Weather History for Chatham, MA

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Monday, September 23, 2013

  Actual Average Record
Temperature  
Mean Temperature 54 °F -  
Max Temperature 61 °F 66 °F 83 °F (1980)
Min Temperature 48 °F 53 °F 45 °F (1998)
Degree Days  
Heating Degree Days 11    
Growing Degree Days 4 (Base 50)    
Moisture  
Dew Point 43 °F    
Average Humidity 65    
Maximum Humidity 83    
Minimum Humidity 47    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.90 in    
Wind  
Wind Speed 7 mph (NW)    
Max Wind Speed 13 mph    
Max Gust Speed 24 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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Astronomy

Sep. 23, 2013 Rise Set
Actual Time 6:28 AM EDT 6:35 PM EDT
Civil Twilight 6:00 AM EDT 7:02 PM EDT
Nautical Twilight 5:28 AM EDT 7:35 PM EDT
Astronomical Twilight 4:55 AM EDT 8:08 PM EDT
Moon 9:00 PM EDT (9/23) 10:48 AM EDT (9/23)
Length of Visible Light 13h 01m
Length of Day
12h 06m
Waning Gibbous, 81% of the Moon is Illuminated
Sep 23
Waning Gibbous
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
Full

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 57.0 °F 46.0 °F 67% 29.81 in 10.0 mi NW 8.1 mph - N/A   Clear
1:52 AM 55.9 °F 45.0 °F 67% 29.82 in 10.0 mi Variable 6.9 mph 16.1 mph N/A   Clear
2:52 AM 55.0 °F 44.1 °F 67% 29.83 in 10.0 mi Variable 5.8 mph - N/A   Clear
3:52 AM 54.0 °F 44.1 °F 69% 29.84 in 10.0 mi NNW 6.9 mph - N/A   Clear
4:52 AM 53.1 °F 43.0 °F 69% 29.84 in 10.0 mi Calm Calm - N/A   Clear
5:52 AM 53.1 °F 42.1 °F 66% 29.86 in 10.0 mi Variable 5.8 mph - N/A   Clear
6:52 AM 53.1 °F 42.1 °F 66% 29.88 in 10.0 mi NW 8.1 mph - N/A   Clear
7:52 AM 54.0 °F 42.1 °F 64% 29.89 in 10.0 mi NNW 9.2 mph - N/A   Clear
8:52 AM 55.9 °F 42.1 °F 60% 29.89 in 10.0 mi NW 11.5 mph 20.7 mph N/A   Clear
9:52 AM 55.0 °F 43.0 °F 64% 29.91 in 10.0 mi NW 9.2 mph 18.4 mph N/A   Scattered Clouds
10:07 AM 55.4 °F 42.8 °F 63% 29.90 in 10.0 mi NW 9.2 mph 21.9 mph N/A   Mostly Cloudy
10:16 AM 55.4 °F 42.8 °F 63% 29.90 in 10.0 mi NW 12.7 mph 24.2 mph N/A   Scattered Clouds
10:52 AM 55.9 °F 42.1 °F 60% 29.90 in 10.0 mi NW 12.7 mph 23.0 mph N/A   Partly Cloudy
11:52 AM 57.9 °F 43.0 °F 58% 29.91 in 10.0 mi NNW 9.2 mph - N/A   Clear
12:52 PM 59.0 °F 42.1 °F 53% 29.91 in 10.0 mi WNW 9.2 mph - N/A   Clear
1:52 PM 59.0 °F 42.1 °F 53% 29.91 in 10.0 mi NW 9.2 mph - N/A   Clear
2:52 PM 60.1 °F 39.9 °F 47% 29.91 in 10.0 mi Variable 5.8 mph - N/A   Clear
3:52 PM 60.1 °F 42.1 °F 51% 29.91 in 10.0 mi Variable 5.8 mph 16.1 mph N/A   Clear
4:52 PM 60.1 °F 43.0 °F 53% 29.91 in 10.0 mi Variable 4.6 mph - N/A   Clear
5:52 PM 57.9 °F 44.1 °F 60% 29.93 in 10.0 mi Variable 3.5 mph - N/A   Clear
6:52 PM 55.0 °F 44.1 °F 67% 29.94 in 10.0 mi Calm Calm - N/A   Clear
7:52 PM 50.0 °F 45.0 °F 83% 29.96 in 10.0 mi Calm Calm - N/A   Clear
8:52 PM 50.0 °F 45.0 °F 83% 29.97 in 10.0 mi Calm Calm - N/A   Clear
9:52 PM 48.9 °F 44.1 °F 83% 29.99 in 10.0 mi Calm Calm - N/A   Clear
10:52 PM 52.0 °F 44.1 °F 74% 29.98 in 10.0 mi Calm Calm - N/A   Clear
11:52 PM 51.1 °F 42.1 °F 71% 29.99 in 10.0 mi NW 4.6 mph - N/A   Clear