Weather History for KBOS - July, 2011

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Thursday, July 21, 2011

  Actual Average Record
Temperature  
Mean Temperature 85 °F 74 °F  
Max Temperature 97 °F 82 °F 102 °F (1977)
Min Temperature 73 °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 64 55  
Since 1 July heating degree days 0 0  
Cooling Degree Days 20 9  
Month to date cooling degree days 265 178  
Year to date cooling degree days 458 344  
Since 1 June cooling degree days 400 314  
Growing Degree Days 35 (Base 50)    
Moisture  
Dew Point 71 °F    
Average Humidity 65    
Maximum Humidity 87    
Minimum Humidity 42    
Precipitation  
Precipitation 0.00 in 0.12 in 2.33 in (1938)
Month to date precipitation 1.61 2.21  
Year to date precipitation 24.88 24.05  
Sea Level Pressure  
Sea Level Pressure 29.72 in    
Wind  
Wind Speed 18 mph (SW)    
Max Wind Speed 31 mph    
Max Gust Speed 38 mph    
Visibility 6 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jul. 21, 2011 Rise Set
Actual Time 5:25 AM EDT 8:14 PM EDT
Civil Twilight 4:52 AM EDT 8:47 PM EDT
Nautical Twilight 4:10 AM EDT 9:29 PM EDT
Astronomical Twilight 3:22 AM EDT 10:17 PM EDT
Moon 11:01 PM EDT (7/21) 11:56 AM EDT (7/21)
Length of Visible Light 15h 55m
Length of Day
14h 49m
Waning Gibbous, 64% of the Moon is Illuminated
Jul 21
Waning Gibbous
Jul 23
Last Quarter
Jul 30
New
Aug 6
First Quarter
Aug 13
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 75.0 °F - 68.0 °F 79% 29.81 in 10.0 mi SW 16.1 mph 21.9 mph N/A   Clear
1:54 AM 73.9 °F - 68.0 °F 82% 29.80 in 7.0 mi SW 13.8 mph - N/A   Partly Cloudy
2:54 AM 73.0 °F - 68.0 °F 84% 29.78 in 7.0 mi SW 11.5 mph - N/A   Scattered Clouds
3:54 AM 73.0 °F - 68.0 °F 84% 29.79 in 6.0 mi SW 10.4 mph - N/A   Haze
4:54 AM 73.0 °F - 68.0 °F 84% 29.78 in 6.0 mi SW 10.4 mph - N/A   Haze
5:54 AM 73.0 °F - 68.0 °F 84% 29.79 in 4.0 mi SW 9.2 mph - N/A   Haze
6:54 AM 73.9 °F - 69.1 °F 85% 29.78 in 4.0 mi SW 12.7 mph - N/A   Haze
7:54 AM 77.0 °F - 70.0 °F 79% 29.78 in 5.0 mi SW 13.8 mph - N/A   Haze
8:54 AM 82.0 °F 86.3 °F 71.1 °F 69% 29.76 in 6.0 mi SW 12.7 mph - N/A   Haze
9:54 AM 84.0 °F 89.6 °F 72.0 °F 67% 29.73 in 6.0 mi SW 18.4 mph - N/A   Haze
10:54 AM 88.0 °F 95.6 °F 73.0 °F 61% 29.72 in 6.0 mi SW 15.0 mph 25.3 mph N/A   Haze
11:54 AM 91.0 °F 99.3 °F 73.0 °F 55% 29.71 in 7.0 mi SW 19.6 mph - N/A   Mostly Cloudy
12:54 PM 93.9 °F 102.1 °F 72.0 °F 49% 29.69 in 8.0 mi SW 19.6 mph - N/A   Mostly Cloudy
1:54 PM 97.0 °F 103.5 °F 70.0 °F 41% 29.66 in 8.0 mi SW 25.3 mph 35.7 mph N/A   Scattered Clouds
2:54 PM 96.1 °F 104.9 °F 72.0 °F 46% 29.65 in 6.0 mi SW 24.2 mph 29.9 mph N/A   Haze
3:54 PM 96.1 °F 105.6 °F 73.0 °F 47% 29.63 in 6.0 mi SW 20.7 mph - N/A   Haze
4:54 PM 95.0 °F 103.2 °F 72.0 °F 47% 29.63 in 5.0 mi SW 24.2 mph 29.9 mph N/A   Haze
5:54 PM 93.0 °F 103.2 °F 73.9 °F 54% 29.65 in 5.0 mi SW 24.2 mph 31.1 mph N/A   Haze
6:54 PM 90.0 °F 99.0 °F 73.9 °F 59% 29.65 in 6.0 mi SW 24.2 mph 33.4 mph N/A   Haze
7:54 PM 89.1 °F 98.0 °F 73.9 °F 61% 29.66 in 6.0 mi SW 21.9 mph 29.9 mph N/A   Haze
8:54 PM 88.0 °F 95.6 °F 73.0 °F 61% 29.68 in 6.0 mi SW 16.1 mph 25.3 mph N/A   Haze
9:54 PM 84.9 °F 91.4 °F 73.0 °F 67% 29.68 in 8.0 mi SW 19.6 mph 27.6 mph N/A   Clear
10:54 PM 84.0 °F 89.6 °F 72.0 °F 67% 29.70 in 8.0 mi SW 18.4 mph - N/A   Clear
11:54 PM 82.9 °F 88.0 °F 72.0 °F 69% 29.70 in 7.0 mi SW 17.3 mph - N/A   Clear