Weather History for Boston, MA

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Thursday, July 17, 2014

  Actual Average Record
Temperature  
Mean Temperature 74 °F 74 °F  
Max Temperature 81 °F 82 °F 98 °F (1977)
Min Temperature 67 °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 28 55  
Since 1 July heating degree days 0 0  
Cooling Degree Days 9 9  
Month to date cooling degree days 190 142  
Year to date cooling degree days 350 308  
Since 1 June cooling degree days 328 278  
Growing Degree Days 24 (Base 50)    
Moisture  
Dew Point 57 °F    
Average Humidity 58    
Maximum Humidity 73    
Minimum Humidity 42    
Precipitation  
Precipitation 0.00 in 0.12 in 1.12 in (1989)
Month to date precipitation 4.11 1.74  
Year to date precipitation 24.68 23.58  
Sea Level Pressure  
Sea Level Pressure 29.94 in    
Wind  
Wind Speed 8 mph (WNW)    
Max Wind Speed 14 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, 2014 Rise Set
Actual Time 5:22 AM EDT 8:17 PM EDT
Civil Twilight 4:48 AM EDT 8:50 PM EDT
Nautical Twilight 4:06 AM EDT 9:33 PM EDT
Astronomical Twilight 3:16 AM EDT 10:22 PM EDT
Moon 11:26 PM EDT (7/17) 11:38 AM EDT (7/17)
Length of Visible Light 16h 02m
Length of Day
14h 55m
Waning Gibbous, 66% of the Moon is Illuminated
Jul 17
Waning Gibbous
Jul 18
Last Quarter
Jul 26
New
Aug 3
First Quarter
Aug 10
Full

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 72.0 °F - 62.1 °F 71% 29.85 in 10.0 mi WNW 9.2 mph - N/A   Mostly Cloudy
1:54 AM 70.0 °F - 61.0 °F 73% 29.86 in 10.0 mi West 8.1 mph - N/A   Clear
2:54 AM 69.1 °F - 59.0 °F 70% 29.86 in 10.0 mi WNW 9.2 mph - N/A   Clear
3:54 AM 68.0 °F - 59.0 °F 73% 29.87 in 10.0 mi WNW 6.9 mph - N/A   Clear
4:54 AM 68.0 °F - 57.9 °F 70% 29.88 in 10.0 mi WNW 10.4 mph - N/A   Clear
5:54 AM 68.0 °F - 57.0 °F 68% 29.89 in 10.0 mi NW 10.4 mph - N/A   Mostly Cloudy
6:54 AM 68.0 °F - 57.0 °F 68% 29.91 in 10.0 mi NW 10.4 mph - N/A   Overcast
7:54 AM 69.1 °F - 55.9 °F 63% 29.92 in 10.0 mi NW 9.2 mph - N/A   Mostly Cloudy
8:54 AM 71.1 °F - 55.9 °F 59% 29.93 in 10.0 mi North 8.1 mph - N/A   Mostly Cloudy
9:54 AM 72.0 °F - 57.0 °F 59% 29.94 in 10.0 mi NNW 8.1 mph - N/A   Mostly Cloudy
10:54 AM 75.0 °F - 57.0 °F 53% 29.94 in 10.0 mi North 4.6 mph - N/A   Mostly Cloudy
11:54 AM 77.0 °F - 57.0 °F 50% 29.95 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:54 PM 73.9 °F - 59.0 °F 59% 29.95 in 10.0 mi SE 8.1 mph - N/A   Mostly Cloudy
1:54 PM 75.0 °F - 57.9 °F 55% 29.94 in 10.0 mi ESE 9.2 mph - N/A   Mostly Cloudy
2:54 PM 75.9 °F - 59.0 °F 56% 29.94 in 10.0 mi SE 8.1 mph - N/A   Mostly Cloudy
3:54 PM 72.0 °F - 57.0 °F 59% 29.94 in 10.0 mi ESE 10.4 mph - N/A   Mostly Cloudy
4:54 PM 70.0 °F - 59.0 °F 68% 29.95 in 10.0 mi SE 9.2 mph - N/A   Mostly Cloudy
5:54 PM 79.0 °F - 55.0 °F 44% 29.95 in 10.0 mi Variable 6.9 mph - N/A   Mostly Cloudy
6:37 PM 80.6 °F 80.5 °F 55.4 °F 42% 29.96 in 10.0 mi WNW 12.7 mph - N/A   Mostly Cloudy
6:54 PM 80.1 °F 80.1 °F 55.0 °F 42% 29.97 in 10.0 mi WNW 11.5 mph - N/A   Mostly Cloudy
7:54 PM 78.1 °F - 54.0 °F 43% 29.99 in 10.0 mi West 10.4 mph - N/A   Scattered Clouds
8:54 PM 78.1 °F - 55.9 °F 46% 30.01 in 10.0 mi West 5.8 mph - N/A   Mostly Cloudy
9:54 PM 73.0 °F - 55.9 °F 55% 30.04 in 10.0 mi SSW 8.1 mph - N/A   Overcast
10:54 PM 73.9 °F - 55.9 °F 53% 30.05 in 10.0 mi West 6.9 mph - N/A   Overcast
11:54 PM 73.0 °F - 55.0 °F 53% 30.07 in 10.0 mi West 6.9 mph - N/A   Mostly Cloudy