Weather History for Chatham, MA

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Friday, September 16, 2011

  Actual Average Record
Temperature  
Mean Temperature 56 °F -  
Max Temperature 63 °F 68 °F 77 °F (1998)
Min Temperature 50 °F 55 °F 44 °F (2001)
Degree Days  
Heating Degree Days 8    
Growing Degree Days 6 (Base 50)    
Moisture  
Dew Point 42 °F    
Average Humidity 60    
Maximum Humidity 86    
Minimum Humidity 43    
Precipitation  
Precipitation 0.01 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.17 in    
Wind  
Wind Speed 9 mph (NW)    
Max Wind Speed 14 mph    
Max Gust Speed 26 mph    
Visibility 10 miles    
Events 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

Sep. 16, 2011 Rise Set
Actual Time 6:20 AM EDT 6:48 PM EDT
Civil Twilight 5:53 AM EDT 7:15 PM EDT
Nautical Twilight 5:20 AM EDT 7:48 PM EDT
Astronomical Twilight 4:46 AM EDT 8:22 PM EDT
Moon 8:31 PM EDT (9/16) 10:27 AM EDT (9/16)
Length of Visible Light 13h 22m
Length of Day
12h 27m
Waning Gibbous, 84% of the Moon is Illuminated
Sep 16
Waning Gibbous
Sep 20
Last Quarter
Sep 27
New
Oct 3
First Quarter
Oct 11
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% 29.93 in 10.0 mi NNW 10.4 mph 21.9 mph 0.01 in Rain Light Rain
1:52 AM 57.9 °F 43.0 °F 58% 29.95 in 10.0 mi NNW 12.7 mph 26.5 mph 0.00 in   Overcast
2:52 AM 57.0 °F 43.0 °F 59% 29.96 in 10.0 mi NNW 8.1 mph 24.2 mph N/A   Clear
3:52 AM 57.0 °F 39.0 °F 51% 30.00 in 10.0 mi NNW 12.7 mph 26.5 mph N/A   Clear
4:52 AM 55.9 °F 39.0 °F 53% 30.03 in 10.0 mi NNW 10.4 mph 24.2 mph N/A   Clear
5:52 AM 54.0 °F 39.9 °F 59% 30.06 in 10.0 mi NW 9.2 mph 17.3 mph N/A   Clear
6:52 AM 54.0 °F 41.0 °F 62% 30.10 in 10.0 mi NW 9.2 mph - N/A   Clear
7:52 AM 55.9 °F 41.0 °F 57% 30.14 in 10.0 mi NNW 9.2 mph 20.7 mph N/A   Clear
8:52 AM 57.0 °F 39.9 °F 53% 30.16 in 10.0 mi NNW 12.7 mph 21.9 mph N/A   Clear
9:52 AM 57.9 °F 41.0 °F 53% 30.19 in 10.0 mi NNW 13.8 mph 25.3 mph N/A   Clear
10:52 AM 59.0 °F 41.0 °F 51% 30.21 in 10.0 mi NW 9.2 mph 20.7 mph N/A   Clear
12:52 PM 61.0 °F 39.0 °F 44% 30.22 in 10.0 mi NW 9.2 mph 23.0 mph N/A   Clear
1:52 PM 62.1 °F 39.0 °F 43% 30.21 in 10.0 mi WNW 9.2 mph 18.4 mph N/A   Clear
3:52 PM 63.0 °F 41.0 °F 45% 30.22 in 10.0 mi Variable 4.6 mph - N/A   Clear
4:52 PM 62.1 °F 39.9 °F 44% 30.24 in 10.0 mi NW 4.6 mph - N/A   Clear
5:52 PM 60.1 °F 42.1 °F 51% 30.26 in 10.0 mi Variable 3.5 mph - N/A   Clear
6:52 PM 55.0 °F 44.1 °F 67% 30.27 in 10.0 mi Calm Calm - N/A   Clear
7:52 PM 52.0 °F 44.1 °F 74% 30.29 in 10.0 mi Calm Calm - N/A   Clear
8:52 PM 52.0 °F 45.0 °F 77% 30.30 in 10.0 mi Calm Calm - N/A   Clear
9:52 PM 53.1 °F 45.0 °F 74% 30.31 in 10.0 mi South 4.6 mph - N/A   Clear
10:52 PM 50.0 °F 46.0 °F 86% 30.33 in 8.0 mi Calm Calm - N/A   Clear
11:52 PM 50.0 °F 46.0 °F 86% 30.34 in 10.0 mi Calm Calm - N/A   Clear