Weather History for Chatham, MA

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Week of December 25, 2011 through December 31, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 53 °F 46 °F 32 °F
Mean Temperature 44 °F 37 °F 28 °F
Min Temperature 39 °F 28 °F 21 °F
Degree Days  
Heating Degree Days (base 65) 36 28 20 198
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 54 °F 32 °F 2 °F
Precipitation  
Precipitation 0.22 in 0.09 in 0.00 in 0.65 in
Snowdepth - - - -
Wind  
Wind 21 mph 7 mph 0 mph
Gust Wind 40 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.49 in 29.92 in 29.32 in

Weekly Weather History Graph

Weekly Weather History Graph

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Astronomy

Dec. 29, 2011 Rise Set
Actual Time 7:06 AM EST 4:17 PM EST
Civil Twilight 6:35 AM EST 4:48 PM EST
Nautical Twilight 6:00 AM EST 5:23 PM EST
Astronomical Twilight 5:26 AM EST 5:57 PM EST
Moon 9:54 AM EST (12/29) 9:55 PM EST (12/29)
Length of Visible Light 10h 13m
Length of Day
9h 10m
Waxing Crescent, 26% of the Moon is Illuminated
Dec 29
Waxing Crescent
Jan 1
First Quarter
Jan 9
Full
Jan 16
Last Quarter
Jan 23
New

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  
25 45 33 21 39 28 17 100 76 57 30.49 30.24 29.91 10 9 2 10 3 18 0.17 Rain
26 42 34 27 37 31 22 97 78 59 30.26 30.01 29.82 10 10 8 13 5 24 0.03 Rain
27 52 40 27 50 39 23 96 82 70 30.21 29.95 29.48 10 9 3 17 7 40 0.13 Rain
28 53 42 30 54 41 16 100 82 52 29.64 29.39 29.32 10 8 2 21 14 38 0.10 Rain
29 32 28 25 16 9 2 61 43 28 30.04 29.87 29.66 10 10 10 14 10 26 0.00  
30 46 36 25 45 32 11 93 75 43 30.13 30.10 30.06 10 10 10 14 4 18 0.00  
31 50 44 39 50 46 39 100 97 89 30.06 29.86 29.77 10 4 1 12 5 24 0.22 Rain