Boston, MA

7:14 PM EDT on April 24, 2017 (GMT -0400)
Logan International

Weather History for KBOS - July, 2012

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Saturday, July 21, 2012

  Actual Average Record
Temperature  
Mean Temperature 68 °F 74 °F  
Max Temperature 74 °F 82 °F 102 °F (1977)
Min Temperature 61 °F 66 °F 52 °F (1890)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 June heating degree days 74 55  
Since 1 July heating degree days 0 0  
Cooling Degree Days 3 9  
Month to date cooling degree days 253 178  
Year to date cooling degree days 447 344  
Since 1 June cooling degree days 388 314  
Growing Degree Days 17 (Base 50)    
Moisture  
Dew Point 57 °F    
Average Humidity 69    
Maximum Humidity 84    
Minimum Humidity 53    
Precipitation  
Precipitation 0.00 in 0.12 in 2.33 in (1938)
Month to date precipitation 1.94 2.21  
Year to date precipitation 18.05 24.05  
Sea Level Pressure  
Sea Level Pressure 30.10 in    
Wind  
Wind Speed 7 mph (ESE)    
Max Wind Speed 13 mph    
Max Gust Speed 15 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jul. 21, 2012 Rise Set
Actual Time 5:26 AM EDT 8:14 PM EDT
Civil Twilight 4:53 AM EDT 8:46 PM EDT
Nautical Twilight 4:11 AM EDT 9:28 PM EDT
Astronomical Twilight 3:23 AM EDT 10:16 PM EDT
Moon 8:08 AM EDT (7/21) 9:19 PM EDT (7/21)
Length of Visible Light 15h 53m
Length of Day
14h 47m
Waxing Crescent, 7% of the Moon is Illuminated
Jul 21
Waxing Crescent
Jul 26
First Quarter
Aug 1
Full
Aug 9
Last Quarter
Aug 17
New

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 64.0 °F 59.0 °F 84% 30.08 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:54 AM 64.0 °F 59.0 °F 84% 30.07 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:54 AM 63.0 °F 57.9 °F 84% 30.06 in 10.0 mi North 3.5 mph - N/A   Scattered Clouds
3:54 AM 62.1 °F 57.0 °F 84% 30.07 in 10.0 mi North 3.5 mph - N/A   Clear
4:54 AM 62.1 °F 57.0 °F 84% 30.08 in 10.0 mi North 3.5 mph - N/A   Scattered Clouds
5:54 AM 61.0 °F 55.9 °F 83% 30.09 in 10.0 mi North 4.6 mph - N/A   Scattered Clouds
6:54 AM 64.0 °F 55.9 °F 75% 30.10 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:54 AM 68.0 °F 57.0 °F 68% 30.11 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:54 AM 70.0 °F 57.0 °F 63% 30.10 in 10.0 mi East 5.8 mph - N/A   Scattered Clouds
9:54 AM 70.0 °F 55.9 °F 61% 30.10 in 10.0 mi East 5.8 mph - N/A   Scattered Clouds
10:54 AM 71.1 °F 59.0 °F 66% 30.11 in 10.0 mi East 5.8 mph - N/A   Scattered Clouds
11:54 AM 71.1 °F 59.0 °F 66% 30.11 in 10.0 mi SE 10.4 mph - N/A   Scattered Clouds
12:54 PM 71.1 °F 60.1 °F 68% 30.11 in 10.0 mi SE 9.2 mph - N/A   Scattered Clouds
1:54 PM 72.0 °F 59.0 °F 64% 30.11 in 10.0 mi SE 11.5 mph - N/A   Scattered Clouds
2:54 PM 73.0 °F 55.9 °F 55% 30.11 in 10.0 mi SE 10.4 mph - N/A   Scattered Clouds
3:54 PM 72.0 °F 55.0 °F 55% 30.10 in 10.0 mi SE 10.4 mph - N/A   Scattered Clouds
4:54 PM 73.0 °F 57.9 °F 59% 30.10 in 10.0 mi ESE 10.4 mph - N/A   Scattered Clouds
5:54 PM 72.0 °F 55.9 °F 57% 30.09 in 10.0 mi ESE 11.5 mph - N/A   Scattered Clouds
6:54 PM 71.1 °F 55.9 °F 59% 30.09 in 10.0 mi ESE 10.4 mph - N/A   Scattered Clouds
7:54 PM 70.0 °F 55.0 °F 59% 30.09 in 10.0 mi SSE 9.2 mph - N/A   Scattered Clouds
8:54 PM 68.0 °F 55.0 °F 63% 30.10 in 10.0 mi SSE 6.9 mph - N/A   Partly Cloudy
9:54 PM 68.0 °F 55.0 °F 63% 30.11 in 10.0 mi South 10.4 mph - N/A   Partly Cloudy
10:54 PM 66.9 °F 55.0 °F 66% 30.12 in 10.0 mi SSW 8.1 mph - N/A   Clear
11:54 PM 66.0 °F 57.0 °F 73% 30.13 in 10.0 mi WSW 4.6 mph - N/A   Clear