Weather History for Boston, MA

Change the Weather History Date:

Month of September, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 82 °F 72 °F 57 °F
Mean Temperature 76 °F 65 °F 56 °F
Min Temperature 70 °F 58 °F 49 °F
Degree Days  
Heating Degree Days (base 65) 9 2 0 72
Cooling Degree Days (base 65) 11 2 0 73
Growing Degree Days (base 50) 26 15 6 440
Dew Point  
Dew Point 74 °F 55 °F 35 °F
Precipitation  
Precipitation 0.79 in 0.13 in 0.00 in 3.39 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 38 mph 9 mph 0 mph
Gust Wind 49 mph 24 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.36 in 30.03 in 29.64 in

Monthly Weather History Graph

Monthly Weather History Graph

Search for Another Location

Airport:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Sep. 11, 2012 Rise Set
Actual Time 6:20 AM EDT 6:59 PM EDT
Civil Twilight 5:51 AM EDT 7:28 PM EDT
Nautical Twilight 5:18 AM EDT 8:01 PM EDT
Astronomical Twilight 4:43 AM EDT 8:36 PM EDT
Moon 1:29 AM EDT (9/11) 4:12 PM EDT (9/11)
Length of Visible Light 13h 36m
Length of Day
12h 39m
Waning Crescent, 21% of the Moon is Illuminated
Sep 11
Waning Crescent
Sep 15
New
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter

Weather History Calendar

Precipitation Actual month total 3.39 Normal Month Total: 3.44
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Scattered Clouds
Actual:
80 | 63 0.00
Average:
77 | 62 0.10
Partly Cloudy
Actual:
73 | 62 T
Average:
77 | 62 0.10
Fog
Actual:
72 | 59 0.00
Average:
76 | 62 0.10
Rain
Actual:
73 | 63 0.44
Average:
76 | 61 0.10
Rain
Actual:
82 | 66 0.66
Average:
76 | 61 0.11
Partly Cloudy
Actual:
79 | 65 0.00
Average:
76 | 61 0.10
Thunderstorm
Actual:
82 | 68 0.43
Average:
75 | 60 0.11
Thunderstorm
Actual:
82 | 70 T
Average:
75 | 60 0.10
Rain
Actual:
75 | 62 T
Average:
75 | 60 0.11
Partly Cloudy
Actual:
69 | 56 0.00
Average:
74 | 60 0.11
Scattered Clouds
Actual:
73 | 53 0.00
Average:
74 | 59 0.10
Clear
Actual:
73 | 53 0.00
Average:
74 | 59 0.12
Clear
Actual:
82 | 60 0.00
Average:
74 | 59 0.11
Scattered Clouds
Actual:
81 | 61 0.00
Average:
73 | 58 0.12
Rain
Actual:
74 | 59 0.12
Average:
73 | 58 0.11
Scattered Clouds
Actual:
71 | 54 0.00
Average:
72 | 57 0.12
Scattered Clouds
Actual:
70 | 53 0.00
Average:
72 | 57 0.11
Rain
Actual:
75 | 58 0.09
Average:
72 | 57 0.12
Rain
Actual:
72 | 55 0.61
Average:
71 | 56 0.12
Scattered Clouds
Actual:
62 | 51 0.00
Average:
71 | 56 0.12
Partly Cloudy
Actual:
63 | 51 0.00
Average:
71 | 56 0.13
Partly Cloudy
Actual:
67 | 56 0.00
Average:
70 | 55 0.12
Rain
Actual:
71 | 56 0.02
Average:
70 | 55 0.12
Scattered Clouds
Actual:
67 | 51 0.00
Average:
70 | 54 0.13
Scattered Clouds
Actual:
73 | 49 0.00
Average:
69 | 54 0.12
Mostly Cloudy
Actual:
74 | 59 T
Average:
69 | 54 0.13
Partly Cloudy
Actual:
69 | 55 0.00
Average:
68 | 53 0.12
Rain
Actual:
58 | 54 0.79
Average:
68 | 53 0.13
Rain
Actual:
57 | 54 0.02
Average:
68 | 52 0.12
Rain
Actual:
59 | 53 0.21
Average:
67 | 52 0.13
 

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
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 80 72 63 63 59 56 78 62 45 30.12 30.02 29.85 10 10 10 18 8 23 0.00  
2 73 68 62 61 59 56 87 74 61 30.15 30.11 30.06 10 10 10 18 6 21 T  
3 72 66 59 62 59 55 100 81 61 30.24 30.19 30.16 10 8 0 18 9 22 0.00 Fog
4 73 68 63 70 65 56 100 87 73 30.16 30.02 29.88 10 7 2 15 6 17 0.44 Rain
5 82 74 66 74 69 62 93 74 55 29.87 29.78 29.71 10 8 1 22 10 29 0.66 Rain
6 79 72 65 66 63 60 93 76 58 29.91 29.87 29.84 10 10 10 14 6 25 0.00  
7 82 75 68 71 67 64 93 80 67 29.94 29.89 29.86 10 8 1 16 8 20 0.43 Rain , Thunderstorm
8 82 76 70 72 68 58 97 80 62 29.89 29.75 29.64 10 8 1 24 14 30 T Rain , Thunderstorm
9 75 69 62 58 55 51 84 65 46 29.85 29.80 29.72 10 10 10 16 7 22 T Rain
10 69 63 56 58 47 41 90 66 42 30.04 29.93 29.85 10 10 10 23 13 30 0.00  
11 73 63 53 51 43 38 69 49 29 30.26 30.18 30.06 10 10 10 15 8 22 0.00  
12 73 63 53 59 51 47 84 64 44 30.36 30.32 30.27 10 10 10 16 7 20 0.00  
13 82 71 60 62 58 56 97 69 40 30.35 30.31 30.26 10 10 10 15 9 18 0.00  
14 81 71 61 63 60 58 90 71 51 30.27 30.18 30.09 10 10 10 18 10 22 0.00  
15 74 67 59 61 53 43 87 61 35 30.07 30.02 29.97 10 10 2 20 11 31 0.12 Rain
16 71 63 54 47 42 36 72 50 28 30.09 30.04 29.98 10 10 10 16 8 22 0.00  
17 70 62 53 57 50 44 84 66 48 30.10 30.06 30.03 10 10 10 14 7 16 0.00  
18 75 67 58 67 61 55 93 81 68 30.06 29.90 29.71 10 10 7 38 18 49 0.09 Rain
19 72 64 55 68 53 38 93 62 31 30.20 29.91 29.69 10 8 1 31 11 41 0.61 Rain
20 62 57 51 47 46 44 77 66 55 30.27 30.22 30.17 10 10 10 16 9 20 0.00  
21 63 57 51 56 51 46 93 83 72 30.18 30.12 30.04 10 10 5 10 7 15 0.00  
22 67 62 56 61 56 54 93 83 73 30.03 29.93 29.83 10 7 1 20 8 24 0.00  
23 71 64 56 64 50 39 93 63 33 30.09 29.94 29.80 10 10 4 18 11 29 0.02 Rain
24 67 59 51 42 39 35 68 51 34 30.13 30.09 30.06 10 10 10 16 9 23 0.00  
25 73 61 49 52 44 39 72 55 38 30.17 30.14 30.10 10 10 10 25 14 36 0.00  
26 74 67 59 62 59 53 87 76 64 30.14 30.06 30.00 10 10 10 21 12 26 T  
27 69 62 55 62 52 42 93 66 39 30.25 30.14 30.00 10 10 10 17 9 22 0.00  
28 58 56 54 56 53 50 93 85 77 30.25 30.14 29.98 10 8 3 23 10 28 0.79 Rain
29 57 56 54 56 53 51 93 87 80 29.96 29.92 29.88 10 8 2 21 8 24 0.02 Rain
30 59 56 53 54 53 51 93 90 86 29.91 29.80 29.72 10 10 4 14 7 18 0.21 Rain