Weather History for Portsmouth, NH

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Month of January, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 53 °F 37 °F 14 °F
Mean Temperature 46 °F 29 °F 8 °F
Min Temperature 39 °F 22 °F 1 °F
Degree Days  
Heating Degree Days (base 65) 58 36 18 1105
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 49 °F 19 °F -10 °F
Precipitation  
Precipitation 1.22 in 0.10 in 0.00 in 2.97 in
Snowdepth 3.0 in 2.1 in 1.0 in -
Wind  
Wind 25 mph 8 mph 0 mph
Gust Wind 40 mph 24 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.59 in 29.97 in 29.12 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Jan. 12, 2012 Rise Set
Actual Time 7:13 AM EST 4:29 PM EST
Civil Twilight 6:41 AM EST 5:01 PM EST
Nautical Twilight 6:06 AM EST 5:36 PM EST
Astronomical Twilight 5:32 AM EST 6:10 PM EST
Moon 8:39 PM EST (1/12) 8:48 AM EST (1/12)
Length of Visible Light 10h 19m
Length of Day
9h 16m
Waning Gibbous, 87% of the Moon is Illuminated
Jan 12
Waning Gibbous
Jan 16
Last Quarter
Jan 23
New
Jan 30
First Quarter
Feb 7
Full

Weather History Calendar

Precipitation Actual month total 2.97 Average Month Total: 4.78
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Rain
Actual:
48 | 32 0.10
Average:
34 | 20 0.14
Rain
Actual:
45 | 30 0.04
Average:
34 | 20 0.14
Scattered Clouds
Actual:
29 | 8 0.00
Average:
33 | 19 0.14
Partly Cloudy
Actual:
24 | 5 0.00
Average:
33 | 19 0.14
Snow
Actual:
36 | 23 0.00
Average:
33 | 19 0.13
Snow
Actual:
39 | 22 0.00
Average:
32 | 18 1.21
Partly Cloudy
Actual:
45 | 25 0.00
Average:
32 | 18 0.13
Partly Cloudy
Actual:
41 | 24 0.00
Average:
32 | 17 0.13
Partly Cloudy
Actual:
36 | 21 0.00
Average:
31 | 16 0.12
Partly Cloudy
Actual:
44 | 28 0.00
Average:
31 | 16 0.12
Partly Cloudy
Actual:
35 | 23 0.00
Average:
30 | 15 0.12
Snow
Actual:
36 | 29 0.90
Average:
30 | 14 0.12
Snow
Actual:
42 | 27 0.04
Average:
29 | 14 0.11
Partly Cloudy
Actual:
31 | 10 0.00
Average:
29 | 13 0.11
Scattered Clouds
Actual:
14 | 1 0.00
Average:
28 | 13 0.11
Snow
Actual:
28 | 5 0.00
Average:
28 | 13 0.11
Snow
Actual:
41 | 29 0.16
Average:
28 | 13 0.11
Rain
Actual:
44 | 15 0.00
Average:
28 | 12 0.11
Snow
Actual:
31 | 10 0.02
Average:
28 | 12 0.11
Snow
Actual:
30 | 16 0.11
Average:
28 | 12 0.11
Snow
Actual:
18 | 12 0.07
Average:
28 | 12 0.11
Partly Cloudy
Actual:
25 | 4 0.00
Average:
28 | 12 0.11
Snow
Actual:
45 | 23 0.13
Average:
28 | 12 0.11
Rain
Actual:
53 | 39 0.01
Average:
28 | 12 0.11
Partly Cloudy
Actual:
40 | 33 0.00
Average:
29 | 13 0.11
Snow
Actual:
39 | 29 0.15
Average:
29 | 13 0.11
Rain
Actual:
42 | 33 1.22
Average:
30 | 14 0.12
Partly Cloudy
Actual:
45 | 35 0.00
Average:
30 | 14 0.12
Scattered Clouds
Actual:
41 | 31 0.00
Average:
31 | 15 0.12
Partly Cloudy
Actual:
37 | 24 0.00
Average:
31 | 15 0.12
Snow
Actual:
35 | 23 0.02
Average:
32 | 16 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
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 48 40 32 44 38 32 99 88 64 30.03 29.88 29.63 10 10 7 12 6 - 0.10 Rain
2 45 38 30 46 27 15 100 64 38 29.68 29.58 29.50 10 10 7 20 9 29 0.04 Rain
3 29 19 8 15 3 -6 55 46 37 30.01 29.85 29.68 10 10 10 22 12 29 0.00  
4 24 14 5 4 -3 -7 62 45 26 30.08 30.00 29.89 10 10 10 14 8 - 0.00  
5 36 30 23 19 12 4 59 50 43 29.90 29.81 29.71 10 10 10 16 8 22 0.00 Snow
6 39 30 22 27 20 8 86 71 54 29.93 29.85 29.75 10 9 2 7 3 - 0.00 Snow
7 45 35 25 36 29 23 91 78 61 29.85 29.74 29.66 10 10 6 9 1 - 0.00  
8 41 34 24 27 21 12 77 59 44 30.26 30.09 29.87 10 10 10 14 7 - 0.00  
9 36 28 21 17 12 10 65 52 33 30.29 30.18 29.97 10 10 10 9 5 - 0.00  
10 44 36 28 26 23 14 87 62 45 29.94 29.84 29.72 10 10 10 15 5 22 0.00  
11 35 29 23 27 19 10 71 61 40 30.15 30.10 29.96 10 10 10 12 6 - 0.00  
12 36 32 29 35 30 26 100 87 66 30.09 29.79 29.53 10 4 1 17 12 31 0.90 Rain , Snow
13 42 34 27 37 27 17 100 82 56 29.58 29.37 29.12 10 6 0 22 8 40 0.04 Fog , Rain , Snow
14 31 21 10 21 12 -5 68 57 46 30.00 29.78 29.52 10 10 10 21 14 28 0.00  
15 14 8 1 -5 -8 -10 58 50 41 30.48 30.28 30.03 10 10 10 17 11 23 0.00  
16 28 16 5 25 3 -7 87 53 36 30.56 30.40 30.10 10 10 3 10 6 - 0.00 Snow
17 41 35 29 42 33 26 100 91 71 30.07 29.82 29.42 10 6 1 10 5 - 0.16 Rain , Snow
18 44 30 15 43 16 -3 100 53 33 30.14 29.73 29.37 10 10 8 25 13 40 0.00 Rain
19 31 20 10 27 13 -2 88 67 48 30.32 30.14 29.96 10 7 1 14 6 - 0.02 Snow
20 30 24 16 29 15 -2 94 72 39 30.27 30.04 29.91 10 7 0 20 7 29 0.11 Fog , Snow
21 18 15 12 12 7 -2 86 69 46 30.37 30.25 30.17 10 6 0 10 6 - 0.07 Fog , Snow
22 25 14 4 16 9 0 82 71 53 30.59 30.53 30.38 10 10 10 7 4 - 0.00  
23 45 34 23 45 32 17 100 89 73 30.52 30.21 29.87 10 5 0 15 4 - 0.13 Fog , Rain , Snow
24 53 46 39 49 40 25 100 80 56 30.00 29.89 29.83 10 8 0 13 8 21 0.01 Fog , Rain
25 40 36 33 25 23 21 67 60 50 30.17 30.12 30.01 10 10 10 22 9 29 0.00  
26 39 34 29 32 24 16 100 70 39 30.21 30.14 30.02 10 7 1 10 5 - 0.15 Rain , Snow
27 42 38 33 42 37 30 100 97 71 29.99 29.57 29.29 10 5 1 17 10 25 1.22 Rain
28 45 40 35 30 26 22 74 61 42 29.98 29.85 29.57 10 10 10 23 14 30 0.00  
29 41 36 31 27 14 11 67 42 28 30.04 29.97 29.84 10 10 10 16 12 29 0.00  
30 37 31 24 21 13 9 64 49 34 30.28 30.09 29.92 10 10 10 22 9 28 0.00  
31 35 29 23 34 25 14 93 87 67 30.28 30.16 30.03 10 6 1 10 3 - 0.02 Snow