Boston, MA

3:53 AM EDT on August 20, 2017 (GMT -0400)
Logan International

Weather History for KBOS - May, 2013

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Wednesday, May 22, 2013

  Actual Average Record
Temperature  
Mean Temperature 56 °F 60 °F  
Max Temperature 60 °F 68 °F 93 °F (1959)
Min Temperature 51 °F 52 °F 39 °F (1894)
Degree Days  
Heating Degree Days 9 6  
Month to date heating degree days 173 199  
Since 1 July heating degree days 5289 5580  
Cooling Degree Days 0 1  
Month to date cooling degree days 8 9  
Year to date cooling degree days 8 12  
Growing Degree Days 6 (Base 50)    
Moisture  
Dew Point 52 °F    
Average Humidity 90    
Maximum Humidity 100    
Minimum Humidity 80    
Precipitation  
Precipitation 0.05 in 0.12 in 3.23 in (1920)
Month to date precipitation 1.37 2.34  
Year to date precipitation 12.40 17.01  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2002)
Month to date snowfall 0.0 0.1  
Since 1 July snowfall 63.4 43.9  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 29.95 in    
Wind  
Wind Speed 8 mph (East)    
Max Wind Speed 18 mph    
Max Gust Speed 22 mph    
Visibility 8 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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Date:

Astronomy

May. 22, 2013 Rise Set
Actual Time 5:16 AM EDT 8:05 PM EDT
Civil Twilight 4:43 AM EDT 8:38 PM EDT
Nautical Twilight 4:01 AM EDT 9:20 PM EDT
Astronomical Twilight 3:13 AM EDT 10:09 PM EDT
Moon 5:21 PM EDT (5/22) 3:21 AM EDT (5/22)
Length of Visible Light 15h 55m
Length of Day
14h 49m
Waxing Gibbous, 91% of the Moon is Illuminated
May 22
Waxing Gibbous
May 25
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:45 AM 51.8 °F 50.0 °F 94% 30.06 in 2.0 mi NNW 15.0 mph 20.7 mph 0.00 in Rain Light Rain
12:54 AM 52.0 °F 50.0 °F 93% 30.06 in 2.0 mi NNW 15.0 mph - 0.01 in Rain Light Rain
1:05 AM 51.8 °F 50.0 °F 94% 30.05 in 2.0 mi North 12.7 mph - 0.00 in Rain Light Rain
1:22 AM 51.8 °F 48.2 °F 88% 30.02 in 3.0 mi NNE 11.5 mph - 0.01 in Rain Light Rain
1:54 AM 51.1 °F 48.9 °F 92% 29.96 in 8.0 mi ENE 12.7 mph - 0.01 in   Overcast
2:54 AM 52.0 °F 48.9 °F 89% 29.94 in 10.0 mi ESE 10.4 mph - N/A   Overcast
3:54 AM 52.0 °F 50.0 °F 93% 29.96 in 10.0 mi ESE 5.8 mph - N/A   Overcast
4:54 AM 52.0 °F 50.0 °F 93% 29.93 in 6.0 mi SE 11.5 mph - 0.02 in Rain Light Rain
5:54 AM 53.1 °F 51.1 °F 93% 29.94 in 7.0 mi SE 5.8 mph - 0.01 in   Overcast
6:45 AM 53.6 °F 51.8 °F 94% 29.91 in 10.0 mi SSW 6.9 mph - 0.00 in Rain Light Rain
6:54 AM 53.1 °F 51.1 °F 93% 29.92 in 10.0 mi SSW 8.1 mph - 0.00 in Rain Light Rain
7:01 AM 53.6 °F 51.8 °F 94% 29.92 in 10.0 mi SW 13.8 mph - 0.00 in Rain Light Rain
7:54 AM 55.0 °F 51.1 °F 86% 29.91 in 10.0 mi Calm Calm - 0.00 in   Overcast
8:07 AM 55.4 °F 51.8 °F 88% 29.91 in 10.0 mi SSW 4.6 mph - N/A   Overcast
8:54 AM 57.9 °F 52.0 °F 81% 29.93 in 10.0 mi Variable 3.5 mph - N/A   Overcast
9:54 AM 57.9 °F 53.1 °F 84% 29.94 in 10.0 mi Calm Calm - N/A   Overcast
10:54 AM 59.0 °F 54.0 °F 83% 29.94 in 10.0 mi SE 5.8 mph - N/A   Overcast
11:54 AM 57.9 °F 54.0 °F 87% 29.95 in 10.0 mi ENE 9.2 mph - N/A   Overcast
12:54 PM 57.9 °F 54.0 °F 87% 29.95 in 10.0 mi ENE 11.5 mph - N/A   Overcast
1:11 PM 57.2 °F 53.6 °F 88% 29.95 in 10.0 mi East 11.5 mph - N/A   Overcast
1:54 PM 57.0 °F 53.1 °F 87% 29.95 in 9.0 mi ENE 11.5 mph - N/A   Overcast
2:10 PM 57.2 °F 53.6 °F 88% 29.95 in 10.0 mi ENE 11.5 mph - N/A   Overcast
2:25 PM 57.2 °F 53.6 °F 88% 29.94 in 10.0 mi East 12.7 mph - N/A   Overcast
2:54 PM 57.0 °F 53.1 °F 87% 29.94 in 10.0 mi East 11.5 mph - N/A   Overcast
3:54 PM 55.9 °F 52.0 °F 87% 29.95 in 10.0 mi ESE 12.7 mph - N/A   Overcast
4:54 PM 55.9 °F 52.0 °F 87% 29.94 in 10.0 mi ESE 12.7 mph - N/A   Overcast
5:54 PM 55.9 °F 52.0 °F 87% 29.92 in 10.0 mi East 10.4 mph - N/A   Overcast
6:13 PM 55.4 °F 51.8 °F 88% 29.93 in 10.0 mi East 10.4 mph - N/A   Overcast
6:54 PM 55.0 °F 52.0 °F 89% 29.94 in 10.0 mi East 9.2 mph - N/A   Overcast
7:52 PM 55.4 °F 51.8 °F 88% 29.95 in 10.0 mi ENE 9.2 mph - N/A   Overcast
7:54 PM 55.0 °F 52.0 °F 89% 29.95 in 10.0 mi ENE 9.2 mph - N/A   Overcast
8:33 PM 53.6 °F 51.8 °F 94% 29.96 in 2.5 mi ENE 8.1 mph - N/A   Overcast
8:40 PM 53.6 °F 51.8 °F 94% 29.96 in 2.5 mi ENE 8.1 mph - N/A   Overcast
8:54 PM 54.0 °F 52.0 °F 93% 29.96 in 2.5 mi ENE 9.2 mph - 0.00 in   Light Drizzle
9:02 PM 53.6 °F 53.6 °F 100% 29.95 in 1.5 mi ENE 8.1 mph - 0.00 in   Light Drizzle
9:54 PM 54.0 °F 53.1 °F 97% 29.96 in 1.5 mi ENE 6.9 mph - 0.00 in   Light Drizzle
10:54 PM 54.0 °F 53.1 °F 97% 29.96 in 1.0 mi NE 5.8 mph - 0.01 in   Light Drizzle
11:54 PM 54.0 °F 53.1 °F 97% 29.94 in 1.0 mi NE 5.8 mph - 0.00 in   Overcast