Weather History for Boston, MA

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Month of December, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 63 °F 48 °F 28 °F
Mean Temperature 55 °F 40 °F 24 °F
Min Temperature 49 °F 33 °F 18 °F
Degree Days  
Heating Degree Days (base 65) 41 25 10 763
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 6 0 0 13
Dew Point  
Dew Point 57 °F 29 °F -6 °F
Precipitation  
Precipitation 1.60 in 0.14 in 0.00 in 3.97 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 38 mph 10 mph 0 mph
Gust Wind 74 mph 24 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.68 in 30.11 in 29.25 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 09, 2011 Rise Set
Actual Time 7:01 AM EST 4:11 PM EST
Civil Twilight 6:29 AM EST 4:43 PM EST
Nautical Twilight 5:54 AM EST 5:18 PM EST
Astronomical Twilight 5:20 AM EST 5:52 PM EST
Moon 3:32 PM EST (12/9) 6:05 AM EST (12/9)
Length of Visible Light 10h 13m
Length of Day
9h 10m
Waxing Gibbous, 99% of the Moon is Illuminated
Dec 9
Waxing Gibbous
Dec 10
Full
Dec 17
Last Quarter
Dec 24
New
Jan 1
First Quarter

Weather History Calendar

Precipitation Actual month total 3.97 Normal Month Total: 3.78
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Scattered Clouds
Actual:
49 | 38 0.00
Average:
46 | 33 0.13
Partly Cloudy
Actual:
50 | 35 0.00
Average:
46 | 33 0.13
Scattered Clouds
Actual:
45 | 34 0.00
Average:
46 | 33 0.13
Partly Cloudy
Actual:
53 | 35 0.00
Average:
45 | 32 0.14
Partly Cloudy
Actual:
63 | 44 0.00
Average:
45 | 32 0.13
Rain
Actual:
61 | 49 0.09
Average:
44 | 32 0.13
Rain
Actual:
59 | 45 1.60
Average:
44 | 31 0.14
Rain
Actual:
46 | 37 0.89
Average:
44 | 31 0.12
Partly Cloudy
Actual:
52 | 35 T
Average:
43 | 31 0.13
Partly Cloudy
Actual:
47 | 31 0.00
Average:
43 | 30 0.13
Scattered Clouds
Actual:
38 | 28 0.00
Average:
43 | 30 0.13
Scattered Clouds
Actual:
49 | 31 0.00
Average:
42 | 29 0.12
Scattered Clouds
Actual:
47 | 29 0.00
Average:
42 | 29 0.12
Mostly Cloudy
Actual:
43 | 37 0.00
Average:
42 | 29 0.12
Rain
Actual:
54 | 38 0.05
Average:
41 | 28 0.13
Partly Cloudy
Actual:
54 | 41 0.02
Average:
41 | 28 0.12
Partly Cloudy
Actual:
41 | 28 0.00
Average:
41 | 28 0.12
Partly Cloudy
Actual:
28 | 20 T
Average:
40 | 27 0.12
Partly Cloudy
Actual:
45 | 18 0.00
Average:
40 | 27 0.12
Partly Cloudy
Actual:
45 | 32 T
Average:
40 | 27 0.11
Rain
Actual:
58 | 32 0.09
Average:
39 | 26 0.13
Rain
Actual:
57 | 45 0.41
Average:
39 | 26 0.11
Rain
Actual:
47 | 37 0.58
Average:
39 | 26 0.12
Scattered Clouds
Actual:
31 | 22 0.00
Average:
39 | 26 0.12
Snow
Actual:
42 | 19 0.03
Average:
38 | 25 0.13
Partly Cloudy
Actual:
43 | 30 0.00
Average:
38 | 25 0.11
Rain
Actual:
56 | 29 0.18
Average:
38 | 25 0.11
Rain
Actual:
57 | 28 0.02
Average:
38 | 24 0.11
Scattered Clouds
Actual:
33 | 23 0.00
Average:
37 | 24 0.11
Mostly Cloudy
Actual:
44 | 27 0.00
Average:
37 | 24 0.11
Rain
Actual:
40 | 34 0.01
Average:
37 | 24 0.10
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & Observations

2011 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 49 44 38 32 25 18 70 54 37 30.29 30.10 29.85 10 10 10 17 10 23 0.00  
2 50 43 35 28 24 20 56 46 36 30.45 30.32 30.25 10 10 10 20 8 26 0.00  
3 45 40 34 31 28 25 76 65 53 30.68 30.62 30.48 10 10 10 16 8 20 0.00  
4 53 44 35 45 38 30 93 79 64 30.62 30.50 30.39 10 10 10 18 9 26 0.00  
5 63 54 44 50 47 43 93 75 56 30.39 30.31 30.22 10 9 1 17 10 26 0.00  
6 61 55 49 57 55 49 93 89 84 30.19 30.01 29.88 10 8 2 16 9 23 0.09 Rain
7 59 52 45 56 48 43 100 96 92 29.89 29.78 29.45 10 4 1 17 7 20 1.60 Rain
8 46 42 37 43 32 24 96 71 45 30.28 29.70 29.29 10 7 2 36 16 48 0.89 Rain
9 52 44 35 41 33 24 89 67 44 30.36 30.27 30.19 10 10 10 24 10 32 T  
10 47 39 31 41 26 11 89 61 32 30.44 30.25 30.16 10 10 10 18 10 24 0.00  
11 38 33 28 18 16 14 58 48 37 30.62 30.57 30.45 10 10 10 13 7 18 0.00  
12 49 40 31 23 18 10 63 42 21 30.58 30.50 30.40 10 10 10 17 9 21 0.00  
13 47 38 29 32 24 17 70 55 40 30.39 30.32 30.28 10 10 10 16 7 17 0.00  
14 43 40 37 32 30 28 76 68 60 30.42 30.38 30.33 10 10 10 12 7 14 0.00  
15 54 46 38 48 39 29 83 74 64 30.32 30.00 29.69 10 10 9 28 17 74 0.05 Rain
16 54 48 41 48 33 26 83 61 39 30.07 29.88 29.62 10 10 10 32 16 45 0.02  
17 41 35 28 28 21 7 70 55 39 30.15 30.07 30.03 10 10 10 18 11 25 0.00  
18 28 24 20 11 5 -1 55 44 33 30.31 30.23 30.14 10 10 10 16 10 21 T  
19 45 32 18 29 17 0 62 50 37 30.27 30.05 29.84 10 10 10 26 14 36 0.00  
20 45 39 32 33 20 9 67 47 27 30.23 30.10 29.86 10 10 10 18 10 24 T  
21 58 45 32 54 43 22 93 76 59 30.21 29.90 29.59 10 9 5 21 10 26 0.09 Rain
22 57 51 45 54 41 34 83 65 47 30.09 29.89 29.61 10 9 2 25 11 35 0.41 Rain
23 47 42 37 42 35 21 96 84 71 30.19 29.97 29.89 10 8 3 15 9 17 0.58 Rain
24 31 27 22 20 12 4 69 56 42 30.50 30.39 30.20 10 10 10 15 8 20 0.00  
25 42 31 19 35 22 6 79 63 47 30.49 30.21 29.86 10 10 7 16 8 21 0.03 Rain , Snow
26 43 37 30 34 25 17 85 63 41 30.26 30.05 29.83 10 10 10 26 11 36 0.00  
27 56 43 29 52 35 20 93 76 58 30.19 29.88 29.34 10 9 4 38 14 49 0.18 Rain
28 57 43 28 53 32 13 93 69 45 29.63 29.37 29.25 10 10 6 33 20 43 0.02 Rain
29 33 28 23 12 4 -6 50 36 21 30.04 29.88 29.63 10 10 10 29 15 39 0.00  
30 44 36 27 37 24 10 82 63 43 30.12 30.08 30.04 10 10 10 14 4 16 0.00  
31 40 37 34 36 34 29 92 84 75 30.06 29.90 29.82 10 4 0 14 7 18 0.01 Rain