Weather History for Williamsport, PA

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Month of September, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 94 °F 76 °F 62 °F
Mean Temperature 80 °F 63 °F 53 °F
Min Temperature 68 °F 50 °F 38 °F
Degree Days  
Heating Degree Days (base 65) 12 4 0 121
Cooling Degree Days (base 65) 15 2 0 74
Growing Degree Days (base 50) 30 13 2 399
Dew Point  
Dew Point 73 °F 51 °F 36 °F
Precipitation  
Precipitation 0.51 in 0.06 in 0.00 in 1.60 in
Snowdepth - - - -
Wind  
Wind 35 mph 4 mph 0 mph
Gust Wind 44 mph 20 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.48 in 30.04 in 29.65 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 17, 2013 Rise Set
Actual Time 6:50 AM EDT 7:13 PM EDT
Civil Twilight 6:22 AM EDT 7:40 PM EDT
Nautical Twilight 5:50 AM EDT 8:13 PM EDT
Astronomical Twilight 5:16 AM EDT 8:46 PM EDT
Moon 5:59 PM EDT (9/17) 4:41 AM EDT (9/17)
Length of Visible Light 13h 17m
Length of Day
12h 22m
Waxing Gibbous, 96% of the Moon is Illuminated
Sep 17
Waxing Gibbous
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter

Weather History Calendar

Precipitation Actual month total 1.60 Normal Month Total: 4.16
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Thunderstorm
Actual:
85 | 68 0.50
Average:
79 | 58 0.13
Thunderstorm
Actual:
89 | 68 T
Average:
78 | 58 0.13
Partly Cloudy
Actual:
78 | 63 0.00
Average:
78 | 58 0.14
Scattered Clouds
Actual:
82 | 57 0.00
Average:
78 | 57 0.13
Partly Cloudy
Actual:
77 | 52 0.00
Average:
77 | 57 0.14
Clear
Actual:
74 | 43 0.00
Average:
77 | 57 0.13
Rain
Actual:
77 | 46 T
Average:
77 | 56 0.14
Partly Cloudy
Actual:
76 | 51 0.00
Average:
76 | 56 0.14
Rain
Actual:
75 | 43 0.10
Average:
76 | 56 0.14
Rain
Actual:
94 | 60 T
Average:
76 | 55 0.14
Thunderstorm
Actual:
91 | 68 0.14
Average:
75 | 55 0.14
Thunderstorm
Actual:
82 | 65 0.51
Average:
75 | 55 0.14
Rain
Actual:
72 | 55 0.01
Average:
75 | 54 0.15
Rain
Actual:
62 | 45 0.01
Average:
74 | 54 0.14
Fog
Actual:
69 | 43 0.00
Average:
74 | 54 0.14
Rain
Actual:
71 | 46 0.03
Average:
74 | 53 0.15
Clear
Actual:
67 | 38 0.00
Average:
73 | 53 0.14
Fog
Actual:
71 | 40 0.00
Average:
73 | 52 0.14
Fog
Actual:
76 | 42 0.00
Average:
72 | 52 0.14
Fog
Actual:
80 | 51 0.00
Average:
72 | 52 0.14
Rain
Actual:
68 | 59 0.30
Average:
72 | 51 0.15
Partly Cloudy
Actual:
65 | 49 0.00
Average:
71 | 51 0.13
Partly Cloudy
Actual:
65 | 43 0.00
Average:
71 | 50 0.14
Fog
Actual:
75 | 40 0.00
Average:
70 | 50 0.14
Fog
Actual:
75 | 44 0.00
Average:
70 | 49 0.14
Fog
Actual:
77 | 44 0.00
Average:
69 | 49 0.13
Partly Cloudy
Actual:
75 | 50 0.00
Average:
69 | 49 0.14
Partly Cloudy
Actual:
72 | 47 0.00
Average:
69 | 48 0.13
Fog
Actual:
73 | 46 0.00
Average:
68 | 48 0.14
Partly Cloudy
Actual:
77 | 46 0.00
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

2013 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 85 77 68 71 68 66 97 78 59 29.85 29.79 29.75 10 7 1 16 2 29 0.50 Thunderstorm
2 89 79 68 70 66 57 93 69 45 29.79 29.75 29.66 10 8 1 14 5 20 T Rain , Thunderstorm
3 78 71 63 64 57 50 87 65 43 29.95 29.84 29.75 10 10 10 16 9 23 0.00  
4 82 70 57 56 54 50 86 61 35 30.05 30.00 29.95 10 10 10 16 8 21 0.00  
5 77 65 52 57 48 38 78 52 25 30.20 30.05 29.97 10 10 10 17 7 23 0.00  
6 74 59 43 45 40 36 89 58 27 30.30 30.22 30.14 10 10 10 9 2 13 0.00  
7 77 62 46 59 49 43 93 67 40 30.14 30.04 29.91 10 10 10 8 2 14 T Rain
8 76 64 51 61 53 42 90 63 36 30.13 29.95 29.88 10 10 10 16 5 23 0.00  
9 75 59 43 61 48 40 93 69 44 30.23 30.16 30.11 10 10 8 17 3 22 0.10 Rain
10 94 77 60 72 65 59 97 72 46 30.15 30.08 30.00 10 9 5 15 2 18 T Rain
11 91 80 68 73 69 65 97 77 56 30.13 30.07 29.99 10 4 1 18 2 26 0.14 Rain , Thunderstorm
12 82 74 65 72 68 63 100 85 69 30.00 29.86 29.73 10 3 0 35 3 44 0.51 Fog , Rain , Thunderstorm
13 72 64 55 62 52 44 97 69 40 29.96 29.81 29.73 10 10 9 22 8 29 0.01 Rain
14 62 54 45 48 44 41 86 67 48 30.17 30.05 29.96 10 10 5 13 5 16 0.01 Rain
15 69 56 43 54 46 41 100 74 48 30.26 30.17 30.06 10 6 0 8 2 13 0.00 Fog
16 71 59 46 56 51 38 100 74 47 30.35 30.14 30.06 10 10 7 15 5 20 0.03 Rain
17 67 53 38 45 39 36 92 63 34 30.48 30.39 30.32 10 10 10 8 2 9 0.00  
18 71 56 40 46 42 37 100 69 37 30.35 30.29 30.16 10 7 0 10 3 14 0.00 Fog
19 76 59 42 56 47 39 96 71 46 30.20 30.15 30.06 10 8 0 8 1 16 0.00 Fog
20 80 66 51 58 54 48 100 73 45 30.09 30.03 29.91 10 6 0 21 5 29 0.00 Fog
21 68 64 59 61 58 55 97 83 68 29.90 29.75 29.65 10 8 2 23 8 31 0.30 Rain
22 65 57 49 57 47 39 100 70 40 29.99 29.83 29.71 10 9 1 16 8 22 0.00  
23 65 54 43 44 40 37 89 65 40 30.12 30.06 30.00 10 10 10 15 6 20 0.00  
24 75 58 40 50 43 37 96 63 29 30.14 30.06 29.95 10 8 0 13 4 16 0.00 Fog
25 75 60 44 53 45 42 100 68 35 30.02 29.98 29.89 10 7 0 9 3 13 0.00 Fog
26 77 61 44 53 47 43 100 71 41 30.10 30.04 29.99 10 8 0 15 3 36 0.00 Fog
27 75 63 50 54 50 48 96 69 41 30.25 30.19 30.12 10 10 10 8 1 12 0.00  
28 72 60 47 53 49 46 93 69 44 30.33 30.27 30.23 10 10 10 9 2 12 0.00  
29 73 60 46 50 47 45 100 69 38 30.23 30.17 30.06 10 6 0 15 3 20 0.00 Fog
30 77 62 46 53 49 44 93 66 38 30.10 30.04 29.95 10 8 1 9 1 10 0.00