Weather History for KBOS - May, 2013

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Tuesday, May 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 59 °F 60 °F  
Max Temperature 66 °F 68 °F 93 °F (1921)
Min Temperature 52 °F 51 °F 41 °F (1907)
Degree Days  
Heating Degree Days 6 7  
Month to date heating degree days 164 193  
Since 1 July heating degree days 5280 5574  
Cooling Degree Days 0 1  
Month to date cooling degree days 8 8  
Year to date cooling degree days 8 11  
Growing Degree Days 8 (Base 50)    
Moisture  
Dew Point 55 °F    
Average Humidity 89    
Maximum Humidity 100    
Minimum Humidity 78    
Precipitation  
Precipitation 0.01 in 0.11 in 2.24 in (1889)
Month to date precipitation 1.32 2.22  
Year to date precipitation 12.35 16.89  
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 29.96 in    
Wind  
Wind Speed 10 mph (ENE)    
Max Wind Speed 22 mph    
Max Gust Speed 26 mph    
Visibility 4 miles    
Events Fog , Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

May. 21, 2013 Rise Set
Actual Time 5:16 AM EDT 8:04 PM EDT
Civil Twilight 4:44 AM EDT 8:37 PM EDT
Nautical Twilight 4:02 AM EDT 9:19 PM EDT
Astronomical Twilight 3:14 AM EDT 10:07 PM EDT
Moon 4:11 PM EDT (5/21) 2:47 AM EDT (5/21)
Length of Visible Light 15h 53m
Length of Day
14h 48m
Waxing Gibbous, 84% of the Moon is Illuminated
May 21
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
12:54 AM 61.0 °F 57.9 °F 90% 29.97 in 10.0 mi Calm Calm - N/A   Partly Cloudy
1:54 AM 61.0 °F 57.0 °F 87% 29.96 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:54 AM 59.0 °F 57.0 °F 93% 29.95 in 10.0 mi Calm Calm - N/A   Clear
3:54 AM 57.9 °F 55.9 °F 93% 29.94 in 8.0 mi Calm Calm - N/A   Clear
4:54 AM 57.9 °F 55.9 °F 93% 29.95 in 8.0 mi Calm Calm - N/A   Clear
5:54 AM 57.9 °F 57.0 °F 97% 29.97 in 6.0 mi ENE 5.8 mph - N/A   Scattered Clouds
6:01 AM 59.0 °F 57.2 °F 94% 29.96 in 6.0 mi ENE 6.9 mph - N/A   Mostly Cloudy
6:39 AM 57.2 °F 55.4 °F 94% 29.98 in 2.0 mi ENE 6.9 mph - N/A   Overcast
6:54 AM 57.9 °F 55.9 °F 93% 29.99 in 2.0 mi NE 5.8 mph - N/A   Overcast
7:03 AM 57.2 °F 55.4 °F 94% 29.98 in 0.2 mi East 5.8 mph - N/A   Overcast
7:13 AM 57.2 °F 55.4 °F 94% 29.97 in 0.2 mi East 8.1 mph - N/A Fog Fog
7:18 AM 57.2 °F 57.2 °F 100% 29.97 in 0.0 mi East 6.9 mph - N/A Fog Fog
7:54 AM 57.0 °F 55.9 °F 96% 29.96 in 0.0 mi ESE 5.8 mph - N/A Fog Fog
8:22 AM 57.2 °F 55.4 °F 94% 29.95 in 0.0 mi ESE 8.1 mph - N/A Fog Fog
8:30 AM 57.2 °F 55.4 °F 94% 29.95 in 0.2 mi ESE 8.1 mph - N/A Fog Fog
8:54 AM 57.0 °F 55.9 °F 96% 29.96 in 0.2 mi ENE 6.9 mph - N/A Fog Fog
9:00 AM 57.2 °F 55.4 °F 94% 29.96 in 0.2 mi ENE 6.9 mph - N/A Fog Fog
9:54 AM 59.0 °F 57.0 °F 93% 29.95 in 0.2 mi North 3.5 mph - N/A   Overcast
10:09 AM 60.8 °F 57.2 °F 88% 29.95 in 1.0 mi East 6.9 mph - N/A   Overcast
10:54 AM 60.1 °F 57.0 °F 90% 29.93 in 1.0 mi East 8.1 mph - N/A   Overcast
11:42 AM 62.6 °F 59.0 °F 88% 29.92 in 1.0 mi ENE 6.9 mph - N/A   Mostly Cloudy
11:50 AM 64.4 °F 59.0 °F 83% 29.93 in 2.0 mi NE 15.0 mph - N/A   Mostly Cloudy
11:54 AM 64.0 °F 57.9 °F 80% 29.92 in 2.0 mi NE 13.8 mph - N/A   Mostly Cloudy
12:54 PM 62.1 °F 57.9 °F 86% 29.90 in 2.0 mi East 13.8 mph - N/A   Scattered Clouds
1:01 PM 62.6 °F 57.2 °F 82% 29.90 in 1.0 mi ENE 12.7 mph - N/A   Scattered Clouds
1:54 PM 63.0 °F 57.9 °F 84% 29.91 in 9.0 mi East 13.8 mph - N/A   Scattered Clouds
2:54 PM 62.1 °F 55.0 °F 78% 29.91 in 10.0 mi NE 18.4 mph 25.3 mph N/A   Overcast
3:37 PM 60.8 °F 53.6 °F 77% 29.93 in 10.0 mi NE 15.0 mph 24.2 mph N/A   Overcast
3:54 PM 59.0 °F 53.1 °F 81% 29.93 in 10.0 mi NNE 16.1 mph 26.5 mph N/A   Overcast
4:21 PM 55.4 °F 51.8 °F 88% 29.94 in 10.0 mi ENE 16.1 mph 23.0 mph N/A   Overcast
4:40 PM 55.4 °F 51.8 °F 88% 29.95 in 9.0 mi ENE 13.8 mph 25.3 mph N/A   Overcast
4:54 PM 54.0 °F 51.1 °F 90% 29.96 in 8.0 mi ENE 19.6 mph 23.0 mph N/A   Overcast
5:09 PM 53.6 °F 51.8 °F 94% 29.97 in 1.0 mi ENE 19.6 mph 24.2 mph N/A   Overcast
5:54 PM 53.1 °F 51.1 °F 93% 29.97 in 1.0 mi ENE 17.3 mph 24.2 mph N/A   Overcast
6:29 PM 51.8 °F 51.8 °F 100% 30.00 in 0.2 mi NE 13.8 mph - N/A   Overcast
6:54 PM 52.0 °F 50.0 °F 93% 30.02 in 0.8 mi NE 5.8 mph - N/A   Overcast
7:46 PM 51.8 °F 51.8 °F 100% 30.00 in 3.0 mi NE 8.1 mph - 0.00 in Rain Light Rain
7:54 PM 52.0 °F 51.1 °F 97% 30.00 in 3.0 mi NE 11.5 mph 18.4 mph 0.00 in   Overcast
8:28 PM 51.8 °F 50.0 °F 94% 30.01 in 3.0 mi NE 5.8 mph - 0.00 in   Overcast
8:54 PM 52.0 °F 50.0 °F 93% 30.00 in 3.0 mi NE 9.2 mph - 0.00 in   Overcast
9:54 PM 52.0 °F 50.0 °F 93% 29.97 in 7.0 mi NE 12.7 mph - N/A   Overcast
10:46 PM 51.8 °F 50.0 °F 94% 29.99 in 5.0 mi NE 9.2 mph - 0.00 in   Light Drizzle
10:54 PM 52.0 °F 50.0 °F 93% 29.99 in 5.0 mi NE 13.8 mph - 0.00 in   Light Drizzle
11:54 PM 52.0 °F 50.0 °F 93% 30.00 in 5.0 mi NNE 12.7 mph - 0.00 in   Overcast