Boston, MA

7:55 PM EDT on June 21, 2018 (GMT -0400)
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Weather History for KBOS - September, 2017

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Wednesday, September 13, 2017

  Actual Average Record
Temperature  
Mean Temperature 71 °F 66 °F  
Max Temperature 78 °F 74 °F 93 °F (1957)
Min Temperature 64 °F 59 °F 45 °F (1985)
Degree Days  
Heating Degree Days 0 2  
Month to date heating degree days 17 16  
Since 1 July heating degree days 29 29  
Cooling Degree Days 6 3  
Month to date cooling degree days 46 52  
Year to date cooling degree days 775 711  
Growing Degree Days 21 (Base 50)    
Moisture  
Dew Point 57 °F    
Average Humidity 62    
Maximum Humidity 76    
Minimum Humidity 47    
Precipitation  
Precipitation 0.03 in 0.11 in 2.30 in (1987)
Month to date precipitation 1.14 1.37  
Year to date precipitation 32.43 29.99  
Sea Level Pressure  
Sea Level Pressure 29.85 in    
Wind  
Wind Speed 9 mph (SW)    
Max Wind Speed 15 mph    
Max Gust Speed 22 mph    
Visibility 10 miles    
Events Rain , Thunderstorm    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Sep. 13, 2017 Rise Set
Actual Time 6:22 AM EDT 6:56 PM EDT
Civil Twilight 5:53 AM EDT 7:24 PM EDT
Nautical Twilight 5:20 AM EDT 7:58 PM EDT
Astronomical Twilight 4:45 AM EDT 8:32 PM EDT
Moon No Moon Rise 2:14 PM EDT (9/13)
Length of Visible Light 13h 31m
Length of Day
12h 34m
Last Quarter, 46% of the Moon is Illuminated
Sep 13
Last Quarter
Sep 20
New
Sep 27
First Quarter
Oct 5
Full
Oct 12
Last Quarter

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 69.1 °F 53.1 °F 57% 29.86 in 10.0 mi West 9.2 mph - N/A   Clear
1:54 AM 68.0 °F 54.0 °F 61% 29.86 in 10.0 mi West 8.1 mph - N/A   Clear
2:54 AM 66.0 °F 54.0 °F 65% 29.86 in 10.0 mi West 10.4 mph - N/A   Clear
3:54 AM 64.9 °F 54.0 °F 68% 29.86 in 10.0 mi WNW 9.2 mph - N/A   Partly Cloudy
4:54 AM 64.9 °F 55.0 °F 70% 29.87 in 10.0 mi West 9.2 mph - N/A   Partly Cloudy
5:54 AM 64.0 °F 54.0 °F 70% 29.88 in 10.0 mi West 11.5 mph - N/A   Partly Cloudy
6:54 AM 64.9 °F 54.0 °F 68% 29.90 in 10.0 mi WNW 9.2 mph - N/A   Partly Cloudy
7:54 AM 66.9 °F 55.0 °F 66% 29.90 in 10.0 mi WNW 5.8 mph - N/A   Partly Cloudy
8:54 AM 70.0 °F 54.0 °F 57% 29.90 in 10.0 mi WNW 5.8 mph - N/A   Partly Cloudy
9:54 AM 73.9 °F 53.1 °F 48% 29.90 in 10.0 mi NW 4.6 mph - N/A   Partly Cloudy
10:54 AM 75.0 °F 55.0 °F 50% 29.89 in 10.0 mi SE 6.9 mph - N/A   Partly Cloudy
11:54 AM 75.0 °F 55.9 °F 51% 29.88 in 10.0 mi SE 8.1 mph - N/A   Partly Cloudy
12:54 PM 75.9 °F 55.0 °F 48% 29.86 in 10.0 mi ESE 9.2 mph - N/A   Partly Cloudy
1:54 PM 77.0 °F 55.0 °F 47% 29.84 in 10.0 mi East 9.2 mph - N/A   Partly Cloudy
2:54 PM 73.9 °F 55.9 °F 53% 29.83 in 10.0 mi ESE 11.5 mph - N/A   Scattered Clouds
3:54 PM 75.9 °F 57.0 °F 52% 29.82 in 10.0 mi ESE 11.5 mph - N/A   Scattered Clouds
4:54 PM 71.1 °F 57.9 °F 63% 29.82 in 10.0 mi ESE 9.2 mph - N/A   Scattered Clouds
5:54 PM 68.0 °F 60.1 °F 76% 29.82 in 10.0 mi NE 4.6 mph - N/A   Mostly Cloudy
6:54 PM 68.0 °F 60.1 °F 76% 29.82 in 10.0 mi NNE 4.6 mph - N/A   Mostly Cloudy
7:54 PM 71.1 °F 60.1 °F 68% 29.83 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
8:54 PM 71.1 °F 61.0 °F 70% 29.83 in 10.0 mi South 8.1 mph - N/A   Scattered Clouds
9:54 PM 71.1 °F 63.0 °F 75% 29.83 in 9.0 mi SW 12.7 mph - 0.03 in   Mostly Cloudy
10:05 PM 71.1 °F 63.0 °F 75% 29.83 in 10.0 mi SW 10.4 mph - 0.00 in Rain , Thunderstorm Light Thunderstorms and Rain
10:24 PM 71.1 °F 64.0 °F 78% 29.83 in 10.0 mi SW 6.9 mph - 0.00 in   Mostly Cloudy
10:54 PM 71.1 °F 62.1 °F 73% 29.84 in 10.0 mi SW 8.1 mph - 0.00 in   Overcast
11:54 PM 71.1 °F 60.1 °F 68% 29.83 in 10.0 mi SW 11.5 mph - N/A   Overcast