Weather History for Chatham, MA

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Saturday, December 15, 2012

  Actual Average Record
Temperature  
Mean Temperature 38 °F -  
Max Temperature 44 °F 43 °F 57 °F (2001)
Min Temperature 32 °F 30 °F 15 °F (1980)
Degree Days  
Heating Degree Days 27    
Moisture  
Dew Point 26 °F    
Average Humidity 64    
Maximum Humidity 85    
Minimum Humidity 51    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.28 in    
Wind  
Wind Speed 3 mph (NNE)    
Max Wind Speed 10 mph    
Max Gust Speed 17 mph    
Visibility 10 miles    
Events      
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 15, 2012 Rise Set
Actual Time 7:00 AM EST 4:10 PM EST
Civil Twilight 6:28 AM EST 4:42 PM EST
Nautical Twilight 5:53 AM EST 5:17 PM EST
Astronomical Twilight 5:19 AM EST 5:50 PM EST
Moon 8:49 AM EST (12/15) 7:12 PM EST (12/15)
Length of Visible Light 10h 13m
Length of Day
9h 10m
Waxing Crescent, 8% of the Moon is Illuminated
Dec 15
Waxing Crescent
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 39.0 °F - 30.0 °F 70% 30.17 in 10.0 mi Calm Calm - N/A   Clear
1:52 AM 39.9 °F - 30.0 °F 68% 30.18 in 10.0 mi Calm Calm - N/A   Clear
2:52 AM 39.0 °F - 30.9 °F 73% 30.19 in 10.0 mi Calm Calm - N/A   Clear
3:52 AM 36.0 °F - 30.0 °F 79% 30.20 in 10.0 mi Calm Calm - N/A   Clear
4:52 AM 32.0 °F 28.7 °F 28.0 °F 85% 30.22 in 10.0 mi West 3.5 mph - N/A   Clear
5:52 AM 35.1 °F 32.2 °F 30.0 °F 82% 30.24 in 10.0 mi NNW 3.5 mph - N/A   Scattered Clouds
6:52 AM 39.0 °F 35.7 °F 27.0 °F 62% 30.25 in 10.0 mi Variable 4.6 mph - N/A   Clear
7:52 AM 39.9 °F 35.8 °F 27.0 °F 60% 30.27 in 10.0 mi Variable 5.8 mph - N/A   Partly Cloudy
8:52 AM 42.1 °F 38.4 °F 28.9 °F 60% 30.28 in 10.0 mi Variable 5.8 mph - N/A   Clear
9:52 AM 44.1 °F 40.1 °F 28.0 °F 53% 30.29 in 10.0 mi Variable 6.9 mph - N/A   Partly Cloudy
10:52 AM 43.0 °F 39.5 °F 28.9 °F 58% 30.29 in 10.0 mi Variable 5.8 mph - N/A   Mostly Cloudy
11:52 AM 43.0 °F 39.5 °F 26.1 °F 51% 30.28 in 10.0 mi North 5.8 mph - N/A   Mostly Cloudy
12:52 PM 42.1 °F 36.1 °F 25.0 °F 51% 30.27 in 10.0 mi NNE 10.4 mph 17.3 mph N/A   Scattered Clouds
1:52 PM 39.9 °F 34.5 °F 26.1 °F 58% 30.28 in 10.0 mi North 8.1 mph - N/A   Mostly Cloudy
2:52 PM 39.0 °F 34.8 °F 27.0 °F 62% 30.28 in 10.0 mi NNE 5.8 mph - N/A   Mostly Cloudy
3:52 PM 37.9 °F 33.5 °F 26.1 °F 62% 30.30 in 10.0 mi NNE 5.8 mph - N/A   Overcast
4:52 PM 36.0 °F 29.6 °F 24.1 °F 62% 30.31 in 10.0 mi NE 8.1 mph - N/A   Scattered Clouds
5:52 PM 36.0 °F 31.1 °F 25.0 °F 64% 30.32 in 10.0 mi NE 5.8 mph - N/A   Mostly Cloudy
6:52 PM 35.1 °F 29.3 °F 24.1 °F 64% 30.33 in 10.0 mi NE 6.9 mph - N/A   Partly Cloudy
7:52 PM 35.1 °F 31.0 °F 23.0 °F 61% 30.34 in 10.0 mi NNE 4.6 mph - N/A   Clear
8:52 PM 35.1 °F 32.2 °F 23.0 °F 61% 30.34 in 10.0 mi NE 3.5 mph - N/A   Clear
9:52 PM 34.0 °F 28.0 °F 21.9 °F 61% 30.34 in 10.0 mi NE 6.9 mph - N/A   Partly Cloudy
10:52 PM 35.1 °F 30.1 °F 21.9 °F 59% 30.34 in 10.0 mi ENE 5.8 mph - N/A   Scattered Clouds
11:52 PM 35.1 °F 31.0 °F 23.0 °F 61% 30.33 in 10.0 mi NE 4.6 mph - N/A   Scattered Clouds