Weather History for Chatham, MA

Change the Weather History Date:

Month of August, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 84 °F 77 °F 69 °F
Mean Temperature 76 °F 69 °F 62 °F
Min Temperature 71 °F 63 °F 53 °F
Degree Days  
Heating Degree Days (base 65) 3 0 0 4
Cooling Degree Days (base 65) 10 4 0 139
Growing Degree Days (base 50) 26 19 12 600
Dew Point  
Dew Point 72 °F 62 °F 42 °F
Precipitation  
Precipitation 0.35 in 0.05 in 0.00 in 1.40 in
Snowdepth - - - -
Wind  
Wind 17 mph 5 mph 0 mph
Gust Wind 33 mph 18 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.37 in 30.02 in 29.68 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

Aug. 17, 2013 Rise Set
Actual Time 5:50 AM EDT 7:36 PM EDT
Civil Twilight 5:20 AM EDT 8:06 PM EDT
Nautical Twilight 4:44 AM EDT 8:42 PM EDT
Astronomical Twilight 4:06 AM EDT 9:20 PM EDT
Moon 4:50 PM EDT (8/17) 1:48 AM EDT (8/17)
Length of Visible Light 14h 45m
Length of Day
13h 45m
Waxing Gibbous, 84% of the Moon is Illuminated
Aug 17
Waxing Gibbous
Aug 20
Full
Aug 28
Last Quarter
Sep 5
New
Sep 12
First Quarter

Weather History Calendar

Precipitation Actual month total 1.40 Average Month Total: 3.58
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Rain
Actual:
79 | 66 0.07
Average:
74 | 62 0.08
Rain
Actual:
79 | 64 0.35
Average:
74 | 62 0.09
Rain
Actual:
75 | 69 0.05
Average:
74 | 62 0.09
Thunderstorm
Actual:
80 | 62 0.01
Average:
75 | 62 0.09
Clear
Actual:
73 | 59 0.00
Average:
75 | 62 0.10
Clear
Actual:
75 | 55 0.00
Average:
75 | 62 0.10
Clear
Actual:
77 | 57 0.00
Average:
75 | 62 0.10
Partly Cloudy
Actual:
81 | 64 0.01
Average:
75 | 62 0.11
Rain
Actual:
75 | 66 0.21
Average:
75 | 62 0.11
Scattered Clouds
Actual:
84 | 66 0.00
Average:
75 | 62 0.11
Clear
Actual:
77 | 63 0.00
Average:
75 | 62 0.11
Partly Cloudy
Actual:
79 | 64 0.00
Average:
75 | 62 0.12
Rain
Actual:
71 | 64 0.26
Average:
75 | 62 0.12
Scattered Clouds
Actual:
75 | 62 0.00
Average:
75 | 62 0.12
Clear
Actual:
75 | 61 0.00
Average:
75 | 61 0.12
Scattered Clouds
Actual:
78 | 66 0.00
Average:
74 | 61 0.12
Clear
Actual:
77 | 60 0.00
Average:
74 | 61 0.12
Rain
Actual:
75 | 62 0.11
Average:
74 | 61 0.12
Clear
Actual:
81 | 57 0.01
Average:
74 | 61 0.12
Rain
Actual:
82 | 68 0.00
Average:
74 | 61 0.12
Scattered Clouds
Actual:
84 | 64 0.01
Average:
74 | 61 0.12
Partly Cloudy
Actual:
81 | 71 0.01
Average:
74 | 61 0.12
Partly Cloudy
Actual:
75 | 63 0.00
Average:
73 | 60 0.13
Clear
Actual:
72 | 54 0.00
Average:
73 | 60 0.13
Clear
Actual:
81 | 53 0.00
Average:
73 | 60 0.13
Partly Cloudy
Actual:
77 | 69 0.00
Average:
73 | 60 0.13
Rain
Actual:
73 | 64 0.29
Average:
73 | 60 0.13
Fog
Actual:
72 | 64 0.01
Average:
72 | 59 0.13
Fog
Actual:
69 | 62 0.00
Average:
72 | 59 0.13
Partly Cloudy
Actual:
73 | 60 0.00
Average:
72 | 59 0.13
Overcast
Actual:
75 | 70 0.00
Average:
72 | 59 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

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Aug high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 79 72 66 67 65 61 94 82 58 30.08 30.00 29.92 10 9 3 9 4 16 0.07 Rain
2 79 72 64 72 66 62 100 87 69 29.92 29.85 29.83 10 7 1 14 4 23 0.35 Rain
3 75 72 69 68 65 63 87 80 69 29.91 29.86 29.82 10 10 5 13 7 25 0.05 Rain
4 80 70 62 64 59 56 86 70 48 29.87 29.82 29.79 10 10 10 9 3 17 0.01 Thunderstorm
5 73 66 59 58 53 47 90 63 39 30.05 29.96 29.86 10 10 10 10 5 18 0.00  
6 75 64 55 57 53 48 89 65 42 30.19 30.13 30.05 10 10 10 7 3 - 0.00  
7 77 66 57 59 55 47 93 69 37 30.22 30.20 30.17 10 10 10 8 2 - 0.00  
8 81 72 64 70 66 59 94 83 69 30.17 30.12 30.08 10 10 10 13 5 23 0.01  
9 75 70 66 72 69 64 94 92 87 30.10 29.96 29.83 10 7 1 16 10 33 0.21 Rain
10 84 74 66 72 66 57 96 77 44 30.01 29.89 29.81 10 7 2 13 6 21 0.00  
11 77 70 63 60 55 49 78 60 39 30.09 30.06 30.01 10 10 10 8 3 - 0.00  
12 79 71 64 70 65 60 91 81 64 30.06 30.00 29.96 10 10 10 13 5 20 0.00  
13 71 68 64 70 66 64 100 93 83 29.94 29.82 29.69 10 4 0 7 2 - 0.26 Fog , Rain
14 75 68 62 66 58 51 94 73 44 29.95 29.76 29.68 10 8 3 10 3 23 0.00  
15 75 68 61 55 52 42 75 57 32 30.10 30.06 29.97 10 10 10 12 5 21 0.00  
16 78 72 66 62 59 51 81 65 43 30.22 30.19 30.16 10 10 10 12 6 20 0.00  
17 77 68 60 63 60 57 94 76 55 30.30 30.26 30.22 10 10 7 9 1 - 0.00  
18 75 68 62 65 60 57 93 82 59 30.29 30.23 30.11 10 9 5 6 1 - 0.11 Rain
19 81 68 57 68 62 56 93 78 62 30.09 30.03 29.98 10 10 9 10 3 17 0.01  
20 82 74 68 67 64 62 87 72 58 30.11 30.06 29.99 10 10 9 9 4 - 0.00 Rain
21 84 73 64 70 66 61 94 80 58 30.16 30.12 30.07 10 8 1 9 3 17 0.01  
22 81 76 71 72 70 67 94 88 74 30.07 29.97 29.87 10 7 2 15 8 23 0.01  
23 75 68 63 70 62 55 94 75 53 30.10 29.93 29.83 10 10 4 14 8 23 0.00  
24 72 62 54 58 51 44 90 63 39 30.34 30.26 30.12 10 10 10 13 5 22 0.00  
25 81 66 53 61 56 46 90 65 39 30.37 30.31 30.24 10 10 10 12 4 16 0.00  
26 77 73 69 67 63 55 90 75 59 30.23 30.06 29.92 10 10 10 17 9 28 0.00  
27 73 68 64 70 66 64 100 92 81 29.91 29.87 29.85 10 4 0 8 3 - 0.29 Fog , Rain
28 72 68 64 65 64 63 100 90 78 29.95 29.91 29.86 10 5 0 9 3 16 0.01 Fog
29 69 65 62 65 61 55 96 87 77 30.04 30.01 29.94 10 7 0 14 6 20 0.00 Fog
30 73 66 60 67 62 56 90 82 68 30.01 29.94 29.88 10 10 8 12 3 21 0.00  
31 75 72 70 70 69 67 94 88 79 29.90 29.88 29.86 10 8 7 14 9 23 0.00