Weather History for Boston, MA

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Month of January, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 56 °F 34 °F 13 °F
Mean Temperature 46 °F 28 °F 6 °F
Min Temperature 38 °F 22 °F -2 °F
Degree Days  
Heating Degree Days (base 65) 59 37 19 1153
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 46 °F 17 °F -19 °F
Precipitation  
Precipitation 1.40 in 0.16 in 0.00 in 4.01 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 36 mph 11 mph 0 mph
Gust Wind 46 mph 24 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.52 in 29.91 in 29.17 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Jan. 14, 2011 Rise Set
Actual Time 7:11 AM EST 4:35 PM EST
Civil Twilight 6:40 AM EST 5:06 PM EST
Nautical Twilight 6:05 AM EST 5:41 PM EST
Astronomical Twilight 5:31 AM EST 6:14 PM EST
Moon 11:50 AM EST (1/14) 2:08 AM EST (1/14)
Length of Visible Light 10h 26m
Length of Day
9h 24m
Waxing Gibbous, 71% of the Moon is Illuminated
Jan 14
Waxing Gibbous
Jan 19
Full
Jan 26
Last Quarter
Feb 2
New
Feb 11
First Quarter

Weather History Calendar

Precipitation Actual month total 4.01 Normal Month Total: 3.92
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
56 | 35 0.00
Average:
38 | 24 0.12
Rain
Actual:
51 | 38 0.15
Average:
38 | 23 0.12
Scattered Clouds
Actual:
38 | 29 0.00
Average:
38 | 23 0.12
Partly Cloudy
Actual:
39 | 25 0.00
Average:
37 | 23 0.12
Scattered Clouds
Actual:
39 | 28 0.00
Average:
37 | 23 0.12
Scattered Clouds
Actual:
32 | 22 0.00
Average:
37 | 23 0.13
Snow
Actual:
35 | 23 0.02
Average:
37 | 22 0.13
Snow
Actual:
33 | 27 0.16
Average:
37 | 22 0.13
Snow
Actual:
35 | 25 0.13
Average:
37 | 22 0.13
Scattered Clouds
Actual:
35 | 23 0.00
Average:
37 | 22 0.13
Partly Cloudy
Actual:
31 | 21 T
Average:
37 | 22 0.13
Snow
Actual:
35 | 28 1.40
Average:
36 | 22 0.13
Scattered Clouds
Actual:
31 | 21 T
Average:
36 | 22 0.13
Partly Cloudy
Actual:
25 | 18 0.00
Average:
36 | 22 0.13
Snow
Actual:
33 | 15 T
Average:
36 | 22 0.13
Scattered Clouds
Actual:
35 | 21 0.00
Average:
36 | 22 0.13
Partly Cloudy
Actual:
21 | 14 0.00
Average:
36 | 22 0.13
Snow
Actual:
40 | 18 0.95
Average:
36 | 22 0.13
Snow
Actual:
39 | 32 0.19
Average:
36 | 22 0.13
Snow
Actual:
32 | 26 T
Average:
36 | 21 0.13
Snow
Actual:
30 | 22 0.23
Average:
36 | 21 0.13
Partly Cloudy
Actual:
26 | 17 0.00
Average:
36 | 21 0.13
Scattered Clouds
Actual:
24 | 5 0.00
Average:
36 | 21 0.13
Scattered Clouds
Actual:
13 | -2 0.00
Average:
36 | 22 0.13
Snow
Actual:
32 | 12 0.05
Average:
36 | 22 0.13
Snow
Actual:
34 | 15 0.05
Average:
36 | 22 0.12
Snow
Actual:
35 | 24 0.68
Average:
36 | 22 0.12
Snow
Actual:
33 | 18 T
Average:
36 | 22 0.12
Partly Cloudy
Actual:
37 | 26 T
Average:
36 | 22 0.12
Partly Cloudy
Actual:
36 | 26 0.00
Average:
36 | 22 0.12
Partly Cloudy
Actual:
26 | 16 0.00
Average:
37 | 22 0.12
 

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
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 56 46 35 43 37 29 85 73 60 30.10 30.04 29.96 10 9 6 15 6 18 0.00  
2 51 45 38 46 41 26 100 85 70 29.96 29.88 29.79 10 5 0 24 7 31 0.15 Rain
3 38 34 29 22 12 8 64 48 32 30.07 29.98 29.80 10 10 9 26 15 35 0.00  
4 39 32 25 18 16 13 63 52 40 30.05 29.89 29.71 10 10 10 20 10 24 0.00  
5 39 34 28 20 15 8 63 49 35 29.77 29.73 29.69 10 10 10 25 12 31 0.00  
6 32 27 22 13 10 7 62 49 36 29.75 29.69 29.62 10 10 10 14 6 18 0.00  
7 35 29 23 29 23 8 92 71 50 29.61 29.50 29.44 10 8 2 16 9 18 0.02 Snow
8 33 30 27 29 26 23 92 85 78 29.47 29.41 29.34 10 5 0 18 11 24 0.16 Fog , Snow
9 35 30 25 25 19 13 85 68 51 29.88 29.59 29.34 10 8 0 25 17 35 0.13 Fog , Snow
10 35 29 23 16 13 8 60 52 44 30.14 30.02 29.90 10 10 10 23 16 31 0.00  
11 31 26 21 25 18 10 78 68 57 30.26 30.14 29.93 10 10 8 15 7 20 T  
12 35 32 28 32 27 22 96 84 72 29.91 29.43 29.17 10 2 0 36 24 46 1.40 Fog , Snow
13 31 26 21 21 15 10 69 59 49 30.18 29.97 29.63 10 10 9 25 17 35 T  
14 25 22 18 12 10 9 67 61 55 30.26 30.23 30.19 10 10 9 17 9 22 0.00  
15 33 24 15 27 14 7 85 70 55 30.24 30.07 29.83 10 10 8 17 10 23 T Snow
16 35 28 21 25 14 6 75 56 36 30.18 29.97 29.81 10 10 10 23 14 30 0.00  
17 21 18 14 6 2 -1 59 51 43 30.40 30.33 30.17 10 10 10 18 8 24 0.00  
18 40 29 18 40 29 6 100 78 56 30.39 29.96 29.49 10 3 0 21 11 24 0.95 Rain , Snow
19 39 36 32 37 34 28 100 93 85 29.81 29.65 29.49 10 4 2 18 9 23 0.19 Rain , Snow
20 32 29 26 29 22 14 92 71 49 29.99 29.90 29.82 10 8 1 21 9 26 T Snow
21 30 26 22 25 21 11 92 74 55 29.83 29.54 29.35 10 4 0 28 14 37 0.23 Fog , Snow
22 26 22 17 11 7 5 62 52 42 29.94 29.87 29.74 10 10 9 22 11 29 0.00  
23 24 15 5 8 2 -8 73 56 39 30.25 29.96 29.82 10 10 10 25 12 36 0.00  
24 13 6 -2 -10 -14 -19 55 43 30 30.43 30.39 30.27 10 10 10 22 12 31 0.00  
25 32 22 12 25 14 -6 92 63 34 30.38 30.20 30.08 10 5 2 13 5 15 0.05 Snow
26 34 25 15 32 24 14 96 87 77 30.15 29.90 29.57 8 3 1 26 9 33 0.05 Rain , Snow
27 35 30 24 28 20 13 92 66 40 29.83 29.61 29.51 10 4 0 36 15 44 0.68 Fog , Snow
28 33 26 18 24 21 13 85 74 63 29.88 29.85 29.83 10 10 4 12 5 15 T Snow
29 37 32 26 25 23 19 92 72 52 29.97 29.89 29.85 10 9 5 12 6 16 T  
30 36 31 26 19 16 13 68 55 41 30.20 30.05 29.97 10 10 10 21 8 26 0.00  
31 26 21 16 13 2 -7 68 48 27 30.52 30.42 30.23 10 10 10 20 8 26 0.00