Boston, MA

1:03 AM EDT on July 22, 2017 (GMT -0400)
Logan International

Weather History for KBOS - October, 2012

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Sunday, October 21, 2012

  Actual Average Record
Temperature  
Mean Temperature 57 °F 52 °F  
Max Temperature 64 °F 60 °F 82 °F (1920)
Min Temperature 49 °F 45 °F 30 °F (1974)
Degree Days  
Heating Degree Days 8 13  
Month to date heating degree days 169 206  
Since 1 July heating degree days 241 303  
Cooling Degree Days 0 0  
Month to date cooling degree days 6 6  
Year to date cooling degree days 905 746  
Growing Degree Days 6 (Base 50)    
Moisture  
Dew Point 40 °F    
Average Humidity 54    
Maximum Humidity 71    
Minimum Humidity 37    
Precipitation  
Precipitation 0.00 in 0.12 in 1.78 in (1996)
Month to date precipitation 0.97 2.67  
Year to date precipitation 28.14 34.73  
Sea Level Pressure  
Sea Level Pressure 29.84 in    
Wind  
Wind Speed 12 mph (West)    
Max Wind Speed 23 mph    
Max Gust Speed 30 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Date:

Astronomy

Oct. 21, 2012 Rise Set
Actual Time 7:04 AM EDT 5:51 PM EDT
Civil Twilight 6:35 AM EDT 6:20 PM EDT
Nautical Twilight 6:03 AM EDT 6:53 PM EDT
Astronomical Twilight 5:30 AM EDT 7:25 PM EDT
Moon 1:25 PM EDT (10/21) 11:40 PM EDT (10/21)
Length of Visible Light 11h 44m
Length of Day
10h 47m
Waxing Crescent, 45% of the Moon is Illuminated
Oct 21
Waxing Crescent
Oct 21
First Quarter
Oct 29
Full
Nov 6
Last Quarter
Nov 13
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 57.9 °F 41.0 °F 53% 29.76 in 10.0 mi West 13.8 mph - N/A   Clear
1:54 AM 57.0 °F 41.0 °F 55% 29.78 in 10.0 mi West 11.5 mph - N/A   Clear
2:54 AM 55.0 °F 39.9 °F 57% 29.78 in 10.0 mi West 11.5 mph - N/A   Partly Cloudy
3:54 AM 54.0 °F 39.9 °F 59% 29.80 in 10.0 mi West 11.5 mph - N/A   Partly Cloudy
4:54 AM 51.1 °F 41.0 °F 68% 29.81 in 10.0 mi SW 8.1 mph - N/A   Partly Cloudy
5:54 AM 50.0 °F 41.0 °F 71% 29.83 in 10.0 mi SW 9.2 mph - N/A   Partly Cloudy
6:54 AM 51.1 °F 39.9 °F 66% 29.84 in 10.0 mi WSW 8.1 mph - N/A   Scattered Clouds
7:54 AM 51.1 °F 39.0 °F 63% 29.86 in 10.0 mi West 8.1 mph - N/A   Scattered Clouds
8:54 AM 53.1 °F 39.9 °F 61% 29.88 in 10.0 mi WSW 8.1 mph - N/A   Scattered Clouds
9:54 AM 55.9 °F 39.9 °F 55% 29.87 in 10.0 mi West 10.4 mph - N/A   Partly Cloudy
10:54 AM 57.9 °F 39.9 °F 51% 29.87 in 10.0 mi WNW 12.7 mph 21.9 mph N/A   Partly Cloudy
11:54 AM 57.9 °F 41.0 °F 53% 29.86 in 10.0 mi West 13.8 mph 19.6 mph N/A   Mostly Cloudy
12:54 PM 61.0 °F 39.9 °F 46% 29.85 in 10.0 mi West 12.7 mph 20.7 mph N/A   Scattered Clouds
1:54 PM 62.1 °F 39.9 °F 44% 29.83 in 10.0 mi West 16.1 mph 25.3 mph N/A   Scattered Clouds
2:54 PM 64.0 °F 37.9 °F 38% 29.83 in 10.0 mi WNW 15.0 mph 21.9 mph N/A   Scattered Clouds
3:54 PM 63.0 °F 37.0 °F 38% 29.83 in 10.0 mi WNW 16.1 mph - N/A   Scattered Clouds
4:54 PM 62.1 °F 37.0 °F 39% 29.83 in 10.0 mi WNW 17.3 mph 25.3 mph N/A   Scattered Clouds
5:54 PM 61.0 °F 37.9 °F 42% 29.85 in 10.0 mi WNW 12.7 mph 20.7 mph N/A   Mostly Cloudy
6:54 PM 60.1 °F 37.9 °F 44% 29.86 in 10.0 mi WNW 16.1 mph 20.7 mph N/A   Mostly Cloudy
7:54 PM 60.1 °F 37.9 °F 44% 29.86 in 10.0 mi West 13.8 mph 20.7 mph N/A   Partly Cloudy
8:54 PM 57.9 °F 39.0 °F 49% 29.87 in 10.0 mi West 10.4 mph - N/A   Scattered Clouds
9:54 PM 57.0 °F 39.9 °F 53% 29.88 in 10.0 mi West 13.8 mph - N/A   Partly Cloudy
10:54 PM 57.0 °F 39.9 °F 53% 29.88 in 10.0 mi West 11.5 mph - N/A   Scattered Clouds
11:54 PM 55.9 °F 41.0 °F 57% 29.88 in 10.0 mi West 9.2 mph - N/A   Scattered Clouds