Weather History for Boston, MA

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Wednesday, July 31, 2013

  Actual Average Record
Temperature  
Mean Temperature 74 °F 74 °F  
Max Temperature 79 °F 81 °F 98 °F (1917)
Min Temperature 68 °F 66 °F 54 °F (1895)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 2 0  
Since 1 June heating degree days 27 61  
Since 1 July heating degree days 2 6  
Cooling Degree Days 9 9  
Month to date cooling degree days 383 266  
Year to date cooling degree days 592 432  
Since 1 June cooling degree days 554 402  
Growing Degree Days 24 (Base 50)    
Moisture  
Dew Point 59 °F    
Average Humidity 62    
Maximum Humidity 79    
Minimum Humidity 45    
Precipitation  
Precipitation 0.00 in 0.13 in 1.85 in (1876)
Month to date precipitation 3.61 3.43  
Year to date precipitation 28.36 25.27  
Sea Level Pressure  
Sea Level Pressure 30.08 in    
Wind  
Wind Speed 8 mph (ESE)    
Max Wind Speed 15 mph    
Max Gust Speed 18 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jul. 31, 2013 Rise Set
Actual Time 5:35 AM EDT 8:04 PM EDT
Civil Twilight 5:03 AM EDT 8:36 PM EDT
Nautical Twilight 4:24 AM EDT 9:15 PM EDT
Astronomical Twilight 3:39 AM EDT 9:59 PM EDT
Moon 12:29 AM EDT (7/31) 3:18 PM EDT (7/31)
Length of Visible Light 15h 32m
Length of Day
14h 28m
Waning Crescent, 32% of the Moon is Illuminated
Jul 31
Waning Crescent
Aug 6
New
Aug 14
First Quarter
Aug 20
Full
Aug 28
Last 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 73.0 °F 57.0 °F 57% 30.07 in 10.0 mi WNW 8.1 mph - N/A   Clear
1:54 AM 71.1 °F 57.0 °F 61% 30.07 in 10.0 mi WNW 8.1 mph - N/A   Clear
2:54 AM 70.0 °F 57.0 °F 63% 30.08 in 10.0 mi West 4.6 mph - N/A   Clear
3:54 AM 69.1 °F 57.0 °F 65% 30.08 in 10.0 mi West 5.8 mph - N/A   Partly Cloudy
4:54 AM 68.0 °F 57.0 °F 68% 30.09 in 10.0 mi West 8.1 mph - N/A   Partly Cloudy
5:54 AM 68.0 °F 57.0 °F 68% 30.11 in 10.0 mi WNW 6.9 mph - N/A   Partly Cloudy
6:54 AM 69.1 °F 57.0 °F 65% 30.13 in 10.0 mi NW 8.1 mph - N/A   Scattered Clouds
7:54 AM 73.0 °F 55.9 °F 55% 30.13 in 10.0 mi North 5.8 mph - N/A   Scattered Clouds
8:54 AM 73.9 °F 55.0 °F 52% 30.13 in 10.0 mi North 8.1 mph - N/A   Scattered Clouds
9:54 AM 77.0 °F 55.0 °F 47% 30.12 in 10.0 mi NNE 5.8 mph - N/A   Partly Cloudy
10:54 AM 78.1 °F 55.9 °F 46% 30.11 in 10.0 mi East 6.9 mph - N/A   Scattered Clouds
11:54 AM 75.0 °F 60.1 °F 60% 30.11 in 10.0 mi SE 12.7 mph - N/A   Scattered Clouds
12:54 PM 75.9 °F 57.9 °F 54% 30.09 in 10.0 mi ESE 10.4 mph - N/A   Mostly Cloudy
1:54 PM 75.0 °F 62.1 °F 64% 30.09 in 10.0 mi East 10.4 mph - N/A   Mostly Cloudy
2:54 PM 77.0 °F 57.0 °F 50% 30.08 in 10.0 mi ESE 9.2 mph - N/A   Mostly Cloudy
3:54 PM 75.9 °F 57.9 °F 54% 30.07 in 10.0 mi East 11.5 mph - N/A   Mostly Cloudy
4:54 PM 75.0 °F 60.1 °F 60% 30.06 in 10.0 mi ESE 13.8 mph - N/A   Mostly Cloudy
5:54 PM 75.0 °F 62.1 °F 64% 30.06 in 10.0 mi ESE 12.7 mph - N/A   Overcast
6:54 PM 73.9 °F 61.0 °F 64% 30.05 in 10.0 mi SE 9.2 mph - N/A   Overcast
7:54 PM 72.0 °F 63.0 °F 73% 30.05 in 10.0 mi ESE 3.5 mph - N/A   Overcast
8:54 PM 71.1 °F 64.0 °F 78% 30.04 in 10.0 mi SE 5.8 mph - N/A   Mostly Cloudy
9:54 PM 71.1 °F 63.0 °F 75% 30.05 in 10.0 mi South 4.6 mph - N/A   Mostly Cloudy
10:54 PM 71.1 °F 62.1 °F 73% 30.05 in 10.0 mi SSW 6.9 mph - N/A   Mostly Cloudy
11:54 PM 70.0 °F 62.1 °F 76% 30.06 in 10.0 mi South 6.9 mph - N/A   Mostly Cloudy