Weather History for Chatham, MA

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Tuesday, December 4, 2012

  Actual Average Record
Temperature  
Mean Temperature 45 °F -  
Max Temperature 54 °F 44 °F 63 °F (1998)
Min Temperature 36 °F 32 °F 14 °F (1976)
Degree Days  
Heating Degree Days 20    
Moisture  
Dew Point 44 °F    
Average Humidity 90    
Maximum Humidity 97    
Minimum Humidity 77    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.26 in    
Wind  
Wind Speed 4 mph (South)    
Max Wind Speed 9 mph    
Max Gust Speed 21 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. 04, 2012 Rise Set
Actual Time 6:50 AM EST 4:09 PM EST
Civil Twilight 6:19 AM EST 4:40 PM EST
Nautical Twilight 5:45 AM EST 5:15 PM EST
Astronomical Twilight 5:11 AM EST 5:49 PM EST
Moon 9:57 PM EST (12/4) 10:40 AM EST (12/4)
Length of Visible Light 10h 20m
Length of Day
9h 18m
Waning Gibbous, 69% of the Moon is Illuminated
Dec 4
Waning Gibbous
Dec 6
Last Quarter
Dec 13
New
Dec 20
First Quarter
Dec 28
Full

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 37.0 °F - 35.1 °F 93% 30.31 in 8.0 mi Calm Calm - N/A   Partly Cloudy
1:52 AM 36.0 °F - 34.0 °F 93% 30.31 in 10.0 mi Calm Calm - N/A   Clear
2:52 AM 37.0 °F - 35.1 °F 93% 30.31 in 9.0 mi Calm Calm - N/A   Clear
3:52 AM 37.9 °F - 36.0 °F 93% 30.31 in 9.0 mi Calm Calm - N/A   Clear
4:52 AM 42.1 °F - 41.0 °F 96% 30.32 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:21 AM 42.8 °F - 41.0 °F 93% 30.32 in 9.0 mi Calm Calm - N/A   Mostly Cloudy
5:52 AM 43.0 °F - 41.0 °F 93% 30.33 in 10.0 mi Calm Calm - N/A   Partly Cloudy
6:52 AM 45.0 °F 43.5 °F 43.0 °F 93% 30.35 in 10.0 mi SE 3.5 mph - N/A   Clear
7:52 AM 46.9 °F - 46.0 °F 97% 30.35 in 10.0 mi SSE 3.5 mph - N/A   Partly Cloudy
8:52 AM 48.9 °F - 46.0 °F 90% 30.35 in 10.0 mi SSE 8.1 mph - N/A   Clear
9:52 AM 51.1 °F - 46.0 °F 83% 30.35 in 10.0 mi South 6.9 mph - N/A   Clear
10:52 AM 53.1 °F - 46.9 °F 80% 30.32 in 10.0 mi South 9.2 mph - N/A   Clear
11:52 AM 52.0 °F - 46.0 °F 80% 30.30 in 10.0 mi South 9.2 mph 18.4 mph N/A   Partly Cloudy
12:52 PM 54.0 °F - 46.9 °F 77% 30.28 in 10.0 mi SSW 8.1 mph - N/A   Overcast
1:52 PM 51.1 °F - 46.0 °F 83% 30.26 in 10.0 mi South 9.2 mph - N/A   Overcast
2:52 PM 51.1 °F - 46.0 °F 83% 30.25 in 10.0 mi South 8.1 mph - N/A   Overcast
3:52 PM 50.0 °F - 46.0 °F 86% 30.24 in 10.0 mi South 6.9 mph - N/A   Overcast
4:52 PM 50.0 °F - 46.9 °F 89% 30.23 in 10.0 mi South 9.2 mph 17.3 mph N/A   Overcast
6:52 PM 50.0 °F - 48.0 °F 93% 30.20 in 10.0 mi South 9.2 mph - N/A   Overcast
7:52 PM 48.9 °F - 48.0 °F 97% 30.18 in 10.0 mi Variable 6.9 mph - N/A   Clear
8:52 PM 50.0 °F - 48.0 °F 93% 30.15 in 10.0 mi South 9.2 mph 18.4 mph N/A   Partly Cloudy
9:52 PM 50.0 °F - 48.0 °F 93% 30.12 in 10.0 mi South 9.2 mph 20.7 mph N/A   Clear
10:52 PM 52.0 °F - 48.9 °F 89% 30.10 in 10.0 mi South 8.1 mph - N/A   Mostly Cloudy
11:52 PM 52.0 °F - 48.9 °F 89% 30.08 in 10.0 mi South 6.9 mph - N/A   Overcast