Weather History for Boston, MA

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Wednesday, July 17, 2013

  Actual Average Record
Temperature  
Mean Temperature 84 °F 74 °F  
Max Temperature 95 °F 82 °F 98 °F (1977)
Min Temperature 73 °F 66 °F 54 °F (1946)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 June heating degree days 25 55  
Since 1 July heating degree days 0 0  
Cooling Degree Days 19 9  
Month to date cooling degree days 235 142  
Year to date cooling degree days 444 308  
Since 1 June cooling degree days 406 278  
Growing Degree Days 34 (Base 50)    
Moisture  
Dew Point 69 °F    
Average Humidity 67    
Maximum Humidity 87    
Minimum Humidity 47    
Precipitation  
Precipitation 0.00 in 0.12 in 1.12 in (1989)
Month to date precipitation 0.23 1.74  
Year to date precipitation 24.98 23.58  
Sea Level Pressure  
Sea Level Pressure 30.10 in    
Wind  
Wind Speed 8 mph (SSE)    
Max Wind Speed 20 mph    
Max Gust Speed 24 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jul. 17, 2013 Rise Set
Actual Time 5:22 AM EDT 8:17 PM EDT
Civil Twilight 4:49 AM EDT 8:50 PM EDT
Nautical Twilight 4:06 AM EDT 9:32 PM EDT
Astronomical Twilight 3:17 AM EDT 10:22 PM EDT
Moon 3:01 PM EDT (7/17) 12:29 AM EDT (7/17)
Length of Visible Light 16h 01m
Length of Day
14h 55m
Waxing Gibbous, 67% of the Moon is Illuminated
Jul 17
Waxing Gibbous
Jul 22
Full
Jul 29
Last Quarter
Aug 6
New
Aug 14
First Quarter

Hourly Weather History & Observations

Time (EDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 77.0 °F - 68.0 °F 74% 30.15 in 10.0 mi Calm Calm - N/A   Partly Cloudy
1:54 AM 75.0 °F - 68.0 °F 79% 30.14 in 10.0 mi South 3.5 mph - N/A   Partly Cloudy
2:54 AM 73.9 °F - 69.1 °F 85% 30.15 in 10.0 mi Calm Calm - N/A   Clear
3:54 AM 75.0 °F - 68.0 °F 79% 30.14 in 10.0 mi Calm Calm - N/A   Clear
4:54 AM 73.9 °F - 66.9 °F 79% 30.15 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:54 AM 73.9 °F - 68.0 °F 82% 30.17 in 10.0 mi SSW 3.5 mph - N/A   Scattered Clouds
6:54 AM 75.0 °F - 69.1 °F 82% 30.17 in 10.0 mi SSE 4.6 mph - N/A   Partly Cloudy
7:54 AM 78.1 °F - 70.0 °F 76% 30.17 in 10.0 mi SE 3.5 mph - N/A   Partly Cloudy
8:54 AM 80.1 °F 83.2 °F 70.0 °F 71% 30.18 in 10.0 mi SE 5.8 mph - N/A   Partly Cloudy
9:54 AM 82.9 °F 87.5 °F 71.1 °F 67% 30.17 in 10.0 mi SE 4.6 mph - N/A   Scattered Clouds
10:54 AM 86.0 °F 91.5 °F 71.1 °F 61% 30.15 in 10.0 mi SE 8.1 mph - N/A   Scattered Clouds
11:54 AM 87.1 °F 92.8 °F 71.1 °F 59% 30.14 in 10.0 mi SE 9.2 mph - N/A   Scattered Clouds
12:54 PM 91.9 °F 95.9 °F 68.0 °F 45% 30.12 in 10.0 mi SSE 9.2 mph - N/A   Scattered Clouds
1:54 PM 91.9 °F 96.9 °F 69.1 °F 47% 30.10 in 10.0 mi ESE 11.5 mph - N/A   Scattered Clouds
2:54 PM 88.0 °F 92.9 °F 70.0 °F 55% 30.09 in 10.0 mi ENE 9.2 mph - N/A   Scattered Clouds
3:54 PM 89.1 °F 93.7 °F 69.1 °F 52% 30.06 in 10.0 mi SE 9.2 mph - N/A   Partly Cloudy
4:54 PM 90.0 °F 93.6 °F 68.0 °F 48% 30.03 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:54 PM 90.0 °F 96.4 °F 71.1 °F 54% 30.02 in 10.0 mi SSW 16.1 mph - N/A   Scattered Clouds
6:54 PM 87.1 °F 92.8 °F 71.1 °F 59% 30.00 in 10.0 mi SSW 15.0 mph - N/A   Partly Cloudy
7:54 PM 84.0 °F 88.4 °F 70.0 °F 63% 30.01 in 10.0 mi SW 15.0 mph 21.9 mph N/A   Partly Cloudy
8:54 PM 82.9 °F 87.0 °F 70.0 °F 65% 30.03 in 10.0 mi SW 13.8 mph - N/A   Partly Cloudy
9:54 PM 82.0 °F 85.9 °F 70.0 °F 67% 30.02 in 9.0 mi SW 13.8 mph - N/A   Partly Cloudy
10:54 PM 81.0 °F 84.4 °F 70.0 °F 69% 30.03 in 10.0 mi SW 13.8 mph 24.2 mph N/A   Scattered Clouds
11:54 PM 80.1 °F 83.2 °F 70.0 °F 71% 29.99 in 10.0 mi SW 18.4 mph 23.0 mph N/A   Scattered Clouds