Weather History for Portsmouth, NH

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Month of December, 2010

  Max Avg Min Sum
Temperature  
Max Temperature 52 °F 36 °F 20 °F
Mean Temperature 48 °F 30 °F 16 °F
Min Temperature 45 °F 23 °F 8 °F
Degree Days  
Heating Degree Days (base 65) 49 35 18 1095
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 52 °F 19 °F 0 °F
Precipitation  
Precipitation 1.31 in 0.10 in 0.00 in 3.05 in
Snowdepth 7.0 in 3.5 in 1.0 in -
Wind  
Wind 32 mph 10 mph 0 mph
Gust Wind 47 mph 25 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.45 in 29.76 in 28.90 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 16, 2010 Rise Set
Actual Time 7:08 AM EST 4:09 PM EST
Civil Twilight 6:36 AM EST 4:41 PM EST
Nautical Twilight 6:00 AM EST 5:17 PM EST
Astronomical Twilight 5:25 AM EST 5:52 PM EST
Moon 12:44 PM EST (12/16) 2:18 AM EST (12/16)
Length of Visible Light 10h 05m
Length of Day
9h 00m
Waxing Gibbous, 78% of the Moon is Illuminated
Dec 16
Waxing Gibbous
Dec 21
Full
Dec 27
Last Quarter
Jan 4
New
Jan 12
First Quarter

Weather History Calendar

Precipitation Actual month total 3.05 Average Month Total: 4.19
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Rain
Actual:
50 | 45 0.69
Average:
42 | 27 0.09
Partly Cloudy
Actual:
50 | 32 0.00
Average:
41 | 26 0.09
Snow
Actual:
40 | 28 0.00
Average:
41 | 26 0.09
Snow
Actual:
39 | 27 0.00
Average:
40 | 26 0.09
Mostly Cloudy
Actual:
32 | 25 0.00
Average:
40 | 25 0.09
Snow
Actual:
32 | 22 0.00
Average:
40 | 25 0.10
Partly Cloudy
Actual:
34 | 25 0.00
Average:
39 | 25 0.10
Scattered Clouds
Actual:
31 | 21 0.00
Average:
39 | 25 0.11
Clear
Actual:
27 | 14 0.00
Average:
39 | 25 0.11
Partly Cloudy
Actual:
25 | 8 0.00
Average:
39 | 24 0.12
Snow
Actual:
43 | 24 0.00
Average:
39 | 24 0.13
Rain
Actual:
52 | 24 1.31
Average:
39 | 24 0.13
Rain
Actual:
52 | 40 0.34
Average:
38 | 24 0.14
Snow
Actual:
37 | 19 0.00
Average:
38 | 23 0.15
Snow
Actual:
20 | 16 0.00
Average:
38 | 23 0.15
Partly Cloudy
Actual:
30 | 14 0.00
Average:
38 | 23 0.16
Scattered Clouds
Actual:
34 | 15 0.00
Average:
37 | 22 0.16
Partly Cloudy
Actual:
36 | 15 0.00
Average:
37 | 22 0.16
Mostly Cloudy
Actual:
34 | 23 0.00
Average:
37 | 22 0.16
Snow
Actual:
30 | 24 0.02
Average:
36 | 21 0.16
Snow
Actual:
42 | 26 0.01
Average:
36 | 21 0.16
Snow
Actual:
34 | 30 0.04
Average:
36 | 21 0.16
Snow
Actual:
40 | 29 0.04
Average:
35 | 20 0.16
Scattered Clouds
Actual:
37 | 22 0.00
Average:
35 | 20 0.16
Partly Cloudy
Actual:
30 | 18 0.00
Average:
35 | 20 0.16
Snow
Actual:
25 | 20 0.31
Average:
35 | 20 0.16
Snow
Actual:
30 | 16 0.29
Average:
34 | 20 0.15
Scattered Clouds
Actual:
30 | 15 0.00
Average:
34 | 19 0.15
Partly Cloudy
Actual:
36 | 19 0.00
Average:
34 | 19 0.15
Partly Cloudy
Actual:
41 | 16 0.00
Average:
34 | 19 0.15
Partly Cloudy
Actual:
50 | 26 0.00
Average:
33 | 19 0.14
 

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

2010 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 50 48 45 50 45 42 100 88 72 30.33 29.95 29.65 10 6 2 28 16 41 0.69 Rain
2 50 42 32 50 32 24 100 71 47 30.02 29.88 29.65 10 10 10 18 10 24 0.00  
3 40 34 28 27 24 22 86 64 48 29.98 29.87 29.74 10 10 10 12 5 - 0.00 Snow
4 39 34 27 25 22 18 69 61 49 29.72 29.63 29.55 10 10 10 16 9 - 0.00 Snow
5 32 30 25 18 17 13 67 60 51 29.55 29.53 29.47 10 10 10 16 9 21 0.00  
6 32 27 22 17 15 13 69 59 50 29.45 29.25 29.14 10 10 10 23 13 31 0.00 Snow
7 34 30 25 13 12 11 59 50 40 29.53 29.36 29.23 10 10 10 17 11 24 0.00  
8 31 26 21 12 8 4 61 49 37 29.94 29.73 29.53 10 10 10 16 12 24 0.00  
9 27 21 14 8 4 1 66 51 36 30.35 30.13 29.95 10 10 10 16 11 23 0.00  
10 25 16 8 14 7 2 75 60 44 30.45 30.39 30.30 10 10 10 7 4 - 0.00  
11 43 34 24 25 18 7 85 61 46 30.28 30.24 30.19 10 10 4 8 3 - 0.00 Snow
12 52 38 24 50 39 21 94 89 81 30.24 29.86 29.30 10 5 2 32 10 44 1.31 Rain
13 52 47 40 52 47 36 100 94 86 29.26 29.13 29.04 10 7 0 24 14 33 0.34 Fog , Rain
14 37 28 19 33 16 6 87 63 49 29.49 29.33 29.08 10 10 8 16 11 24 0.00 Snow
15 20 18 16 9 4 1 68 53 47 29.65 29.55 29.44 10 9 7 15 13 24 0.00 Snow
16 30 22 14 17 10 5 89 64 43 29.78 29.75 29.67 10 10 10 10 6 - 0.00  
17 34 24 15 17 13 11 86 67 40 30.03 29.86 29.75 10 10 10 12 5 - 0.00  
18 36 26 15 23 18 12 85 73 50 30.11 30.07 30.04 10 10 10 5 2 - 0.00  
19 34 28 23 24 21 18 90 73 55 30.09 30.01 29.88 10 10 10 7 3 - 0.00  
20 30 27 24 23 18 13 86 68 49 29.88 29.77 29.66 10 8 1 17 10 23 0.02 Snow
21 42 34 26 30 24 17 84 67 55 29.71 29.64 29.59 10 8 2 22 15 32 0.01 Snow
22 34 32 30 30 27 24 93 82 66 29.70 29.63 29.56 10 5 1 14 10 22 0.04 Snow
23 40 34 29 29 26 20 93 77 59 29.83 29.64 29.54 10 6 1 20 13 21 0.04 Snow
24 37 30 22 19 15 12 67 57 40 29.97 29.92 29.83 10 10 10 13 9 - 0.00  
25 30 24 18 15 14 11 75 66 53 30.00 29.97 29.94 10 10 10 7 4 - 0.00  
26 25 22 20 22 15 10 88 72 57 30.05 29.77 29.23 10 6 0 26 12 37 0.31 Fog , Snow
27 30 23 16 26 18 5 90 75 59 29.33 29.03 28.90 10 5 0 32 26 47 0.29 Snow
28 30 22 15 9 4 0 57 44 33 29.72 29.53 29.36 10 10 10 30 22 39 0.00  
29 36 28 19 22 18 10 86 62 49 30.06 29.89 29.73 10 10 10 21 12 28 0.00  
30 41 28 16 22 19 14 91 69 43 30.16 30.10 30.06 10 10 10 8 2 - 0.00  
31 50 38 26 32 26 19 82 63 47 30.11 30.06 30.03 10 10 10 9 6 - 0.00