Weather History for Chatham, MA

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Thursday, September 12, 2013

  Actual Average Record
Temperature  
Mean Temperature 74 °F -  
Max Temperature 80 °F 69 °F 82 °F (2005)
Min Temperature 69 °F 56 °F 48 °F (1985)
Cooling Degree Days 8    
Growing Degree Days 24 (Base 50)    
Moisture  
Dew Point 68 °F    
Average Humidity 87    
Maximum Humidity 94    
Minimum Humidity 74    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.92 in    
Wind  
Wind Speed 9 mph (SW)    
Max Wind Speed 14 mph    
Max Gust Speed 25 mph    
Visibility 6 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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Astronomy

Sep. 12, 2013 Rise Set
Actual Time 6:17 AM EDT 6:54 PM EDT
Civil Twilight 5:49 AM EDT 7:22 PM EDT
Nautical Twilight 5:16 AM EDT 7:55 PM EDT
Astronomical Twilight 4:42 AM EDT 8:29 PM EDT
Moon 1:47 PM EDT (9/12) 11:40 PM EDT (9/12)
Length of Visible Light 13h 32m
Length of Day
12h 36m
Waxing Crescent, 50% of the Moon is Illuminated
Sep 12
Waxing Crescent
Sep 12
First Quarter
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:18 AM 69.8 °F 68.0 °F 94% 30.02 in 4.0 mi SW 9.2 mph - N/A   Mostly Cloudy
12:27 AM 69.8 °F 68.0 °F 94% 30.03 in 4.0 mi WSW 8.1 mph - N/A   Mostly Cloudy
12:52 AM 70.0 °F 68.0 °F 93% 30.01 in 4.0 mi SW 5.8 mph - N/A   Overcast
1:52 AM 70.0 °F 68.0 °F 93% 30.01 in 4.0 mi SW 5.8 mph - N/A   Overcast
2:52 AM 69.1 °F 66.9 °F 93% 30.00 in 4.0 mi SSW 6.9 mph - N/A   Overcast
3:06 AM 69.8 °F 66.2 °F 88% 29.99 in 4.0 mi SSW 6.9 mph - N/A   Overcast
3:52 AM 69.1 °F 66.9 °F 93% 29.99 in 4.0 mi SSW 5.8 mph - N/A   Overcast
4:28 AM 69.8 °F 68.0 °F 94% 29.98 in 4.0 mi SW 10.4 mph 17.3 mph N/A   Overcast
4:52 AM 70.0 °F 68.0 °F 93% 29.98 in 4.0 mi SW 8.1 mph - N/A   Overcast
4:59 AM 69.8 °F 68.0 °F 94% 29.98 in 4.0 mi SW 9.2 mph 17.3 mph N/A   Overcast
5:52 AM 70.0 °F 66.9 °F 90% 29.98 in 5.0 mi SW 10.4 mph - N/A   Mostly Cloudy
6:07 AM 69.8 °F 66.2 °F 88% 29.97 in 5.0 mi SW 8.1 mph 16.1 mph N/A   Scattered Clouds
6:32 AM 69.8 °F 66.2 °F 88% 29.98 in 3.0 mi SW 10.4 mph - N/A   Mostly Cloudy
6:44 AM 69.8 °F 66.2 °F 88% 29.97 in 3.0 mi SSW 9.2 mph - N/A   Mostly Cloudy
6:52 AM 70.0 °F 66.9 °F 90% 29.98 in 4.0 mi SSW 9.2 mph 16.1 mph N/A   Scattered Clouds
7:48 AM 71.6 °F 68.0 °F 88% 29.98 in 5.0 mi SW 11.5 mph 16.1 mph N/A   Mostly Cloudy
7:52 AM 72.0 °F 68.0 °F 87% 29.98 in 5.0 mi SW 11.5 mph 19.6 mph N/A   Mostly Cloudy
8:19 AM 71.6 °F 68.0 °F 88% 29.97 in 5.0 mi SSW 10.4 mph 16.1 mph N/A   Overcast
8:52 AM 72.0 °F 68.0 °F 87% 29.98 in 5.0 mi SW 9.2 mph 19.6 mph N/A   Overcast
9:52 AM 75.0 °F 69.1 °F 82% 29.97 in 6.0 mi SW 10.4 mph 16.1 mph N/A   Haze
10:23 AM 75.2 °F 69.8 °F 83% 29.96 in 7.0 mi SW 9.2 mph 18.4 mph N/A   Mostly Cloudy
10:52 AM 77.0 °F 69.1 °F 76% 29.95 in 7.0 mi SW 11.5 mph 19.6 mph N/A   Mostly Cloudy
10:57 AM 75.2 °F 69.8 °F 83% 29.94 in 7.0 mi SW 9.2 mph 19.6 mph N/A   Scattered Clouds
11:52 AM 78.1 °F 69.1 °F 74% 29.92 in 8.0 mi SW 11.5 mph 25.3 mph N/A   Clear
12:52 PM 78.1 °F 69.1 °F 74% 29.92 in 8.0 mi SW 12.7 mph 21.9 mph N/A   Clear
1:52 PM 77.0 °F 69.1 °F 76% 29.90 in 7.0 mi SSW 9.2 mph 21.9 mph N/A   Scattered Clouds
2:08 PM 77.0 °F 69.8 °F 78% 29.89 in 7.0 mi SSW 13.8 mph 25.3 mph N/A   Mostly Cloudy
2:52 PM 78.1 °F 70.0 °F 76% 29.88 in 7.0 mi SSW 11.5 mph 20.7 mph N/A   Mostly Cloudy
3:03 PM 75.2 °F 69.8 °F 83% 29.86 in 7.0 mi SSW 11.5 mph 23.0 mph N/A   Mostly Cloudy
3:52 PM 75.9 °F 69.1 °F 79% 29.86 in 7.0 mi SW 13.8 mph 24.2 mph N/A   Mostly Cloudy
4:04 PM 75.2 °F 69.8 °F 83% 29.85 in 8.0 mi SW 10.4 mph 20.7 mph N/A   Scattered Clouds
4:52 PM 73.9 °F 69.1 °F 85% 29.84 in 7.0 mi SSW 10.4 mph 18.4 mph N/A   Clear
5:52 PM 73.0 °F 68.0 °F 84% 29.81 in 7.0 mi SSW 9.2 mph 20.7 mph N/A   Clear
6:13 PM 71.6 °F 68.0 °F 88% 29.81 in 7.0 mi SSW 8.1 mph - N/A   Mostly Cloudy
6:52 PM 71.1 °F 68.0 °F 90% 29.81 in 6.0 mi SSW 10.4 mph 16.1 mph N/A   Scattered Clouds
7:52 PM 71.1 °F 66.9 °F 87% 29.79 in 8.0 mi SSW 9.2 mph - N/A   Clear
8:52 PM 70.0 °F 66.9 °F 90% 29.79 in 8.0 mi SSW 10.4 mph 19.6 mph N/A   Clear
9:52 PM 70.0 °F 66.9 °F 90% 29.78 in 8.0 mi SSW 6.9 mph - N/A   Clear
10:52 PM 69.1 °F 66.9 °F 93% 29.77 in 7.0 mi SSW 8.1 mph 17.3 mph N/A   Clear
11:05 PM 69.8 °F 66.2 °F 88% 29.76 in 7.0 mi SSW 11.5 mph 19.6 mph N/A   Scattered Clouds
11:52 PM 69.1 °F 66.9 °F 93% 29.75 in 7.0 mi SSW 8.1 mph 19.6 mph N/A   Partly Cloudy