Weather History for Williamsport, PA

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Week of December 11, 2011 through December 17, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 51 °F 43 °F 36 °F
Mean Temperature 45 °F 35 °F 28 °F
Min Temperature 41 °F 26 °F 18 °F
Degree Days  
Heating Degree Days (base 65) 37 30 20 211
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 45 °F 25 °F 15 °F
Precipitation  
Precipitation 0.08 in 0.02 in 0.00 in 0.13 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 30 mph 5 mph 0 mph
Gust Wind 41 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.67 in 30.29 in 29.76 in

Weekly Weather History Graph

Weekly Weather History Graph

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Astronomy

Dec. 16, 2011 Rise Set
Actual Time 7:26 AM EST 4:39 PM EST
Civil Twilight 6:55 AM EST 5:10 PM EST
Nautical Twilight 6:20 AM EST 5:45 PM EST
Astronomical Twilight 5:47 AM EST 6:19 PM EST
Moon 11:14 PM EST (12/16) 11:08 AM EST (12/16)
Length of Visible Light 10h 15m
Length of Day
9h 12m
Waning Gibbous, 65% of the Moon is Illuminated
Dec 16
Waning Gibbous
Dec 17
Last Quarter
Dec 24
New
Jan 1
First Quarter
Jan 9
Full

Daily Weather History & Observations

2011 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
11 36 28 19 20 18 16 88 68 47 30.67 30.60 30.53 10 10 8 7 2 8 0.00  
12 39 29 18 23 19 15 88 66 44 30.60 30.53 30.45 10 8 5 8 1 10 0.00  
13 44 32 19 25 22 17 92 69 45 30.49 30.45 30.39 10 8 4 12 2 15 0.00  
14 44 35 26 36 30 26 92 71 49 30.43 30.34 30.20 10 8 5 16 4 24 0.05 Rain
15 48 45 41 45 40 33 100 80 60 30.17 29.86 29.76 10 6 0 17 8 28 0.08 Fog , Rain
16 51 43 35 34 24 21 86 64 41 30.19 30.10 29.80 10 10 10 30 12 41 0.00  
17 37 32 26 29 22 15 64 56 47 30.21 30.17 30.14 10 10 8 13 6 17 T Snow