Weather History for Chatham, MA

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Month of July, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 88 °F 81 °F 68 °F
Mean Temperature 80 °F 74 °F 65 °F
Min Temperature 75 °F 69 °F 63 °F
Degree Days  
Heating Degree Days (base 65) 0 0 0 0
Cooling Degree Days (base 65) 16 9 0 294
Growing Degree Days (base 50) 30 24 15 759
Dew Point  
Dew Point 77 °F 69 °F 56 °F
Precipitation  
Precipitation 1.85 in 0.13 in 0.00 in 4.06 in
Snowdepth - - - -
Wind  
Wind 16 mph 6 mph 0 mph
Gust Wind 28 mph 19 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.32 in 30.03 in 29.58 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Jul. 27, 2013 Rise Set
Actual Time 5:29 AM EDT 8:02 PM EDT
Civil Twilight 4:57 AM EDT 8:34 PM EDT
Nautical Twilight 4:17 AM EDT 9:14 PM EDT
Astronomical Twilight 3:33 AM EDT 9:58 PM EDT
Moon 10:42 PM EDT (7/27) 11:12 AM EDT (7/27)
Length of Visible Light 15h 36m
Length of Day
14h 33m
Waning Gibbous, 71% of the Moon is Illuminated
Jul 27
Waning Gibbous
Jul 29
Last Quarter
Aug 6
New
Aug 14
First Quarter
Aug 20
Full

Weather History Calendar

Precipitation Actual month total 4.06 Average Month Total: 1.96
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Rain
Actual:
75 | 68 0.04
Average:
74 | 60 0.06
Rain
Actual:
77 | 69 0.26
Average:
74 | 60 0.05
Fog
Actual:
81 | 69 0.00
Average:
75 | 60 0.05
Fog
Actual:
82 | 71 0.00
Average:
75 | 60 0.05
Scattered Clouds
Actual:
86 | 71 0.00
Average:
75 | 60 0.05
Clear
Actual:
88 | 72 0.00
Average:
75 | 60 0.05
Scattered Clouds
Actual:
88 | 72 0.00
Average:
75 | 60 0.05
Scattered Clouds
Actual:
84 | 73 0.00
Average:
75 | 60 0.05
Rain
Actual:
75 | 69 0.04
Average:
75 | 60 0.05
Fog
Actual:
82 | 68 0.00
Average:
75 | 60 0.05
Rain
Actual:
75 | 71 0.26
Average:
75 | 60 0.05
Fog
Actual:
72 | 66 0.00
Average:
75 | 60 0.05
Rain
Actual:
77 | 66 0.21
Average:
75 | 61 0.05
Fog
Actual:
82 | 69 0.01
Average:
75 | 61 0.06
Scattered Clouds
Actual:
88 | 73 0.00
Average:
75 | 61 0.06
Scattered Clouds
Actual:
88 | 70 0.01
Average:
75 | 61 0.06
Clear
Actual:
86 | 70 0.00
Average:
75 | 61 0.06
Rain
Actual:
87 | 72 0.00
Average:
75 | 61 0.06
Fog
Actual:
87 | 71 0.00
Average:
74 | 61 0.07
Partly Cloudy
Actual:
86 | 75 0.00
Average:
74 | 61 0.07
Rain
Actual:
78 | 66 0.02
Average:
74 | 61 0.07
Fog
Actual:
77 | 66 0.00
Average:
74 | 61 0.07
Fog
Actual:
84 | 68 0.01
Average:
74 | 61 0.08
Rain
Actual:
88 | 73 0.00
Average:
74 | 61 0.08
Rain
Actual:
73 | 64 0.18
Average:
74 | 61 0.08
Rain
Actual:
68 | 64 1.85
Average:
74 | 61 0.08
Scattered Clouds
Actual:
80 | 66 0.21
Average:
74 | 61 0.08
Rain
Actual:
79 | 68 0.01
Average:
74 | 61 0.08
Partly Cloudy
Actual:
80 | 66 0.94
Average:
74 | 61 0.08
Scattered Clouds
Actual:
81 | 66 0.01
Average:
74 | 61 0.08
Scattered Clouds
Actual:
81 | 63 0.00
Average:
74 | 61 0.08
 

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

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Jul high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 75 70 68 72 70 68 100 97 91 30.15 30.06 30.00 10 6 2 12 8 22 0.04 Rain
2 77 72 69 73 71 68 100 97 87 30.24 30.19 30.14 9 6 1 12 8 21 0.26 Rain
3 81 74 69 73 72 70 100 93 82 30.25 30.23 30.20 10 7 0 15 8 24 0.00 Fog
4 82 76 71 76 73 72 100 93 79 30.24 30.20 30.16 10 6 0 14 10 28 0.00 Fog
5 86 78 71 75 73 71 100 88 72 30.18 30.14 30.09 10 9 6 12 8 24 0.00  
6 88 80 72 76 74 71 100 85 69 30.10 30.05 29.99 10 9 7 13 7 25 0.00  
7 88 80 72 76 73 69 100 85 57 30.03 29.99 29.95 10 9 6 9 4 - 0.00  
8 84 78 73 74 73 71 100 88 69 30.06 29.98 29.95 10 8 2 13 7 24 0.00  
9 75 71 69 72 69 66 100 93 87 30.11 30.07 30.04 10 6 1 5 3 - 0.04 Rain
10 82 74 68 73 71 66 100 91 76 30.09 29.99 29.87 10 4 0 13 4 24 0.00 Fog
11 75 73 71 73 72 69 97 94 90 29.92 29.87 29.84 10 4 1 12 8 22 0.26 Rain
12 72 69 66 70 66 62 100 92 78 30.19 30.05 29.92 10 4 0 14 5 21 0.00 Fog
13 77 72 66 69 67 64 100 91 76 30.32 30.28 30.19 10 5 0 8 5 - 0.21 Fog , Rain
14 82 76 69 74 72 69 100 90 74 30.31 30.28 30.22 10 6 0 7 3 - 0.01 Fog
15 88 80 73 74 72 70 93 79 55 30.20 30.16 30.12 10 9 6 7 2 - 0.00  
16 88 79 70 73 68 65 94 72 51 30.17 30.13 30.09 10 10 7 9 3 - 0.01  
17 86 76 70 71 67 65 90 76 58 30.20 30.15 30.06 10 10 8 9 4 - 0.00  
18 87 79 72 73 70 67 93 76 53 30.05 30.01 29.99 10 10 6 10 6 21 0.00 Rain
19 87 78 71 77 74 70 100 88 72 29.98 29.91 29.81 5 3 0 15 8 25 0.00 Fog
20 86 80 75 75 74 71 94 84 72 29.81 29.77 29.70 8 5 2 15 10 26 0.00  
21 78 72 66 72 66 63 90 81 69 30.02 29.94 29.81 10 9 6 9 3 - 0.02 Rain
22 77 72 66 68 66 64 96 87 71 30.02 29.98 29.91 10 6 0 8 4 - 0.00 Fog
23 84 75 68 75 71 66 100 89 74 29.88 29.69 29.58 10 4 0 15 5 25 0.01 Fog
24 88 80 73 74 71 62 94 81 59 29.90 29.68 29.59 10 7 2 10 5 17 0.00 Rain
25 73 68 64 65 60 56 97 79 70 30.05 30.01 29.91 10 10 3 14 10 25 0.18 Rain
26 68 65 64 66 64 62 96 94 90 30.03 29.92 29.85 10 4 1 16 10 25 1.85 Rain
27 80 73 66 71 67 63 93 84 68 30.09 30.06 30.03 10 10 10 12 6 21 0.21  
28 79 73 68 72 69 66 100 91 76 30.05 30.00 29.97 10 8 0 9 3 - 0.01 Fog , Rain
29 80 72 66 72 69 65 96 87 72 30.07 30.04 30.01 10 9 2 8 4 - 0.94  
30 81 72 66 69 64 58 94 79 50 30.11 30.07 30.03 10 9 2 9 5 - 0.01  
31 81 72 63 64 62 59 90 72 52 30.14 30.10 30.08 10 10 10 10 3 - 0.00