Weather History for Williamsport, PA

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Month of September, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 88 °F 74 °F 64 °F
Mean Temperature 76 °F 64 °F 53 °F
Min Temperature 70 °F 53 °F 38 °F
Degree Days  
Heating Degree Days (base 65) 12 3 0 96
Cooling Degree Days (base 65) 11 2 0 68
Growing Degree Days (base 50) 26 14 2 422
Dew Point  
Dew Point 73 °F 55 °F 36 °F
Precipitation  
Precipitation 2.14 in 0.15 in 0.00 in 3.88 in
Snowdepth - - - -
Wind  
Wind 40 mph 4 mph 0 mph
Gust Wind 53 mph 20 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.39 in 30.03 in 29.52 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 21, 2012 Rise Set
Actual Time 6:54 AM EDT 7:05 PM EDT
Civil Twilight 6:27 AM EDT 7:33 PM EDT
Nautical Twilight 5:54 AM EDT 8:05 PM EDT
Astronomical Twilight 5:21 AM EDT 8:38 PM EDT
Moon 1:17 PM EDT (9/21) 11:00 PM EDT (9/21)
Length of Visible Light 13h 06m
Length of Day
12h 11m
Waxing Crescent, 37% of the Moon is Illuminated
Sep 21
Waxing Crescent
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter
Oct 15
New

Weather History Calendar

Precipitation Actual month total 3.88 Normal Month Total: 4.16
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Scattered Clouds
Actual:
88 | 64 0.00
Average:
79 | 58 0.13
Mostly Cloudy
Actual:
76 | 62 0.00
Average:
78 | 58 0.13
Rain
Actual:
75 | 70 0.14
Average:
78 | 58 0.14
Thunderstorm
Actual:
81 | 70 0.14
Average:
78 | 57 0.13
Thunderstorm
Actual:
82 | 63 0.06
Average:
77 | 57 0.14
Thunderstorm
Actual:
84 | 62 0.16
Average:
77 | 57 0.13
Thunderstorm
Actual:
87 | 63 T
Average:
77 | 56 0.14
Rain
Actual:
79 | 56 0.19
Average:
76 | 56 0.14
Fog
Actual:
73 | 54 T
Average:
76 | 56 0.14
Partly Cloudy
Actual:
72 | 47 0.00
Average:
76 | 55 0.14
Scattered Clouds
Actual:
74 | 44 0.00
Average:
75 | 55 0.14
Fog
Actual:
79 | 51 0.00
Average:
75 | 55 0.14
Fog
Actual:
81 | 50 0.00
Average:
75 | 54 0.15
Rain
Actual:
80 | 54 0.04
Average:
74 | 54 0.14
Partly Cloudy
Actual:
73 | 50 0.00
Average:
74 | 54 0.14
Partly Cloudy
Actual:
75 | 49 0.00
Average:
74 | 53 0.15
Fog
Actual:
75 | 49 0.00
Average:
73 | 53 0.14
Rain
Actual:
73 | 59 2.14
Average:
73 | 52 0.14
Partly Cloudy
Actual:
67 | 46 0.00
Average:
72 | 52 0.14
Fog
Actual:
70 | 43 0.00
Average:
72 | 52 0.14
Rain
Actual:
76 | 53 0.01
Average:
72 | 51 0.15
Rain
Actual:
78 | 53 T
Average:
71 | 51 0.13
Partly Cloudy
Actual:
65 | 46 T
Average:
71 | 50 0.14
Rain
Actual:
64 | 42 0.00
Average:
70 | 50 0.14
Rain
Actual:
67 | 38 0.03
Average:
70 | 49 0.14
Rain
Actual:
65 | 56 0.08
Average:
69 | 49 0.13
Rain
Actual:
69 | 57 0.49
Average:
69 | 49 0.14
Rain
Actual:
69 | 55 0.37
Average:
69 | 48 0.13
Mostly Cloudy
Actual:
66 | 48 0.00
Average:
68 | 48 0.14
Rain
Actual:
64 | 47 0.03
Average:
68 | 47 0.14
 

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 88 76 64 65 62 55 93 64 35 30.08 30.03 29.98 10 10 7 9 2 14 0.00  
2 76 69 62 68 63 57 93 81 68 30.08 30.04 30.01 10 10 8 7 2 8 0.00  
3 75 73 70 72 68 66 93 89 84 30.08 30.05 30.02 10 7 2 14 7 18 0.14 Rain
4 81 76 70 73 70 67 97 86 74 30.03 29.90 29.78 10 9 4 15 3 25 0.14 Rain , Thunderstorm
5 82 73 63 73 68 61 93 72 51 29.87 29.82 29.77 10 7 2 9 3 14 0.06 Rain , Thunderstorm
6 84 73 62 68 64 61 93 76 59 29.94 29.88 29.83 10 10 8 15 3 20 0.16 Rain , Thunderstorm
7 87 75 63 68 64 55 100 67 34 29.95 29.89 29.78 10 9 2 12 3 15 T Rain , Thunderstorm
8 79 68 56 68 64 58 100 84 67 29.82 29.68 29.59 10 9 1 40 8 53 0.19 Rain
9 73 64 54 57 55 50 100 76 51 29.99 29.88 29.83 10 7 0 18 5 25 T Fog
10 72 60 47 56 48 38 100 66 31 30.19 30.08 29.99 10 10 10 16 6 24 0.00  
11 74 59 44 58 48 42 93 67 41 30.31 30.26 30.19 10 10 10 10 2 14 0.00  
12 79 65 51 57 52 50 100 81 61 30.39 30.33 30.27 10 5 0 10 3 14 0.00 Fog
13 81 66 50 58 54 48 100 81 40 30.38 30.33 30.24 10 7 0 8 2 10 0.00 Fog
14 80 67 54 59 56 53 100 77 40 30.27 30.19 30.06 10 8 0 15 4 21 0.04 Fog , Rain
15 73 62 50 54 50 46 96 75 31 30.24 30.18 30.12 10 10 7 14 6 20 0.00  
16 75 62 49 54 48 43 100 78 25 30.18 30.13 30.05 10 8 1 13 4 17 0.00  
17 75 62 49 58 50 45 100 78 31 30.14 30.07 29.93 10 7 0 16 4 23 0.00 Fog
18 73 66 59 67 64 52 94 87 72 29.92 29.65 29.52 10 6 0 22 9 35 2.14 Fog , Rain
19 67 57 46 51 46 37 100 75 29 30.19 30.04 29.83 10 9 1 14 3 17 0.00  
20 70 57 43 49 45 42 100 80 34 30.21 30.15 30.04 10 6 0 22 5 31 0.00 Fog
21 76 65 53 60 54 49 89 70 45 30.06 29.99 29.90 10 10 10 21 10 28 0.01 Rain
22 78 66 53 61 58 44 93 73 46 29.93 29.81 29.72 10 10 7 24 10 33 T Rain
23 65 56 46 46 43 38 89 67 30 30.17 30.08 29.94 10 10 10 20 6 25 T  
24 64 53 42 44 41 36 93 71 31 30.21 30.15 30.09 10 10 10 15 4 20 0.00 Rain
25 67 53 38 54 42 36 100 82 34 30.19 30.13 30.06 10 7 0 14 3 18 0.03 Fog , Rain
26 65 61 56 63 59 54 100 93 82 30.08 30.05 30.01 10 5 0 10 1 13 0.08 Fog , Rain
27 69 63 57 63 57 47 100 84 44 30.21 30.12 30.07 10 6 1 12 2 17 0.49 Rain
28 69 62 55 59 56 49 100 86 62 30.12 30.03 29.98 10 8 2 18 6 23 0.37 Rain
29 66 57 48 49 47 42 93 69 33 30.01 29.97 29.92 10 10 10 12 5 16 0.00  
30 64 56 47 51 47 45 100 84 55 29.91 29.87 29.81 10 10 7 16 2 20 0.03 Rain