Weather History for Chatham, MA

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Month of March, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 66 °F 49 °F 35 °F
Mean Temperature 57 °F 42 °F 30 °F
Min Temperature 50 °F 36 °F 24 °F
Degree Days  
Heating Degree Days (base 65) 36 23 8 703
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 7 1 0 16
Dew Point  
Dew Point 56 °F 35 °F 6 °F
Precipitation  
Precipitation 0.59 in 0.05 in 0.00 in 1.48 in
Snowdepth - - - -
Wind  
Wind 23 mph 7 mph 0 mph
Gust Wind 36 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.62 in 30.08 in 29.40 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Mar. 18, 2012 Rise Set
Actual Time 6:45 AM EDT 6:50 PM EDT
Civil Twilight 6:18 AM EDT 7:18 PM EDT
Nautical Twilight 5:45 AM EDT 7:50 PM EDT
Astronomical Twilight 5:12 AM EDT 8:23 PM EDT
Moon 4:25 AM EDT (3/18) 3:11 PM EDT (3/18)
Length of Visible Light 12h 59m
Length of Day
12h 04m
Waning Crescent, 15% of the Moon is Illuminated
Mar 18
Waning Crescent
Mar 22
New
Mar 30
First Quarter
Apr 6
Full
Apr 13
Last Quarter

Weather History Calendar

Precipitation Actual month total 1.48 Average Month Total: 4.41
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Snow
Actual:
42 | 33 0.59
Average:
40 | 27 0.13
Snow
Actual:
37 | 33 0.00
Average:
40 | 27 0.13
Rain
Actual:
48 | 37 0.11
Average:
40 | 27 0.13
Rain
Actual:
42 | 30 0.03
Average:
40 | 27 0.13
Scattered Clouds
Actual:
41 | 30 0.00
Average:
40 | 27 0.13
Scattered Clouds
Actual:
35 | 24 0.00
Average:
40 | 27 0.13
Clear
Actual:
48 | 30 0.00
Average:
40 | 27 0.13
Scattered Clouds
Actual:
53 | 46 0.00
Average:
40 | 27 0.13
Rain
Actual:
51 | 33 0.08
Average:
40 | 27 0.13
Snow
Actual:
39 | 25 0.18
Average:
40 | 27 0.13
Clear
Actual:
46 | 25 0.00
Average:
40 | 27 0.13
Clear
Actual:
57 | 39 0.00
Average:
40 | 28 0.14
Rain
Actual:
50 | 44 0.00
Average:
40 | 28 0.14
Fog
Actual:
48 | 42 0.00
Average:
40 | 28 0.14
Mostly Cloudy
Actual:
43 | 37 0.00
Average:
40 | 28 0.14
Rain
Actual:
43 | 35 0.08
Average:
40 | 29 0.14
Partly Cloudy
Actual:
51 | 36 0.00
Average:
40 | 29 0.14
Fog
Actual:
51 | 37 0.00
Average:
41 | 29 0.14
Scattered Clouds
Actual:
64 | 42 0.00
Average:
41 | 30 0.15
Fog
Actual:
61 | 42 0.00
Average:
42 | 30 0.15
Fog
Actual:
66 | 46 0.01
Average:
42 | 31 0.15
Fog
Actual:
59 | 48 0.00
Average:
43 | 31 0.15
Scattered Clouds
Actual:
66 | 50 0.01
Average:
44 | 32 0.15
Partly Cloudy
Actual:
55 | 44 0.00
Average:
44 | 32 0.16
Rain
Actual:
46 | 42 0.08
Average:
45 | 33 0.16
Mostly Cloudy
Actual:
51 | 33 0.01
Average:
45 | 33 0.16
Scattered Clouds
Actual:
42 | 30 0.00
Average:
45 | 33 0.16
Rain
Actual:
48 | 30 0.10
Average:
45 | 34 0.16
Rain
Actual:
46 | 39 0.03
Average:
45 | 34 0.15
Scattered Clouds
Actual:
46 | 34 0.00
Average:
45 | 34 0.15
Rain
Actual:
42 | 32 0.17
Average:
45 | 34 0.15
 

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
Mar high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 42 38 33 40 37 30 100 93 87 29.91 29.75 29.66 9 3 1 23 18 32 0.59 Rain , Snow
2 37 35 33 30 28 25 89 75 64 30.15 30.08 29.94 10 10 8 10 7 22 0.00 Snow
3 48 42 37 49 41 30 100 93 70 29.99 29.60 29.40 10 5 0 15 11 29 0.11 Fog , Rain
4 42 36 30 36 31 24 93 77 57 29.72 29.63 29.55 10 10 7 9 3 - 0.03 Rain
5 41 36 30 23 16 9 69 49 27 30.26 29.96 29.67 10 10 10 15 6 30 0.00  
6 35 30 24 21 13 6 69 53 30 30.62 30.51 30.28 10 10 10 14 7 24 0.00  
7 48 39 30 42 36 22 90 79 70 30.62 30.48 30.35 10 9 7 17 8 30 0.00  
8 53 50 46 46 44 42 90 82 71 30.34 30.16 29.89 10 9 7 18 14 36 0.00  
9 51 42 33 47 32 21 87 69 42 30.14 30.00 29.79 10 9 3 18 12 33 0.08 Rain
10 39 32 25 31 26 18 96 76 56 30.56 30.34 30.15 10 6 0 16 8 29 0.18 Fog , Snow
11 46 36 25 39 32 20 86 73 59 30.55 30.42 30.30 10 10 10 20 8 30 0.00  
12 57 48 39 43 39 36 89 76 51 30.30 30.24 30.17 10 10 9 13 8 22 0.00  
13 50 46 44 46 44 42 100 92 86 30.16 30.05 29.96 10 5 0 14 8 24 0.00 Fog , Rain
14 48 45 42 48 43 39 100 92 77 30.25 30.06 29.97 10 5 0 13 6 22 0.00 Fog
15 43 40 37 39 33 30 93 77 67 30.38 30.34 30.25 10 10 8 13 6 18 0.00  
16 43 38 35 41 36 30 100 85 75 30.35 30.22 30.13 10 8 0 6 3 - 0.08 Fog , Rain
17 51 44 36 41 38 33 100 82 58 30.39 30.30 30.17 10 8 2 12 3 16 0.00  
18 51 44 37 43 41 36 100 90 77 30.38 30.28 30.18 10 7 0 15 8 26 0.00 Fog
19 64 52 42 50 45 42 100 89 60 30.27 30.20 30.16 10 7 1 10 8 20 0.00  
20 61 50 42 51 46 40 100 89 72 30.34 30.31 30.27 10 6 0 12 3 18 0.00 Fog
21 66 55 46 56 51 46 100 93 70 30.37 30.32 30.29 10 4 0 12 6 17 0.01 Fog
22 59 52 48 55 52 48 100 94 84 30.27 30.16 30.01 10 4 0 15 9 26 0.00 Fog
23 66 57 50 54 44 31 96 63 28 30.13 30.05 30.00 10 10 6 8 4 - 0.01  
24 55 50 44 38 34 28 73 61 34 30.19 30.12 30.07 10 10 10 12 6 - 0.00  
25 46 44 42 45 41 35 100 91 73 30.07 29.84 29.69 10 6 2 12 6 16 0.08 Rain
26 51 42 33 45 32 14 100 70 40 29.93 29.71 29.63 10 10 9 18 7 34 0.01  
27 42 36 30 19 12 7 59 39 25 30.18 30.08 29.94 10 10 10 16 11 32 0.00  
28 48 39 30 45 35 17 93 75 44 30.14 29.80 29.57 10 9 5 14 4 26 0.10 Rain
29 46 42 39 45 39 28 100 85 63 29.90 29.67 29.51 10 8 4 13 5 24 0.03 Rain
30 46 40 34 29 23 12 68 50 26 30.06 29.99 29.91 10 10 10 12 7 26 0.00  
31 42 37 32 36 33 29 93 84 62 30.06 29.96 29.89 10 9 3 9 5 17 0.17 Rain