Boston, MA

7:40 PM EDT on April 21, 2018 (GMT -0400)
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Weather History for KBOS - January, 2013

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Wednesday, January 9, 2013

  Actual Average Record
Temperature  
Mean Temperature 37 °F 29 °F  
Max Temperature 46 °F 36 °F 64 °F (1937)
Min Temperature 28 °F 22 °F -4 °F (1968)
Degree Days  
Heating Degree Days 28 36  
Month to date heating degree days 310 320  
Since 1 July heating degree days 2140 2314  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 29 °F    
Average Humidity 64    
Maximum Humidity 78    
Minimum Humidity 49    
Precipitation  
Precipitation T in 0.11 in 2.14 in (1884)
Month to date precipitation T 0.99  
Year to date precipitation T 0.99  
Sea Level Pressure  
Sea Level Pressure 30.22 in    
Wind  
Wind Speed 8 mph (SW)    
Max Wind Speed 25 mph    
Max Gust Speed 33 mph    
Visibility 9 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Jan. 09, 2013 Rise Set
Actual Time 7:12 AM EST 4:30 PM EST
Civil Twilight 6:41 AM EST 5:01 PM EST
Nautical Twilight 6:06 AM EST 5:36 PM EST
Astronomical Twilight 5:32 AM EST 6:10 PM EST
Moon 4:48 AM EST (1/9) 2:28 PM EST (1/9)
Length of Visible Light 10h 20m
Length of Day
9h 17m
Waning Crescent, 6% of the Moon is Illuminated
Jan 9
Waning Crescent
Jan 11
New
Jan 18
First Quarter
Jan 26
Full
Feb 3
Last Quarter

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 37.0 °F 33.3 °F 25.0 °F 62% 30.37 in 10.0 mi NNW 4.6 mph - N/A   Clear
1:54 AM 33.1 °F - 24.1 °F 70% 30.38 in 10.0 mi Calm Calm - N/A   Clear
2:54 AM 34.0 °F - 25.0 °F 70% 30.38 in 10.0 mi Calm Calm - N/A   Clear
3:54 AM 33.1 °F - 26.1 °F 75% 30.38 in 10.0 mi Calm Calm - N/A   Clear
4:54 AM 32.0 °F - 27.0 °F 82% 30.36 in 9.0 mi Calm Calm - N/A   Clear
5:54 AM 33.1 °F 30.0 °F 27.0 °F 78% 30.37 in 9.0 mi West 3.5 mph - N/A   Clear
6:54 AM 32.0 °F - 25.0 °F 75% 30.40 in 9.0 mi Calm Calm - N/A   Partly Cloudy
7:54 AM 30.9 °F 27.5 °F 25.0 °F 79% 30.40 in 7.0 mi NW 3.5 mph - N/A   Mostly Cloudy
8:54 AM 36.0 °F - 27.0 °F 70% 30.39 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
9:54 AM 37.0 °F - 30.0 °F 76% 30.38 in 7.0 mi Calm Calm - N/A   Overcast
10:54 AM 37.0 °F 34.5 °F 28.9 °F 73% 30.34 in 7.0 mi South 3.5 mph - N/A   Overcast
11:54 AM 37.9 °F 32.7 °F 28.9 °F 70% 30.27 in 7.0 mi SSE 6.9 mph - N/A   Overcast
12:54 PM 39.0 °F - 28.9 °F 67% 30.22 in 7.0 mi Calm Calm - N/A   Overcast
1:54 PM 44.1 °F 37.4 °F 27.0 °F 51% 30.21 in 10.0 mi SW 13.8 mph - N/A   Overcast
2:54 PM 42.1 °F 36.6 °F 28.0 °F 58% 30.14 in 10.0 mi South 9.2 mph - N/A   Overcast
3:54 PM 43.0 °F 37.2 °F 28.9 °F 58% 30.12 in 10.0 mi SSW 10.4 mph - N/A   Overcast
4:54 PM 42.1 °F 34.2 °F 30.9 °F 65% 30.04 in 10.0 mi SW 16.1 mph 33.4 mph 0.00 in Rain Light Rain
5:04 PM 44.6 °F 38.4 °F 32.0 °F 61% 30.06 in 10.0 mi West 12.7 mph 25.3 mph N/A   Mostly Cloudy
5:54 PM 43.0 °F 35.4 °F 33.1 °F 68% 30.02 in 10.0 mi SW 16.1 mph - N/A   Overcast
6:54 PM 42.1 °F 34.2 °F 33.1 °F 70% 30.01 in 10.0 mi SW 16.1 mph 24.2 mph N/A   Partly Cloudy
7:54 PM 44.1 °F 36.2 °F 34.0 °F 68% 30.01 in 10.0 mi WSW 18.4 mph - N/A   Clear
8:54 PM 44.1 °F 37.1 °F 33.1 °F 65% 30.01 in 10.0 mi WSW 15.0 mph 20.7 mph N/A   Clear
9:54 PM 45.0 °F 38.9 °F 32.0 °F 60% 30.02 in 10.0 mi WSW 12.7 mph 21.9 mph N/A   Clear
10:54 PM 45.0 °F 36.6 °F 30.9 °F 58% 30.02 in 10.0 mi West 21.9 mph 33.4 mph N/A   Clear
11:54 PM 45.0 °F 37.4 °F 27.0 °F 49% 30.04 in 10.0 mi West 18.4 mph 31.1 mph N/A   Clear