History for Boston, MA

Month of December, 2012 — View Current Conditions
Month of December, 2012
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Daily Weekly Monthly Custom
  Max Avg Min Sum
Temperature
Max Temperature 60 °F 44 °F 30 °F
Mean Temperature 51 °F 39 °F 26 °F
Min Temperature 43 °F 33 °F 21 °F
Degree Days
Heating Degree Days (base 65) 39 26 14 817
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point
Dew Point 57 °F 30 °F 7 °F
Precipitation
Precipitation 1.67 in 0.24 in 0.00 in 5.89 in
Snowdepth 9.0 in 0.8 in 0.0 in -
Wind
Wind 45 mph 11 mph 0 mph
Gust Wind 54 mph 25 mph 17 mph
Sea Level Pressure
Sea Level Pressure 30.64 in 29.99 in 29.10 in
Monthly Graph
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Date:
Astronomy
May. 18, 2013 Rise Set
Actual Time 7:01 AM EST 4:11 PM EST
Civil Twilight 6:30 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 2:27 AM EST (12/9) 1:19 PM EST (12/9)
Length Of Visible Light 10h 13m
Length of Day
9h 09m
Waning Crescent, 19% of the Moon is Illuminated
Dec 9
Waning Crescent
Dec 13
New
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter
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Monthly Calendar Overview
Print This Calendar Precipitation: Actual month total 5.89 Normal month total 3.78
« Previous Month « 2011 December 2012 2013 » Next Month »
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
1 Snow
Actual: 32 | 28
Precip: 0.03
Average: 46 | 33
Precip: 0.13
2 Rain
Actual: 52 | 32
Precip: T
Average: 46 | 33
Precip: 0.13
3 Partly Cloudy
Actual: 59 | 41
Precip: 0.00
Average: 46 | 33
Precip: 0.13
4 Rain
Actual: 57 | 39
Precip: 0.01
Average: 45 | 32
Precip: 0.14
5 Rain
Actual: 57 | 33
Precip: T
Average: 45 | 32
Precip: 0.13
6 Scattered Clouds
Actual: 41 | 30
Precip: 0.00
Average: 44 | 32
Precip: 0.13
7 Rain
Actual: 44 | 30
Precip: 0.03
Average: 44 | 31
Precip: 0.14
8 Rain
Actual: 47 | 43
Precip: 0.34
Average: 44 | 31
Precip: 0.12
9 Rain
Actual: 49 | 41
Precip: 0.08
Average: 43 | 31
Precip: 0.13
10 Rain
Actual: 60 | 42
Precip: 0.56
Average: 43 | 30
Precip: 0.13
11 Rain
Actual: 56 | 34
Precip: T
Average: 43 | 30
Precip: 0.13
12 Partly Cloudy
Actual: 40 | 31
Precip: 0.00
Average: 42 | 29
Precip: 0.12
13 Scattered Clouds
Actual: 42 | 29
Precip: 0.00
Average: 42 | 29
Precip: 0.12
14 Scattered Clouds
Actual: 49 | 31
Precip: 0.00
Average: 42 | 29
Precip: 0.12
15 Partly Cloudy
Actual: 40 | 33
Precip: 0.00
Average: 41 | 28
Precip: 0.13
16 Snow
Actual: 39 | 34
Precip: 0.25
Average: 41 | 28
Precip: 0.12
17 Rain
Actual: 45 | 37
Precip: 0.48
Average: 41 | 28
Precip: 0.12
18 Rain
Actual: 50 | 41
Precip: 0.86
Average: 40 | 27
Precip: 0.12
19 Rain
Actual: 45 | 38
Precip: T
Average: 40 | 27
Precip: 0.12
20 Rain
Actual: 43 | 33
Precip: T
Average: 40 | 27
Precip: 0.11
21 Rain
Actual: 52 | 38
Precip: 0.65
Average: 39 | 26
Precip: 0.13
22 Partly Cloudy
Actual: 38 | 30
Precip: 0.00
Average: 39 | 26
Precip: 0.11
23 Partly Cloudy
Actual: 38 | 29
Precip: 0.00
Average: 39 | 26
Precip: 0.12
24 Partly Cloudy
Actual: 40 | 31
Precip: 0.00
Average: 39 | 26
Precip: 0.12
25 Snow
Actual: 35 | 28
Precip: 0.01
Average: 38 | 25
Precip: 0.13
26 Snow
Actual: 39 | 23
Precip: 0.23
Average: 38 | 25
Precip: 0.11
27 Snow
Actual: 47 | 30
Precip: 1.67
Average: 38 | 25
Precip: 0.11
28 Partly Cloudy
Actual: 37 | 28
Precip: 0.00
Average: 38 | 24
Precip: 0.11
29 Snow
Actual: 37 | 29
Precip: 0.69
Average: 37 | 24
Precip: 0.11
30 Snow
Actual: 30 | 22
Precip: T
Average: 37 | 24
Precip: 0.11
31 Partly Cloudy
Actual: 34 | 21
Precip: 0.00
Average: 37 | 24
Precip: 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 Observations
2012 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 32 30 28 29 23 13 92 69 45 30.64 30.58 30.51 10 6 1 13 7 21 0.03 Snow
2 52 42 32 46 36 28 96 84 71 30.49 30.29 30.04 10 6 2 21 6 28 T Rain
3 59 50 41 46 41 36 86 69 51 30.30 30.14 30.02 10 9 6 23 10 30 0.00  
4 57 48 39 54 44 35 96 86 76 30.33 30.23 29.98 10 7 0 22 7 33 0.01 Fog , Rain
5 57 45 33 54 38 14 93 68 43 30.15 29.94 29.83 10 10 10 26 16 35 T Rain
6 41 36 30 18 16 14 54 46 37 30.32 30.27 30.16 10 10 10 22 9 30 0.00  
7 44 37 30 40 31 19 89 74 58 30.31 30.17 30.04 10 10 7 10 5 14 0.03 Rain
8 47 45 43 44 42 41 100 93 86 30.04 29.96 29.87 9 4 0 13 5 17 0.34 Rain
9 49 45 41 44 35 28 93 73 53 30.30 30.19 29.97 10 10 6 16 9 20 0.08 Rain
10 60 51 42 57 49 39 100 95 89 30.15 29.78 29.50 10 6 2 21 8 25 0.56 Rain
11 56 45 34 54 35 21 93 71 49 30.15 29.83 29.53 10 10 9 21 11 26 T Rain
12 40 36 31 23 20 18 63 54 44 30.43 30.33 30.17 10 10 10 13 9 18 0.00  
13 42 36 29 27 25 21 70 61 51 30.48 30.40 30.30 10 10 10 6 4 7 0.00  
14 49 40 31 26 23 18 69 49 29 30.27 30.17 30.04 10 10 10 20 11 24 0.00  
15 40 37 33 27 24 21 70 59 48 30.34 30.28 30.18 10 10 10 21 9 26 0.00  
16 39 37 34 36 30 22 92 77 61 30.33 30.20 30.09 10 6 2 21 14 26 0.25 Rain , Snow
17 45 41 37 45 41 37 100 96 92 30.08 29.97 29.80 5 2 0 22 14 26 0.48 Rain
18 50 46 41 49 45 37 100 95 89 29.78 29.50 29.39 10 4 0 18 11 25 0.86 Fog , Rain
19 45 42 38 38 32 28 89 71 53 30.03 29.66 29.44 10 10 9 25 16 37 T Rain
20 43 38 33 35 30 28 76 67 57 30.21 30.13 30.04 10 10 10 14 9 17 T Rain
21 52 45 38 52 41 32 100 88 76 30.02 29.46 29.10 10 7 2 39 21 49 0.65 Rain
22 38 34 30 31 22 13 82 63 43 29.64 29.40 29.24 10 10 10 28 16 37 0.00  
23 38 34 29 22 18 13 56 48 40 29.87 29.80 29.66 10 10 10 23 13 30 0.00  
24 40 36 31 22 18 15 61 49 37 30.06 30.01 29.88 10 10 10 18 8 25 0.00  
25 35 32 28 27 24 16 78 65 51 30.23 30.07 29.99 10 9 2 14 8 20 0.01 Snow
26 39 31 23 34 22 12 85 69 53 30.32 30.21 29.93 10 9 4 36 14 44 0.23 Rain , Snow
27 47 39 30 45 37 27 96 91 85 29.88 29.46 29.22 10 4 1 45 24 54 1.67 Rain , Snow
28 37 33 28 25 21 17 78 65 52 30.01 29.88 29.64 10 10 10 24 14 35 0.00  
29 37 33 29 34 27 22 92 78 63 30.01 29.71 29.39 10 6 0 30 10 37 0.69 Fog , Rain , Snow
30 30 26 22 27 17 7 92 69 46 29.97 29.66 29.42 10 8 1 30 19 40 T Snow
31 34 28 21 22 17 7 69 61 52 30.04 29.93 29.77 10 10 10 24 14 30 0.00  
Comma Delimited File