Weather History for Boston, MA

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Friday, September 9, 2011

  Actual Average Record
Temperature  
Mean Temperature 70 °F 67 °F  
Max Temperature 81 °F 75 °F 91 °F (1971)
Min Temperature 58 °F 60 °F 45 °F (1938)
Degree Days  
Heating Degree Days 0 1  
Month to date heating degree days 8 9  
Since 1 July heating degree days 8 22  
Cooling Degree Days 5 4  
Month to date cooling degree days 42 40  
Year to date cooling degree days 906 699  
Growing Degree Days 18 (Base 50)    
Moisture  
Dew Point 58 °F    
Average Humidity 70    
Maximum Humidity 100    
Minimum Humidity 39    
Precipitation  
Precipitation 0.00 in 0.11 in 2.19 in (1969)
Month to date precipitation 2.15 0.93  
Year to date precipitation 35.20 29.55  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2002)
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 0.0 0.0  
Since 1 September snowfall 0.0 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.83 in    
Wind  
Wind Speed 8 mph (NNW)    
Max Wind Speed 16 mph    
Max Gust Speed 21 mph    
Visibility 7 miles    
Events Fog    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 09, 2011 Rise Set
Actual Time 6:17 AM EDT 7:04 PM EDT
Civil Twilight 5:48 AM EDT 7:33 PM EDT
Nautical Twilight 5:15 AM EDT 8:06 PM EDT
Astronomical Twilight 4:39 AM EDT 8:41 PM EDT
Moon 5:30 PM EDT (9/9) 3:31 AM EDT (9/9)
Length of Visible Light 13h 44m
Length of Day
12h 47m
Waxing Gibbous, 93% of the Moon is Illuminated
Sep 9
Waxing Gibbous
Sep 12
Full
Sep 20
Last Quarter
Sep 27
New
Oct 3
First Quarter

Hourly Weather History & Observations

Time (EDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:07 AM 60.8 °F - 57.2 °F 88% 29.95 in 10.0 mi NNW 3.5 mph - N/A   Mostly Cloudy
12:32 AM 60.8 °F - 59.0 °F 94% 29.95 in 10.0 mi NNW 3.5 mph - N/A   Overcast
12:54 AM 61.0 °F - 59.0 °F 93% 29.94 in 10.0 mi NNW 3.5 mph - N/A   Scattered Clouds
1:54 AM 61.0 °F - 59.0 °F 93% 29.91 in 10.0 mi NNW 5.8 mph - N/A   Mostly Cloudy
2:54 AM 59.0 °F - 57.9 °F 96% 29.92 in 5.0 mi ESE 3.5 mph - N/A   Overcast
3:13 AM 60.8 °F - 57.2 °F 88% 29.91 in 6.0 mi Calm Calm - N/A   Scattered Clouds
3:28 AM 59.0 °F - 57.2 °F 94% 29.91 in 0.8 mi Calm Calm - N/A   Mist
3:47 AM 59.0 °F - 57.2 °F 94% 29.89 in 0.5 mi Calm Calm - N/A Fog Fog
3:54 AM 57.9 °F - 57.9 °F 100% 29.88 in 0.2 mi Calm Calm - N/A Fog Fog
4:54 AM 60.1 °F - 59.0 °F 96% 29.86 in 0.2 mi NNW 6.9 mph - N/A   Overcast
5:23 AM 60.8 °F - 59.0 °F 94% 29.85 in 0.2 mi NNW 6.9 mph - N/A Fog Fog
5:54 AM 60.1 °F - 59.0 °F 96% 29.84 in 0.2 mi North 5.8 mph - N/A   Overcast
6:54 AM 61.0 °F - 60.1 °F 97% 29.83 in 0.2 mi NW 8.1 mph - N/A   Overcast
7:26 AM 62.6 °F - 60.8 °F 94% 29.83 in 2.0 mi NNW 6.9 mph - N/A   Mostly Cloudy
7:44 AM 62.6 °F - 60.8 °F 94% 29.83 in 10.0 mi North 6.9 mph - N/A   Mostly Cloudy
7:54 AM 62.1 °F - 61.0 °F 96% 29.83 in 10.0 mi NNW 5.8 mph - N/A   Mostly Cloudy
8:54 AM 66.0 °F - 62.1 °F 87% 29.81 in 10.0 mi NNW 10.4 mph - N/A   Mostly Cloudy
9:54 AM 70.0 °F - 62.1 °F 76% 29.81 in 10.0 mi North 12.7 mph - N/A   Mostly Cloudy
10:54 AM 73.0 °F - 57.0 °F 57% 29.79 in 10.0 mi North 12.7 mph - N/A   Mostly Cloudy
11:54 AM 75.9 °F - 57.9 °F 54% 29.78 in 10.0 mi North 11.5 mph - N/A   Mostly Cloudy
12:54 PM 73.0 °F - 60.1 °F 64% 29.77 in 10.0 mi East 9.2 mph - N/A   Mostly Cloudy
1:54 PM 71.1 °F - 59.0 °F 66% 29.76 in 10.0 mi East 6.9 mph - N/A   Mostly Cloudy
2:54 PM 73.0 °F - 60.1 °F 64% 29.75 in 10.0 mi SE 6.9 mph - N/A   Scattered Clouds
3:54 PM 79.0 °F - 60.1 °F 52% 29.73 in 10.0 mi WNW 11.5 mph - N/A   Scattered Clouds
4:54 PM 80.1 °F 80.1 °F 55.0 °F 42% 29.73 in 10.0 mi WNW 10.4 mph - N/A   Partly Cloudy
5:54 PM 80.1 °F 79.9 °F 53.1 °F 39% 29.73 in 10.0 mi West 11.5 mph 19.6 mph N/A   Partly Cloudy
6:54 PM 77.0 °F - 54.0 °F 45% 29.74 in 10.0 mi WNW 8.1 mph - N/A   Partly Cloudy
7:54 PM 75.9 °F - 55.9 °F 50% 29.77 in 10.0 mi WSW 6.9 mph - N/A   Partly Cloudy
8:54 PM 73.9 °F - 55.9 °F 53% 29.79 in 10.0 mi WNW 6.9 mph - N/A   Partly Cloudy
9:54 PM 73.0 °F - 55.9 °F 55% 29.80 in 10.0 mi WNW 10.4 mph - N/A   Partly Cloudy
10:54 PM 71.1 °F - 55.0 °F 57% 29.82 in 10.0 mi WNW 9.2 mph - N/A   Partly Cloudy
11:54 PM 72.0 °F - 54.0 °F 53% 29.82 in 10.0 mi WNW 9.2 mph - N/A   Partly Cloudy