Boston, MA

7:07 AM EDT on June 21, 2018 (GMT -0400)
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Weather History for KBOS - September, 2017

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Month of September, 2017

  Max Avg Min Sum
Temperature  
Max Temperature 88 °F 74 °F 59 °F
Mean Temperature 77 °F 67 °F 55 °F
Min Temperature 67 °F 60 °F 50 °F
Degree Days  
Heating Degree Days (base 65) 10 1 0 37
Cooling Degree Days (base 65) 12 4 0 111
Growing Degree Days (base 50) 26 17 4 511
Dew Point  
Dew Point 73 °F 58 °F 33 °F
Precipitation  
Precipitation 1.55 in 0.13 in 0.00 in 3.73 in
Snowdepth - - - -
Wind  
Wind 41 mph 11 mph 0 mph
Gust Wind 65 mph 27 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.34 in 30.01 in 29.69 in

Monthly Weather History Graph

Monthly Weather History Graph

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Astronomy

Sep. 06, 2017 Rise Set
Actual Time 6:14 AM EDT 7:09 PM EDT
Civil Twilight 5:46 AM EDT 7:37 PM EDT
Nautical Twilight 5:12 AM EDT 8:11 PM EDT
Astronomical Twilight 4:36 AM EDT 8:46 PM EDT
Moon 7:37 PM EDT (9/6) 6:23 AM EDT (9/6)
Length of Visible Light 13h 51m
Length of Day
12h 54m
Full, 100% of the Moon is Illuminated
Sep 6
Full
Sep 13
Last Quarter
Sep 20
New
Sep 27
First Quarter
Oct 5
Full

Daily Weather History & Observations

2017 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 69 61 53 42 37 33 59 43 26 30.17 30.03 29.95 10 10 10 23 15 32 0.00  
2 68 61 53 50 42 36 69 51 32 30.24 30.20 30.17 10 10 10 15 10 21 0.00  
3 64 61 57 64 57 49 100 82 64 30.18 29.91 29.72 10 5 0 28 13 37 0.28 Rain
4 81 70 58 61 56 54 93 68 42 29.89 29.84 29.78 10 10 10 22 14 30 0.00  
5 88 77 65 68 65 60 93 72 51 29.83 29.78 29.73 10 10 10 24 17 33 0.00  
6 79 71 62 72 66 60 100 86 71 29.91 29.87 29.82 10 7 2 21 8 28 0.22 Rain , Thunderstorm
7 76 68 60 61 58 52 97 72 46 29.94 29.81 29.72 10 8 1 23 11 34 0.60 Rain
8 74 67 59 54 50 46 78 58 38 30.12 30.03 29.95 10 10 10 16 10 22 0.00  
9 68 62 55 54 52 50 83 71 58 30.25 30.20 30.13 10 10 10 14 8 18 0.01 Rain
10 69 63 56 56 52 48 86 72 58 30.33 30.30 30.25 10 10 10 16 9 21 0.00  
11 80 68 55 55 48 45 72 51 30 30.32 30.19 30.06 10 10 10 15 10 20 0.00  
12 86 74 61 54 51 47 72 50 27 30.06 29.94 29.85 10 10 10 20 9 23 0.00  
13 78 71 64 64 57 53 76 62 47 29.90 29.85 29.82 10 10 9 15 9 22 0.03 Rain , Thunderstorm
14 84 76 67 68 65 61 90 72 54 29.94 29.87 29.82 10 9 0 41 11 65 0.33 Fog , Rain , Thunderstorm
15 77 72 66 69 67 65 100 88 76 30.12 30.05 29.95 10 7 0 15 7 18 0.21 Fog , Rain
16 73 68 62 68 65 62 100 92 84 30.18 30.15 30.12 10 3 0 9 4 11 0.00 Fog
17 73 67 61 67 64 62 100 90 79 30.19 30.16 30.13 10 3 0 13 4 14 0.00 Fog
18 68 66 63 65 65 64 100 94 87 30.19 30.17 30.14 10 4 0 13 7 15 T Fog , Rain
19 66 65 63 64 63 63 100 97 93 30.16 30.07 29.96 10 3 0 22 14 25 0.04 Fog , Rain
20 72 68 63 67 66 63 100 92 84 29.95 29.88 29.85 10 4 1 28 20 36 0.27 Rain
21 72 68 63 64 58 51 84 67 49 30.04 29.97 29.88 10 10 10 32 23 44 0.00  
22 63 60 57 62 57 54 100 86 72 30.04 30.00 29.99 10 6 2 31 22 38 0.16 Rain
23 76 68 60 62 60 57 100 81 61 30.05 30.02 29.99 10 7 0 22 9 27 0.03 Fog , Rain
24 79 70 61 65 63 61 100 80 60 30.07 30.04 30.01 10 10 10 13 3 16 0.00  
25 78 71 64 67 65 61 100 78 56 30.09 30.06 30.03 10 10 10 13 5 15 0.00  
26 80 72 63 69 67 64 100 87 74 30.06 30.02 29.97 10 5 0 12 5 13 0.00 Fog
27 86 76 65 73 69 65 100 83 65 29.97 29.87 29.76 10 10 10 16 9 21 0.00  
28 78 68 57 73 58 40 100 67 33 29.91 29.74 29.69 10 10 10 25 13 31 0.00  
29 68 60 52 51 43 38 86 62 37 30.05 29.99 29.91 10 10 10 15 9 20 0.00  
30 59 55 50 53 50 45 93 83 72 30.34 30.18 30.04 10 8 2 26 11 36 1.55 Rain , Thunderstorm