Weather History for Chatham, MA

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Sunday, December 9, 2012

  Actual Average Record
Temperature  
Mean Temperature 45 °F -  
Max Temperature 48 °F 44 °F 55 °F (1973)
Min Temperature 42 °F 31 °F 14 °F (1976)
Degree Days  
Heating Degree Days 20    
Moisture  
Dew Point 42 °F    
Average Humidity 87    
Maximum Humidity 100    
Minimum Humidity 58    
Precipitation  
Precipitation 0.08 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.12 in    
Wind  
Wind Speed 4 mph (SW)    
Max Wind Speed 10 mph    
Max Gust Speed 18 mph    
Visibility 6 miles    
Events Fog , Rain    
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. 09, 2012 Rise Set
Actual Time 6:55 AM EST 4:09 PM EST
Civil Twilight 6:24 AM EST 4:40 PM EST
Nautical Twilight 5:49 AM EST 5:15 PM EST
Astronomical Twilight 5:15 AM EST 5:49 PM EST
Moon 2:22 AM EST (12/9) 1:16 PM EST (12/9)
Length of Visible Light 10h 16m
Length of Day
9h 13m
Waning Crescent, 19% of the Moon is Illuminated
Dec 9
Waning Crescent
Dec 13
New
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:18 AM 46.4 °F - 46.4 °F 100% 29.98 in 6.0 mi Calm Calm - N/A   Overcast
12:47 AM 44.6 °F - 44.6 °F 100% 29.98 in 2.5 mi Calm Calm - N/A   Scattered Clouds
12:52 AM 45.0 °F 43.5 °F 44.1 °F 97% 29.99 in 2.5 mi SW 3.5 mph - N/A   Scattered Clouds
1:00 AM 44.6 °F 43.1 °F 44.6 °F 100% 29.99 in 2.5 mi WSW 3.5 mph - N/A   Mostly Cloudy
1:08 AM 46.4 °F 45.2 °F 44.6 °F 93% 29.99 in 4.0 mi WSW 3.5 mph - N/A   Mostly Cloudy
1:17 AM 46.4 °F 44.3 °F 44.6 °F 93% 29.99 in 3.0 mi WSW 4.6 mph - N/A   Overcast
1:22 AM 46.4 °F 43.5 °F 44.6 °F 93% 29.99 in 1.8 mi WSW 5.8 mph - N/A   Overcast
1:38 AM 46.4 °F 44.3 °F 44.6 °F 93% 30.00 in 0.8 mi WSW 4.6 mph - N/A   Mist
1:47 AM 46.4 °F 44.3 °F 44.6 °F 93% 30.00 in 1.0 mi SW 4.6 mph - N/A   Overcast
1:52 AM 46.0 °F 43.9 °F 45.0 °F 96% 30.01 in 1.0 mi SW 4.6 mph - N/A   Overcast
2:08 AM 46.4 °F 43.5 °F 44.6 °F 93% 30.01 in 0.8 mi Variable 5.8 mph - N/A   Mist
2:49 AM 46.4 °F 45.2 °F 44.6 °F 93% 30.03 in 1.2 mi WSW 3.5 mph - N/A   Overcast
2:52 AM 46.0 °F 44.8 °F 45.0 °F 96% 30.04 in 1.2 mi SW 3.5 mph - N/A   Overcast
3:06 AM 46.4 °F 45.2 °F 44.6 °F 93% 30.03 in 0.5 mi SW 3.5 mph - N/A Fog Fog
3:37 AM 46.4 °F - 44.6 °F 93% 30.05 in 2.0 mi Calm Calm - N/A   Overcast
3:44 AM 46.4 °F 45.2 °F 44.6 °F 93% 30.05 in 3.0 mi WSW 3.5 mph - N/A   Mostly Cloudy
3:52 AM 45.0 °F 43.5 °F 44.1 °F 97% 30.06 in 3.0 mi WSW 3.5 mph - N/A   Mostly Cloudy
4:40 AM 44.6 °F - 42.8 °F 93% 30.07 in 2.0 mi Calm Calm - N/A   Mostly Cloudy
4:52 AM 45.0 °F - 44.1 °F 97% 30.08 in 2.5 mi Calm Calm - N/A   Mostly Cloudy
5:26 AM 42.8 °F - 42.8 °F 100% 30.09 in 1.5 mi Calm Calm - N/A   Scattered Clouds
5:45 AM 42.8 °F - 42.8 °F 100% 30.10 in 3.0 mi Calm Calm - N/A   Clear
5:52 AM 42.1 °F - 41.0 °F 96% 30.11 in 3.0 mi Calm Calm - N/A   Clear
6:52 AM 44.1 °F 42.5 °F 42.1 °F 93% 30.15 in 10.0 mi WNW 3.5 mph - 0.01 in   Clear
7:52 AM 45.0 °F 43.5 °F 43.0 °F 93% 30.18 in 10.0 mi Variable 3.5 mph - N/A   Partly Cloudy
8:52 AM 48.0 °F - 42.1 °F 80% 30.21 in 10.0 mi Variable 6.9 mph - N/A   Clear
9:52 AM 48.9 °F - 39.9 °F 71% 30.23 in 10.0 mi Variable 6.9 mph 17.3 mph N/A   Clear
10:52 AM 48.9 °F - 39.0 °F 69% 30.23 in 10.0 mi North 9.2 mph 16.1 mph N/A   Clear
11:52 AM 48.0 °F - 34.0 °F 58% 30.23 in 10.0 mi North 10.4 mph 18.4 mph N/A   Clear
1:52 PM 46.9 °F - 35.1 °F 63% 30.24 in 10.0 mi NNE 5.8 mph - N/A   Partly Cloudy
2:52 PM 46.0 °F 42.5 °F 37.0 °F 71% 30.27 in 10.0 mi NE 6.9 mph - N/A   Partly Cloudy
3:52 PM 46.0 °F 41.9 °F 37.9 °F 73% 30.27 in 10.0 mi ENE 8.1 mph - N/A   Mostly Cloudy
4:52 PM 46.0 °F 43.9 °F 37.0 °F 71% 30.29 in 10.0 mi East 4.6 mph - N/A   Overcast
5:52 PM 46.0 °F 43.1 °F 36.0 °F 68% 30.30 in 10.0 mi East 5.8 mph - N/A   Overcast
6:52 PM 46.0 °F 42.5 °F 37.9 °F 73% 30.29 in 10.0 mi East 6.9 mph - 0.00 in Rain Light Rain
7:52 PM 45.0 °F 41.2 °F 37.9 °F 76% 30.29 in 10.0 mi ENE 6.9 mph - 0.01 in Rain Light Rain
8:52 PM 45.0 °F 40.1 °F 39.9 °F 82% 30.27 in 10.0 mi East 9.2 mph - 0.03 in Rain Light Rain
9:52 PM 45.0 °F 40.1 °F 39.9 °F 82% 30.24 in 10.0 mi ESE 9.2 mph - 0.01 in Rain Light Rain
10:52 PM 46.0 °F 41.0 °F 42.1 °F 86% 30.22 in 10.0 mi East 10.4 mph - 0.01 in   Overcast
11:52 PM 46.0 °F 41.0 °F 42.1 °F 86% 30.18 in 10.0 mi ESE 10.4 mph 18.4 mph 0.01 in Rain Light Rain