Change the Weather History Date:

Tuesday, December 18, 2012

  Actual Average (KBOS) Record (KBOS)
Temperature  
Mean Temperature 46 °F 34 °F  
Max Temperature 50 °F 40 °F 61 °F (1928)
Min Temperature 41 °F 27 °F -6 °F (1919)
Degree Days  
Heating Degree Days 20 31  
Month to date heating degree days 507  
Since 1 July heating degree days 1562  
Cooling Degree Days 0 0  
Month to date cooling degree days 0  
Year to date cooling degree days 747  
Moisture  
Dew Point 44 °F    
Average Humidity 95    
Maximum Humidity 97    
Minimum Humidity 93    
Precipitation  
Precipitation 0.63 in 0.12 in 1.44 in (1951)
Month to date precipitation 2.29  
Year to date precipitation 42.28  
Sea Level Pressure  
Sea Level Pressure 29.52 in    
Wind  
Wind Speed 12 mph (NW)    
Max Wind Speed 20 mph    
Max Gust Speed 26 mph    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

Search for Another Location

Airport or City:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Dec. 18, 2012 Rise Set
Actual Time 7:08 AM EST 4:14 PM EST
Civil Twilight 6:36 AM EST 4:46 PM EST
Nautical Twilight 6:01 AM EST 5:21 PM EST
Astronomical Twilight 5:27 AM EST 5:55 PM EST
Moon 10:40 AM EST (12/18) 10:43 PM EST (12/18)
Length of Visible Light 10h 09m
Length of Day
9h 05m
Waxing Crescent, 34% of the Moon is Illuminated
Dec 18
Waxing Crescent
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 45.0 °F 38.2 °F 43.0 °F 93% 29.76 in - ENE 15.0 mph 25.3 mph 0.04 in   Unknown
1:54 AM 45.0 °F 38.9 °F 43.0 °F 93% 29.73 in - ENE 12.7 mph 21.9 mph 0.09 in   Unknown
2:54 AM 45.0 °F 38.9 °F 44.1 °F 97% 29.70 in - ENE 12.7 mph 24.2 mph 0.09 in   Unknown
3:54 AM 45.0 °F 38.2 °F 44.1 °F 97% 29.67 in - ENE 15.0 mph 23.0 mph 0.07 in   Unknown
4:54 AM 46.0 °F 40.2 °F 44.1 °F 93% 29.63 in - ENE 12.7 mph 23.0 mph 0.04 in   Unknown
5:54 AM 46.0 °F 38.5 °F 45.0 °F 96% 29.59 in - East 19.6 mph 26.5 mph 0.03 in   Unknown
6:54 AM 46.9 °F - 45.0 °F 93% 29.56 in - East 12.7 mph 21.9 mph 0.06 in   Unknown
7:54 AM 46.9 °F - 45.0 °F 93% 29.54 in - East 12.7 mph - 0.16 in   Unknown
8:54 AM 48.0 °F - 46.9 °F 96% 29.52 in - East 6.9 mph - N/A   Unknown
9:54 AM 48.9 °F - 48.0 °F 97% 29.50 in - East 5.8 mph - 0.03 in   Unknown
10:54 AM 48.9 °F - 48.0 °F 97% 29.47 in - ESE 5.8 mph - 0.01 in   Unknown
11:54 AM 48.9 °F - 46.9 °F 93% 29.45 in - NW 4.6 mph - 0.01 in   Unknown
12:54 PM 50.0 °F - 48.9 °F 96% 29.42 in - West 4.6 mph - N/A   Unknown
1:54 PM 48.0 °F - 46.9 °F 96% 29.44 in - SW 9.2 mph - N/A   Unknown
2:54 PM 46.0 °F 40.6 °F 45.0 °F 96% 29.44 in - West 11.5 mph 17.3 mph N/A   Unknown
3:54 PM 44.1 °F 39.5 °F 43.0 °F 96% 29.44 in - West 8.1 mph - N/A   Unknown
4:54 PM 44.1 °F 38.6 °F 42.1 °F 93% 29.44 in - West 10.4 mph - N/A   Unknown
5:54 PM 44.1 °F 38.1 °F 42.1 °F 93% 29.44 in - West 11.5 mph - N/A   Unknown
6:54 PM 44.1 °F 39.0 °F 42.1 °F 93% 29.46 in - West 9.2 mph - N/A   Unknown
7:54 PM 43.0 °F 36.8 °F 41.0 °F 93% 29.47 in - West 11.5 mph - N/A   Unknown
8:54 PM 42.1 °F 34.9 °F 41.0 °F 96% 29.45 in - West 13.8 mph - N/A   Unknown
9:54 PM 41.0 °F 32.8 °F 39.9 °F 96% 29.45 in - West 16.1 mph 23.0 mph N/A   Unknown
10:54 PM 41.0 °F 33.5 °F 39.0 °F 93% 29.45 in - West 13.8 mph - N/A   Unknown
11:54 PM 41.0 °F 33.5 °F 39.0 °F 93% 29.45 in - WNW 13.8 mph - N/A   Unknown