Weather History for Boston, MA

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Month of September, 2010

  Max Avg Min Sum
Temperature  
Max Temperature 95 °F 77 °F 61 °F
Mean Temperature 86 °F 69 °F 60 °F
Min Temperature 77 °F 61 °F 51 °F
Degree Days  
Heating Degree Days (base 65) 5 1 0 28
Cooling Degree Days (base 65) 21 5 0 147
Growing Degree Days (base 50) 34 18 9 553
Dew Point  
Dew Point 74 °F 56 °F 34 °F
Precipitation  
Precipitation 0.68 in 0.07 in 0.00 in 1.80 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 36 mph 11 mph 0 mph
Gust Wind 48 mph 24 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.25 in 29.94 in 29.34 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 15, 2010 Rise Set
Actual Time 6:23 AM EDT 6:53 PM EDT
Civil Twilight 5:55 AM EDT 7:21 PM EDT
Nautical Twilight 5:22 AM EDT 7:55 PM EDT
Astronomical Twilight 4:48 AM EDT 8:29 PM EDT
Moon 2:39 PM EDT (9/15) 11:44 PM EDT (9/15)
Length of Visible Light 13h 26m
Length of Day
12h 29m
First Quarter, 54% of the Moon is Illuminated
Sep 15
First Quarter
Sep 23
Full
Sep 30
Last Quarter
Oct 7
New
Oct 14
First Quarter

Weather History Calendar

Precipitation Actual month total 1.80 Normal Month Total: 3.47
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
94 | 77 0.00
Average:
77 | 61 0.11
Clear
Actual:
95 | 73 0.00
Average:
77 | 61 0.11
Rain
Actual:
82 | 70 0.34
Average:
76 | 61 0.11
Rain
Actual:
83 | 66 0.02
Average:
76 | 61 0.11
Scattered Clouds
Actual:
75 | 59 0.00
Average:
76 | 60 0.11
Scattered Clouds
Actual:
77 | 58 T
Average:
76 | 60 0.11
Rain
Actual:
86 | 65 T
Average:
75 | 60 0.11
Thunderstorm
Actual:
84 | 64 0.28
Average:
75 | 59 0.11
Partly Cloudy
Actual:
74 | 61 T
Average:
75 | 59 0.11
Partly Cloudy
Actual:
70 | 61 0.00
Average:
74 | 59 0.11
Scattered Clouds
Actual:
69 | 58 0.00
Average:
74 | 58 0.11
Mostly Cloudy
Actual:
65 | 56 0.00
Average:
74 | 58 0.11
Rain
Actual:
67 | 58 0.10
Average:
73 | 58 0.11
Partly Cloudy
Actual:
75 | 56 0.05
Average:
73 | 57 0.12
Scattered Clouds
Actual:
70 | 56 0.00
Average:
73 | 57 0.12
Rain
Actual:
71 | 53 0.14
Average:
72 | 57 0.12
Rain
Actual:
71 | 56 0.15
Average:
72 | 56 0.12
Partly Cloudy
Actual:
65 | 55 0.00
Average:
72 | 56 0.12
Partly Cloudy
Actual:
73 | 56 0.00
Average:
72 | 56 0.12
Partly Cloudy
Actual:
72 | 56 0.00
Average:
71 | 55 0.12
Scattered Clouds
Actual:
72 | 51 0.00
Average:
71 | 55 0.12
Partly Cloudy
Actual:
87 | 62 T
Average:
70 | 55 0.12
Partly Cloudy
Actual:
76 | 61 0.00
Average:
70 | 54 0.12
Partly Cloudy
Actual:
84 | 60 0.00
Average:
70 | 54 0.12
Partly Cloudy
Actual:
88 | 67 0.00
Average:
69 | 54 0.12
Mostly Cloudy
Actual:
69 | 58 0.00
Average:
69 | 53 0.12
Rain
Actual:
61 | 58 0.04
Average:
69 | 53 0.12
Rain
Actual:
78 | 60 0.68
Average:
68 | 53 0.12
Partly Cloudy
Actual:
83 | 67 0.00
Average:
68 | 52 0.12
Rain
Actual:
81 | 64 T
Average:
68 | 52 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

2010 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 94 86 77 68 65 59 69 52 34 30.03 29.98 29.94 10 10 9 16 9 29 0.00  
2 95 84 73 67 64 62 73 54 34 29.97 29.93 29.89 10 10 7 21 12 28 0.00  
3 82 76 70 74 69 62 100 77 54 29.91 29.71 29.41 10 5 0 18 9 23 0.34 Fog , Rain
4 83 75 66 72 60 45 93 60 26 29.73 29.47 29.34 10 9 0 28 16 35 0.02 Rain
5 75 67 59 48 46 43 67 50 33 30.07 29.89 29.75 10 10 10 24 13 32 0.00  
6 77 68 58 53 47 39 72 51 29 30.22 30.16 30.08 10 10 10 17 9 23 T  
7 86 76 65 64 60 54 79 61 42 30.17 30.06 29.92 10 10 10 23 13 29 T Rain
8 84 74 64 70 62 48 90 65 40 29.91 29.74 29.62 10 9 1 23 13 35 0.28 Rain , Thunderstorm
9 74 68 61 53 51 49 67 58 49 29.69 29.66 29.64 10 10 10 20 13 26 T  
10 70 66 61 51 49 47 72 58 44 29.89 29.77 29.69 10 10 10 21 11 25 0.00  
11 69 64 58 54 51 49 86 68 49 30.08 29.98 29.88 10 10 10 16 9 20 0.00  
12 65 61 56 54 51 49 86 73 60 30.15 30.11 30.08 10 10 10 16 8 20 0.00  
13 67 63 58 57 54 51 90 79 67 30.07 29.96 29.88 10 10 7 20 7 24 0.10 Rain
14 75 66 56 58 52 43 93 64 35 29.92 29.86 29.81 10 10 8 22 10 32 0.05  
15 70 63 56 46 42 36 67 50 32 30.12 29.99 29.90 10 10 10 21 12 28 0.00  
16 71 62 53 64 51 41 90 67 44 30.16 29.98 29.77 10 8 3 21 11 37 0.14 Rain
17 71 64 56 64 58 53 93 89 84 30.14 29.92 29.71 10 9 2 29 8 38 0.15 Rain
18 65 60 55 56 54 50 93 79 65 30.25 30.20 30.14 10 10 10 13 6 15 0.00  
19 73 65 56 61 56 52 93 77 61 30.17 30.08 29.97 10 10 10 13 6 15 0.00  
20 72 64 56 58 44 34 78 54 30 30.06 29.96 29.88 10 10 10 21 13 28 0.00  
21 72 62 51 52 40 35 69 49 28 30.19 30.10 30.01 10 10 10 23 12 30 0.00  
22 87 75 62 65 60 54 78 60 42 30.00 29.96 29.87 10 10 10 24 14 33 T  
23 76 69 61 61 54 48 78 63 47 30.23 30.17 30.02 10 10 10 15 9 20 0.00  
24 84 72 60 68 62 53 84 71 58 30.20 30.01 29.82 10 10 8 22 13 33 0.00  
25 88 78 67 67 60 48 84 59 33 29.94 29.77 29.70 10 9 6 20 12 28 0.00  
26 69 64 58 57 54 49 93 73 53 30.20 30.12 29.96 10 10 9 20 11 25 0.00  
27 61 60 58 61 58 55 100 92 84 30.20 30.13 29.99 10 3 0 18 10 22 0.04 Rain
28 78 69 60 70 67 60 100 88 76 29.97 29.83 29.76 10 6 0 28 12 36 0.68 Fog , Rain
29 83 75 67 68 64 57 90 67 43 29.98 29.88 29.78 10 10 9 21 11 26 0.00  
30 81 73 64 71 67 62 100 85 69 30.00 29.89 29.76 10 7 0 36 17 48 T Fog , Rain