Boston, MA

3:19 AM EDT on June 19, 2018 (GMT -0400)
Logan International

Weather History for KBOS - March, 2015

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Saturday, March 21, 2015

  Actual Average Record
Temperature  
Mean Temperature 35 °F 40 °F  
Max Temperature 41 °F 47 °F 83 °F (1921)
Min Temperature 28 °F 32 °F 7 °F (1885)
Degree Days  
Heating Degree Days 30 26  
Month to date heating degree days 689 591  
Since 1 July heating degree days 5004 4633  
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 78    
Maximum Humidity 96    
Minimum Humidity 59    
Precipitation  
Precipitation 0.09 in 0.15 in 2.50 in (1876)
Month to date precipitation 1.88 2.85  
Year to date precipitation 8.82 9.46  
Sea Level Pressure  
Sea Level Pressure 29.99 in    
Wind  
Wind Speed 7 mph (ENE)    
Max Wind Speed 22 mph    
Max Gust Speed 31 mph    
Visibility 5 miles    
Events Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Mar. 21, 2015 Rise Set
Actual Time 6:46 AM EDT 6:57 PM EDT
Civil Twilight 6:18 AM EDT 7:25 PM EDT
Nautical Twilight 5:45 AM EDT 7:58 PM EDT
Astronomical Twilight 5:11 AM EDT 8:31 PM EDT
Moon 7:27 AM EDT (3/21) 8:46 PM EDT (3/21)
Length of Visible Light 13h 07m
Length of Day
12h 11m
New Moon, 2% of the Moon is Illuminated
Mar 21
New Moon
Mar 27
First Quarter
Apr 4
Full
Apr 11
Last Quarter
Apr 18
New

Hourly Weather History & Observations

Time (EDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 28.0 °F - 25.0 °F 88% 30.17 in 4.0 mi Calm Calm - 0.00 in Snow Light Snow
1:02 AM 28.4 °F - 24.8 °F 86% 30.17 in 5.0 mi Calm Calm - 0.00 in Snow Light Snow
1:11 AM 28.4 °F - 24.8 °F 86% 30.17 in 5.0 mi Calm Calm - 0.00 in Snow Light Snow
1:16 AM 28.4 °F - 24.8 °F 86% 30.17 in 4.0 mi Calm Calm - 0.00 in Snow Light Snow
1:54 AM 28.0 °F - 25.0 °F 88% 30.15 in 8.0 mi Calm Calm - 0.00 in Snow Light Snow
2:01 AM 28.4 °F - 26.6 °F 93% 30.15 in 7.0 mi Calm Calm - 0.00 in Snow Light Snow
2:54 AM 28.0 °F - 26.1 °F 92% 30.13 in 9.0 mi Calm Calm - 0.00 in Snow Light Snow
3:33 AM 28.4 °F - 26.6 °F 93% 30.12 in 9.0 mi Calm Calm - 0.00 in Snow Light Snow
3:54 AM 28.0 °F - 26.1 °F 92% 30.12 in 9.0 mi Calm Calm - 0.00 in Snow Light Snow
4:52 AM 28.4 °F 24.6 °F 26.6 °F 93% 30.09 in 9.0 mi NNE 3.5 mph - 0.00 in Snow Light Snow
5:54 AM 28.0 °F 21.7 °F 26.1 °F 92% 30.09 in 5.0 mi North 5.8 mph - 0.00 in Snow Light Snow
6:54 AM 28.0 °F 22.8 °F 25.0 °F 88% 30.07 in 5.0 mi North 4.6 mph - 0.00 in Snow Light Snow
7:18 AM 28.4 °F 24.6 °F 26.6 °F 93% 30.08 in 2.5 mi North 3.5 mph - 0.00 in Snow Light Snow
7:37 AM 28.4 °F 23.3 °F 26.6 °F 93% 30.07 in 2.5 mi North 4.6 mph - 0.00 in Snow Light Snow
7:45 AM 28.4 °F 23.3 °F 26.6 °F 93% 30.06 in 3.0 mi North 4.6 mph - 0.00 in Snow Light Snow
7:54 AM 28.0 °F 24.2 °F 26.1 °F 92% 30.06 in 2.5 mi NNW 3.5 mph - 0.00 in Snow Light Snow
8:07 AM 28.4 °F 24.6 °F 26.6 °F 93% 30.07 in 3.0 mi North 3.5 mph - 0.00 in Snow Light Snow
8:37 AM 28.4 °F 23.3 °F 26.6 °F 93% 30.06 in 2.0 mi North 4.6 mph - 0.00 in Snow Light Snow
8:45 AM 28.4 °F 23.3 °F 26.6 °F 93% 30.06 in 1.5 mi North 4.6 mph - 0.01 in Snow Light Snow
8:54 AM 28.9 °F 25.2 °F 27.0 °F 92% 30.06 in 1.5 mi Variable 3.5 mph - 0.01 in Snow Light Snow
9:54 AM 30.0 °F - 27.0 °F 88% 30.06 in 0.8 mi Calm Calm - 0.03 in Snow Light Snow
10:54 AM 30.9 °F 26.2 °F 28.9 °F 92% 30.05 in 0.8 mi NW 4.6 mph - 0.03 in Snow Light Snow
11:03 AM 30.2 °F 25.4 °F 28.4 °F 93% 30.04 in 1.2 mi NNW 4.6 mph - 0.00 in Snow Light Snow
11:54 AM 33.1 °F - 30.0 °F 89% 30.01 in 1.2 mi Calm Calm - 0.01 in Snow Light Snow
12:10 PM 33.8 °F 30.8 °F 30.2 °F 87% 30.00 in 0.8 mi North 3.5 mph - 0.01 in Snow Light Snow
12:54 PM 33.1 °F 30.0 °F 32.0 °F 96% 29.97 in 1.8 mi ESE 3.5 mph - 0.01 in Snow Light Snow
1:15 PM 33.8 °F 29.6 °F 30.2 °F 87% 29.96 in 2.0 mi ESE 4.6 mph - 0.00 in Snow Light Snow
1:54 PM 33.1 °F 27.7 °F 30.9 °F 92% 29.93 in 2.0 mi ESE 5.8 mph - 0.00 in   Overcast
2:15 PM 33.8 °F 27.7 °F 32.0 °F 93% 29.91 in 2.0 mi ESE 6.9 mph - N/A   Overcast
2:54 PM 35.1 °F 28.6 °F 33.1 °F 92% 29.88 in 2.0 mi ESE 8.1 mph - N/A   Overcast
2:57 PM 35.6 °F 29.2 °F 32.0 °F 87% 29.88 in 4.0 mi ESE 8.1 mph - N/A   Overcast
3:33 PM 35.6 °F 30.7 °F 32.0 °F 87% 29.87 in 7.0 mi ESE 5.8 mph - N/A   Mostly Cloudy
3:54 PM 35.1 °F 27.9 °F 32.0 °F 89% 29.86 in 8.0 mi East 9.2 mph - N/A   Mostly Cloudy
4:54 PM 34.0 °F 25.5 °F 32.0 °F 92% 29.83 in 10.0 mi East 11.5 mph - N/A   Overcast
5:54 PM 34.0 °F 26.0 °F 30.9 °F 89% 29.83 in 10.0 mi ESE 10.4 mph - N/A   Mostly Cloudy
6:17 PM 33.8 °F 25.8 °F 32.0 °F 93% 29.82 in 10.0 mi ESE 10.4 mph - N/A   Mostly Cloudy
6:54 PM 33.1 °F 25.5 °F 30.9 °F 92% 29.81 in 10.0 mi East 9.2 mph - N/A   Mostly Cloudy
7:54 PM 35.1 °F 28.6 °F 33.1 °F 92% 29.81 in 10.0 mi SSE 8.1 mph - N/A   Mostly Cloudy
8:54 PM 34.0 °F 29.8 °F 32.0 °F 92% 29.79 in 10.0 mi South 4.6 mph - 0.00 in   Mostly Cloudy
9:54 PM 37.0 °F 28.9 °F 32.0 °F 82% 29.77 in 10.0 mi SW 12.7 mph - N/A   Overcast
10:54 PM 39.0 °F 31.0 °F 30.9 °F 73% 29.77 in 10.0 mi WSW 13.8 mph - N/A   Partly Cloudy
11:54 PM 39.9 °F 30.8 °F 27.0 °F 60% 29.76 in 10.0 mi West 18.4 mph 27.6 mph N/A   Clear