Weather History for Portsmouth, NH

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Month of September, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 86 °F 71 °F 54 °F
Mean Temperature 74 °F 62 °F 49 °F
Min Temperature 66 °F 52 °F 42 °F
Degree Days  
Heating Degree Days (base 65) 16 5 0 144
Cooling Degree Days (base 65) 10 1 0 42
Growing Degree Days (base 50) 24 12 0 351
Dew Point  
Dew Point 74 °F 54 °F 36 °F
Precipitation  
Precipitation 1.04 in 0.11 in 0.00 in 3.43 in
Snowdepth - - - -
Wind  
Wind 23 mph 6 mph 0 mph
Gust Wind 32 mph 22 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.35 in 30.02 in 29.62 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 13, 2012 Rise Set
Actual Time 6:21 AM EDT 6:56 PM EDT
Civil Twilight 5:52 AM EDT 7:24 PM EDT
Nautical Twilight 5:18 AM EDT 7:58 PM EDT
Astronomical Twilight 4:43 AM EDT 8:33 PM EDT
Moon 3:34 AM EDT (9/13) 5:19 PM EDT (9/13)
Length of Visible Light 13h 32m
Length of Day
12h 34m
Waning Crescent, 7% of the Moon is Illuminated
Sep 13
Waning Crescent
Sep 15
New
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter

Weather History Calendar

Precipitation Actual month total 3.43 Average Month Total: 3.43
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
73 | 58 0.00
Average:
75 | 55 0.08
Rain
Actual:
72 | 58 0.02
Average:
75 | 55 0.09
Fog
Actual:
74 | 57 0.00
Average:
74 | 55 0.09
Rain
Actual:
66 | 56 0.43
Average:
74 | 55 0.09
Rain
Actual:
82 | 66 0.25
Average:
74 | 55 0.10
Partly Cloudy
Actual:
79 | 64 0.00
Average:
74 | 54 0.10
Partly Cloudy
Actual:
86 | 63 0.00
Average:
73 | 54 0.11
Thunderstorm
Actual:
81 | 64 0.32
Average:
73 | 54 0.11
Rain
Actual:
73 | 56 0.01
Average:
73 | 54 0.11
Partly Cloudy
Actual:
67 | 51 0.00
Average:
72 | 54 0.12
Scattered Clouds
Actual:
73 | 47 0.00
Average:
72 | 53 0.12
Clear
Actual:
75 | 48 0.00
Average:
71 | 53 0.12
Clear
Actual:
82 | 52 0.00
Average:
71 | 53 0.12
Scattered Clouds
Actual:
80 | 58 0.00
Average:
71 | 53 0.13
Rain
Actual:
74 | 53 0.00
Average:
71 | 52 0.13
Clear
Actual:
68 | 47 0.00
Average:
70 | 52 0.13
Partly Cloudy
Actual:
71 | 42 0.00
Average:
70 | 52 0.13
Rain
Actual:
70 | 51 0.00
Average:
70 | 51 0.13
Rain
Actual:
71 | 52 0.98
Average:
69 | 51 0.13
Scattered Clouds
Actual:
62 | 45 0.00
Average:
69 | 50 0.12
Partly Cloudy
Actual:
62 | 43 0.00
Average:
68 | 50 0.12
Rain
Actual:
67 | 53 0.02
Average:
68 | 49 0.12
Rain
Actual:
70 | 49 0.00
Average:
67 | 49 0.12
Scattered Clouds
Actual:
66 | 42 0.00
Average:
67 | 48 0.12
Scattered Clouds
Actual:
72 | 42 0.00
Average:
66 | 47 0.12
Rain
Actual:
73 | 58 0.00
Average:
66 | 47 0.11
Rain
Actual:
67 | 49 0.00
Average:
65 | 46 0.11
Rain
Actual:
54 | 44 1.04
Average:
65 | 45 0.11
Rain
Actual:
56 | 50 0.03
Average:
64 | 45 0.12
Rain
Actual:
58 | 51 0.33
Average:
64 | 44 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

2012 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 73 66 58 63 57 51 96 72 46 30.13 30.02 29.85 10 10 7 12 5 - 0.00  
2 72 64 58 60 58 56 96 86 58 30.17 30.12 30.09 10 10 7 12 3 - 0.02 Rain
3 74 65 57 60 58 55 100 84 60 30.24 30.19 30.16 10 9 2 12 5 - 0.00 Fog
4 66 61 56 66 62 53 100 95 82 30.16 30.04 29.87 10 5 0 10 3 - 0.43 Fog , Rain
5 82 74 66 74 68 63 100 90 62 29.86 29.77 29.67 10 7 0 14 6 18 0.25 Fog , Rain
6 79 72 64 66 65 63 100 87 61 29.90 29.86 29.83 10 10 8 10 2 - 0.00  
7 86 74 63 70 65 55 100 80 34 29.92 29.88 29.83 10 9 5 9 3 - 0.00  
8 81 72 64 71 68 62 100 88 63 29.89 29.74 29.62 10 6 1 23 8 32 0.32 Rain , Thunderstorm
9 73 65 56 61 56 50 99 78 46 29.85 29.79 29.68 10 10 10 10 7 - 0.01 Rain
10 67 60 51 55 48 42 98 67 47 30.03 29.92 29.85 10 10 10 20 8 28 0.00  
11 73 60 47 53 45 40 87 63 30 30.25 30.16 30.03 10 10 10 9 6 - 0.00  
12 75 62 48 55 51 46 96 73 40 30.35 30.32 30.26 10 10 10 10 4 - 0.00  
13 82 67 52 61 57 52 99 76 39 30.34 30.29 30.24 10 10 10 10 4 - 0.00  
14 80 68 58 64 61 58 99 79 57 30.24 30.15 30.05 10 9 4 12 5 - 0.00  
15 74 64 53 61 52 43 96 68 39 30.05 30.01 29.97 10 10 7 20 9 26 0.00 Rain
16 68 58 47 46 42 36 87 60 32 30.08 30.03 29.97 10 10 10 15 6 21 0.00  
17 71 56 42 54 47 40 94 74 40 30.10 30.06 30.02 10 10 10 10 2 - 0.00  
18 70 60 51 65 59 51 99 85 69 30.04 29.89 29.68 10 9 6 22 9 32 0.00 Rain
19 71 62 52 70 52 36 100 66 34 30.21 29.92 29.68 10 9 2 17 11 23 0.98 Rain
20 62 54 45 44 41 38 93 66 46 30.29 30.23 30.17 10 10 10 9 6 - 0.00  
21 62 52 43 54 49 42 95 85 66 30.18 30.13 30.06 10 9 3 10 4 - 0.00  
22 67 60 53 59 56 53 100 93 76 30.05 29.94 29.82 10 6 1 10 7 - 0.02 Rain
23 70 62 49 61 50 38 100 69 32 30.08 29.91 29.78 10 10 8 15 8 23 0.00 Rain
24 66 54 42 47 42 36 95 68 32 30.12 30.08 30.04 10 10 10 9 4 - 0.00  
25 72 57 42 50 43 38 86 61 34 30.14 30.11 30.08 10 10 10 12 6 22 0.00  
26 73 65 58 61 57 50 87 76 64 30.11 30.04 29.97 10 10 7 12 6 - 0.00 Rain
27 67 58 49 61 50 39 100 75 35 30.26 30.12 29.98 10 9 5 16 5 22 0.00 Rain
28 54 49 44 53 49 41 100 92 81 30.26 30.17 30.04 10 5 2 13 4 18 1.04 Rain
29 56 53 50 54 51 49 100 94 82 30.01 29.94 29.89 10 5 1 15 9 21 0.03 Rain
30 58 56 51 56 54 50 100 96 88 29.91 29.78 29.69 10 7 3 9 5 - 0.33 Rain