 | 57 0.13
Fog
Actual:
80 | 67 0.00
Average:
74 | 56 0.13
Rain
Actual:
84 | 68 0.19
Average:
74 | 56 0.14
Rain
Actual:
79 | 70 0.44
Average:
73 | 55 0.13
Rain
Actual:
78 | 63 0.04
Average:
73 | 55 0.14
Rain
Actual:
78 | 59 0.15
Average:
72 | 54 0.13
 

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

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 83 73 63 62 59 53 93 68 42 30.19 30.15 30.09 10 10 9 10 2 16 0.00  
2 77 71 64 63 60 58 87 71 54 30.14 30.10 30.06 10 10 10 10 5 12 0.00  
3 83 75 67 67 62 57 81 68 55 30.06 29.99 29.93 10 10 10 14 7 18 0.00  
4 87 78 69 70 67 63 84 71 57 29.95 29.90 29.83 10 10 10 14 7 24 0.00  
5 84 75 66 71 68 64 87 73 59 29.86 29.81 29.76 10 10 7 21 7 24 0.08 Rain
6 66 64 61 64 59 57 97 88 78 30.05 29.98 29.81 10 5 1 21 13 28 2.17 Rain
7 85 76 66 75 68 63 94 78 61 30.02 29.99 29.96 10 6 0 20 8 26 0.47 Rain
8 75 72 69 73 70 64 93 90 87 30.01 29.94 29.87 10 7 1 21 8 26 3.65 Rain , Thunderstorm
9 84 77 70 70 68 66 97 80 62 29.92 29.87 29.81 10 9 2 12 6 17 0.00  
10 85 77 69 72 68 63 93 72 51 30.01 29.90 29.86 10 9 5 15 5 20 0.00  
11 80 73 65 66 65 61 87 77 67 30.11 30.05 30.01 10 9 3 17 6 23 0.46 Rain , Thunderstorm
12 82 73 64 65 62 59 93 70 46 30.07 30.03 29.96 10 7 2 10 5 15 0.02 Rain , Thunderstorm
13 85 75 65 66 62 58 93 68 43 30.00 29.96 29.91 10 9 5 15 7 18 0.00  
14 88 79 69 68 65 62 90 68 45 29.97 29.93 29.89 10 8 4 14 7 17 0.00  
15 77 65 53 68 60 42 90 76 61 30.17 29.94 29.87 10 8 2 29 10 37 0.18 Rain
16 66 58 50 48 41 39 71 56 40 30.36 30.29 30.18 10 10 10 14 6 22 0.00  
17 69 61 53 50 46 43 72 61 49 30.42 30.39 30.35 10 10 10 15 8 25 0.00  
18 70 62 54 51 49 44 77 64 51 30.40 30.36 30.33 10 10 10 17 10 23 0.00  
19 71 62 53 54 50 46 83 64 44 30.32 30.25 30.17 10 10 10 12 5 16 0.00  
20 70 65 60 63 60 54 93 83 73 30.18 30.14 30.10 10 9 5 16 5 20 0.03 Rain
21 78 69 60 67 63 59 100 82 64 30.23 30.19 30.14 10 6 0 10 4 14 0.03 Fog , Rain
22 80 75 69 70 68 66 97 82 67 30.13 30.11 30.09 10 7 1 13 4 21 0.01 Rain
23 76 73 69 72 69 66 100 94 87 30.13 30.04 29.89 10 5 0 21 5 22 2.35 Fog , Rain
24 75 72 68 70 67 65 97 88 79 30.09 30.01 29.92 10 9 5 12 2 13 T Rain
25 82 75 68 69 67 66 97 80 62 30.11 30.07 30.02 10 8 4 8 2 13 T  
26 80 74 67 70 67 65 97 80 62 30.04 30.00 29.94 10 5 0 12 3 23 0.00 Fog
27 84 76 68 70 68 66 97 80 63 29.99 29.95 29.90 10 6 0 15 5 20 0.19 Fog , Rain
28 79 75 70 72 69 68 97 86 74 29.94 29.90 29.82 10 8 2 17 8 24 0.44 Rain
29 78 71 63 70 64 52 93 70 46 29.81 29.73 29.64 10 10 7 24 11 31 0.04 Rain
30 78 69 59 59 54 45 84 62 40 29.76 29.70 29.64 10 10 7 17 7 23 0.15 Rain