Boston, MA

2:48 AM EDT on June 21, 2018 (GMT -0400)
Logan International

Weather History for KBOS - December, 2015

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Month of December, 2015

  Max Avg Min Sum
Temperature  
Max Temperature 69 °F 52 °F 37 °F
Mean Temperature 59 °F 46 °F 31 °F
Min Temperature 49 °F 39 °F 24 °F
Degree Days  
Heating Degree Days (base 65) 34 19 6 603
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 8 1 0 26
Dew Point  
Dew Point 63 °F 37 °F 7 °F
Precipitation  
Precipitation 1.02 in 0.16 in 0.00 in 4.28 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 31 mph 9 mph 0 mph
Gust Wind 41 mph 24 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.65 in 30.08 in 29.25 in

Monthly Weather History Graph

Monthly Weather History Graph

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Astronomy

Dec. 13, 2015 Rise Set
Actual Time 7:04 AM EST 4:11 PM EST
Civil Twilight 6:32 AM EST 4:43 PM EST
Nautical Twilight 5:57 AM EST 5:18 PM EST
Astronomical Twilight 5:23 AM EST 5:53 PM EST
Moon 8:35 AM EST (12/13) 6:43 PM EST (12/13)
Length of Visible Light 10h 10m
Length of Day
9h 07m
Waxing Crescent, 6% of the Moon is Illuminated
Dec 13
Waxing Crescent
Dec 18
First Quarter
Dec 25
Full
Jan 2
Last Quarter
Jan 9
New

Daily Weather History & Observations

2015 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 45 39 32 43 35 25 96 83 69 30.40 30.24 30.01 10 8 1 15 6 17 0.14 Rain
2 51 45 39 51 43 37 100 95 89 29.99 29.81 29.59 10 3 0 13 4 15 0.32 Fog , Rain
3 52 47 41 50 39 27 100 75 49 30.07 29.70 29.56 10 8 0 30 14 40 T Rain
4 48 43 38 31 29 28 70 58 46 30.52 30.34 30.10 10 10 10 20 11 30 0.00  
5 53 46 39 38 33 31 79 65 50 30.64 30.59 30.52 10 10 10 13 7 17 0.00  
6 59 48 36 35 32 28 89 61 33 30.57 30.38 30.20 10 10 7 14 8 18 0.00  
7 56 47 37 39 33 26 85 60 35 30.18 30.09 30.01 10 9 6 22 7 28 0.00  
8 44 41 37 36 33 28 79 72 64 30.16 30.12 30.08 10 10 9 22 11 28 T Rain
9 46 42 37 39 33 27 82 71 60 30.20 30.15 30.07 10 10 10 18 8 28 T  
10 58 51 43 49 45 39 100 84 67 30.06 29.99 29.94 10 10 4 20 5 22 T  
11 58 51 43 52 46 43 100 86 72 29.97 29.93 29.84 10 4 0 18 8 24 0.00 Fog
12 61 55 49 44 39 36 77 60 42 30.13 30.07 29.93 10 10 10 16 7 22 0.00  
13 53 50 46 43 40 37 86 73 59 30.23 30.19 30.13 10 10 10 16 7 18 0.00  
14 58 52 46 57 46 39 100 88 76 30.16 29.85 29.45 10 4 0 12 4 14 0.42 Fog , Rain
15 61 55 48 61 49 36 100 74 47 29.79 29.41 29.25 10 9 2 31 14 41 0.19 Rain
16 48 43 38 39 32 29 83 70 57 30.22 30.10 29.85 10 10 10 16 9 20 0.00  
17 52 46 39 52 44 33 100 87 73 30.17 29.92 29.59 10 7 1 17 8 23 0.55 Rain
18 52 46 39 50 42 24 100 80 59 29.69 29.63 29.59 10 8 0 18 10 23 0.04 Rain
19 40 37 33 24 16 10 64 48 32 30.10 29.90 29.70 10 10 10 29 16 38 0.00  
20 41 36 31 23 18 14 61 50 38 30.47 30.36 30.13 10 10 10 20 10 25 0.00  
21 53 43 32 42 33 24 70 60 50 30.39 30.18 30.02 10 10 10 31 16 41 0.00  
22 60 54 48 57 50 42 100 86 71 30.08 29.97 29.85 10 7 2 20 9 28 0.23 Rain
23 56 51 45 49 47 44 100 89 77 30.27 30.17 29.98 10 6 1 20 7 26 0.76 Rain
24 69 59 48 63 54 48 100 87 73 30.11 29.92 29.84 10 5 0 25 8 32 0.24 Fog , Rain
25 62 56 49 56 48 34 100 76 51 30.26 30.15 30.09 10 10 10 15 6 21 0.00  
26 55 48 41 38 33 30 76 60 43 30.56 30.46 30.29 10 10 10 16 7 22 0.00  
27 50 44 38 46 43 29 100 87 73 30.31 29.94 29.74 10 7 2 24 6 32 0.26 Rain
28 38 34 29 28 16 7 75 56 36 30.65 30.44 30.06 10 10 10 25 14 33 T Snow
29 40 32 24 38 30 19 100 93 85 30.59 30.24 29.99 10 3 0 29 18 35 1.02 Rain , Snow
30 37 31 25 36 26 21 100 92 84 30.41 30.30 30.10 10 6 0 13 6 15 0.03 Rain
31 47 40 33 38 33 26 100 78 55 30.11 30.00 29.94 10 6 0 17 9 23 0.08 Rain