Weather History for Boston, MA

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Month of May, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 86 °F 67 °F 50 °F
Mean Temperature 76 °F 61 °F 48 °F
Min Temperature 66 °F 54 °F 45 °F
Degree Days  
Heating Degree Days (base 65) 17 5 0 170
Cooling Degree Days (base 65) 11 1 0 34
Growing Degree Days (base 50) 26 10 0 311
Dew Point  
Dew Point 68 °F 51 °F 26 °F
Precipitation  
Precipitation 0.85 in 0.12 in 0.00 in 3.43 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 25 mph 8 mph 0 mph
Gust Wind 33 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.31 in 30.02 in 29.40 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

May. 28, 2012 Rise Set
Actual Time 5:11 AM EDT 8:11 PM EDT
Civil Twilight 4:38 AM EDT 8:45 PM EDT
Nautical Twilight 3:55 AM EDT 9:28 PM EDT
Astronomical Twilight 3:05 AM EDT 10:18 PM EDT
Moon 12:24 PM EDT (5/28) 12:41 AM EDT (5/28)
Length of Visible Light 16h 07m
Length of Day
14h 59m
Waxing Crescent, 48% of the Moon is Illuminated
May 28
Waxing Crescent
May 28
First Quarter
Jun 4
Full
Jun 11
Last Quarter
Jun 19
New

Weather History Calendar

Precipitation Actual month total 3.43 Normal Month Total: 3.49
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Rain
Actual:
50 | 45 0.60
Average:
61 | 46 0.10
Overcast
Actual:
52 | 45 T
Average:
62 | 46 0.11
Rain
Actual:
50 | 46 0.04
Average:
62 | 46 0.11
Rain
Actual:
56 | 49 0.01
Average:
62 | 46 0.10
Rain
Actual:
58 | 50 0.09
Average:
63 | 47 0.12
Fog
Actual:
54 | 46 0.00
Average:
63 | 47 0.11
Partly Cloudy
Actual:
59 | 48 0.00
Average:
63 | 47 0.10
Rain
Actual:
58 | 50 0.16
Average:
64 | 48 0.10
Rain
Actual:
63 | 56 0.26
Average:
64 | 48 0.10
Rain
Actual:
67 | 50 0.85
Average:
64 | 48 0.10
Partly Cloudy
Actual:
64 | 47 0.00
Average:
64 | 48 0.11
Scattered Clouds
Actual:
80 | 50 0.00
Average:
65 | 49 0.10
Partly Cloudy
Actual:
80 | 59 0.00
Average:
65 | 49 0.10
Rain
Actual:
64 | 53 0.09
Average:
65 | 49 0.10
Rain
Actual:
73 | 56 0.50
Average:
66 | 50 0.10
Rain
Actual:
73 | 60 0.06
Average:
66 | 50 0.11
Scattered Clouds
Actual:
70 | 54 0.00
Average:
66 | 50 0.10
Partly Cloudy
Actual:
65 | 49 0.00
Average:
67 | 50 0.11
Scattered Clouds
Actual:
66 | 51 0.00
Average:
67 | 51 0.11
Partly Cloudy
Actual:
71 | 55 0.00
Average:
67 | 51 0.12
Rain
Actual:
59 | 54 0.02
Average:
68 | 51 0.11
Rain
Actual:
63 | 56 0.58
Average:
68 | 52 0.12
Rain
Actual:
71 | 59 T
Average:
68 | 52 0.13
Partly Cloudy
Actual:
71 | 60 0.00
Average:
69 | 52 0.13
Mostly Cloudy
Actual:
74 | 58 0.00
Average:
69 | 53 0.13
Partly Cloudy
Actual:
86 | 66 0.00
Average:
69 | 53 0.13
Partly Cloudy
Actual:
72 | 64 0.00
Average:
70 | 53 0.13
Partly Cloudy
Actual:
69 | 60 0.00
Average:
70 | 54 0.12
Thunderstorm
Actual:
67 | 59 0.17
Average:
70 | 54 0.13
Rain
Actual:
75 | 61 T
Average:
71 | 54 0.13
Partly Cloudy
Actual:
83 | 63 0.00
Average:
71 | 55 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

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
May high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 50 48 45 46 43 35 100 78 56 30.22 30.12 30.06 10 4 1 25 13 30 0.60 Rain
2 52 49 45 46 44 43 100 89 77 30.24 30.21 30.14 10 8 2 15 9 25 T  
3 50 48 46 47 46 44 93 90 86 30.22 30.18 30.12 10 8 2 12 7 16 0.04 Rain
4 56 53 49 53 49 46 100 93 86 30.09 30.00 29.93 10 6 0 14 7 20 0.01 Fog , Rain
5 58 54 50 52 49 46 100 89 77 30.09 29.99 29.94 10 3 0 12 5 17 0.09 Fog , Rain
6 54 50 46 49 42 35 100 75 50 30.16 30.11 30.08 10 8 0 12 7 14 0.00 Fog
7 59 54 48 47 43 37 80 66 51 30.15 30.12 30.10 10 10 10 17 9 21 0.00  
8 58 54 50 53 45 36 93 72 50 30.11 30.01 29.89 10 9 5 25 11 32 0.16 Rain
9 63 60 56 59 57 54 97 91 84 29.89 29.74 29.60 10 9 5 14 8 17 0.26 Rain
10 67 59 50 57 51 38 100 74 47 29.68 29.49 29.40 10 5 1 23 12 32 0.85 Rain
11 64 56 47 41 36 29 71 50 28 30.04 29.86 29.69 10 10 10 23 10 33 0.00  
12 80 65 50 43 35 26 59 39 19 30.14 30.08 30.03 10 10 10 23 10 30 0.00  
13 80 70 59 55 48 43 63 51 38 30.15 30.10 30.05 10 10 10 17 7 31 0.00  
14 64 59 53 54 51 48 93 80 67 30.20 30.16 30.10 10 9 3 13 6 16 0.09 Rain
15 73 65 56 61 56 53 100 77 53 30.17 30.08 29.97 10 7 2 20 10 25 0.50 Rain
16 73 67 60 64 61 59 100 87 73 29.96 29.89 29.81 10 7 1 15 7 26 0.06 Rain
17 70 62 54 59 43 35 97 63 28 30.15 30.02 29.87 10 10 10 21 9 26 0.00  
18 65 57 49 48 44 37 83 64 44 30.27 30.21 30.16 10 10 9 18 8 22 0.00  
19 66 59 51 48 43 39 72 57 42 30.19 30.17 30.14 10 10 10 13 5 15 0.00  
20 71 63 55 51 47 41 77 57 37 30.31 30.25 30.17 10 10 10 17 7 22 0.00  
21 59 57 54 56 53 47 93 83 72 30.29 30.23 30.09 10 4 0 14 7 16 0.02 Fog , Rain
22 63 60 56 61 59 55 100 97 93 30.07 29.92 29.83 2 1 0 17 8 21 0.58 Fog , Rain
23 71 65 59 63 60 57 100 87 73 30.06 29.92 29.84 10 6 0 14 6 16 T Rain
24 71 66 60 62 59 58 100 87 73 30.26 30.19 30.07 10 10 10 21 10 24 0.00  
25 74 66 58 65 60 55 100 87 73 30.28 30.21 30.12 10 8 0 17 8 21 0.00  
26 86 76 66 68 64 52 93 68 43 30.12 30.07 30.02 10 10 7 16 10 24 0.00  
27 72 68 64 59 54 49 84 66 47 30.17 30.11 30.01 10 10 10 15 10 21 0.00  
28 69 65 60 63 58 55 93 80 66 30.03 29.99 29.95 10 9 5 15 9 20 0.00  
29 67 63 59 63 60 56 100 91 81 29.95 29.82 29.71 10 3 0 18 8 24 0.17 Fog , Rain , Thunderstorm
30 75 68 61 64 61 56 100 77 53 29.75 29.72 29.69 10 10 7 13 6 18 T Rain
31 83 73 63 62 55 47 84 57 30 29.91 29.77 29.71 10 10 10 16 8 20 0.00