Weather History for Groton, CT

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Month of December, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 62 °F 42 °F 26 °F
Mean Temperature 56 °F 35 °F 21 °F
Min Temperature 51 °F 28 °F 15 °F
Degree Days  
Heating Degree Days (base 65) 44 30 8 927
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 6 0 0 6
Dew Point  
Dew Point 56 °F 28 °F 3 °F
Precipitation  
Precipitation 0.81 in 0.08 in 0.00 in 2.63 in
Snowdepth - - - -
Wind  
Wind 26 mph 8 mph 0 mph
Gust Wind 39 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.61 in 30.08 in 29.34 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 09, 2013 Rise Set
Actual Time 7:02 AM EST 4:18 PM EST
Civil Twilight 6:31 AM EST 4:49 PM EST
Nautical Twilight 5:56 AM EST 5:24 PM EST
Astronomical Twilight 5:23 AM EST 5:58 PM EST
Moon 11:50 AM EST (12/9) No Moon Set
Length of Visible Light 10h 18m
Length of Day
9h 16m
Waxing Crescent, 51% of the Moon is Illuminated
Dec 9
Waxing Crescent
Dec 17
Full
Dec 25
Last Quarter
Jan 1
New
Jan 7
First Quarter

Weather History Calendar

Precipitation Actual month total 2.63 Average Month Total: 4.54
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Rain
Actual:
50 | 39 0.07
Average:
45 | 28 0.08
Fog
Actual:
46 | 33 0.00
Average:
47 | 29 0.18
Fog
Actual:
53 | 33 0.00
Average:
46 | 28 0.26
Scattered Clouds
Actual:
46 | 28 0.00
Average:
45 | 27 0.23
Rain
Actual:
55 | 36 0.00
Average:
43 | 25 0.17
Rain
Actual:
57 | 39 0.29
Average:
46 | 28 0.21
Rain
Actual:
42 | 30 0.16
Average:
45 | 27 0.08
Partly Cloudy
Actual:
33 | 26 0.00
Average:
43 | 27 0.15
Rain
Actual:
42 | 28 0.08
Average:
46 | 26 0.16
Snow
Actual:
36 | 28 0.06
Average:
44 | 27 0.05
Scattered Clouds
Actual:
33 | 27 0.00
Average:
43 | 27 0.20
Scattered Clouds
Actual:
28 | 19 0.00
Average:
43 | 26 0.11
Partly Cloudy
Actual:
33 | 21 0.00
Average:
44 | 27 0.10
Snow
Actual:
36 | 17 0.03
Average:
42 | 26 0.22
Rain
Actual:
39 | 30 0.51
Average:
42 | 25 0.19
Scattered Clouds
Actual:
33 | 21 0.00
Average:
44 | 27 0.13
Snow
Actual:
26 | 16 0.06
Average:
42 | 24 0.24
Scattered Clouds
Actual:
36 | 23 0.00
Average:
39 | 22 0.06
Scattered Clouds
Actual:
45 | 30 0.00
Average:
38 | 22 0.04
Scattered Clouds
Actual:
48 | 30 0.00
Average:
39 | 23 0.09
Scattered Clouds
Actual:
53 | 45 0.00
Average:
40 | 24 0.17
Rain
Actual:
62 | 51 0.00
Average:
40 | 24 0.19
Rain
Actual:
54 | 41 0.56
Average:
40 | 24 0.15
Partly Cloudy
Actual:
39 | 28 0.00
Average:
38 | 21 0.11
Scattered Clouds
Actual:
27 | 19 0.00
Average:
39 | 19 0.14
Snow
Actual:
37 | 24 0.00
Average:
38 | 21 0.22
Scattered Clouds
Actual:
39 | 21 0.00
Average:
34 | 19 0.03
Scattered Clouds
Actual:
50 | 25 0.00
Average:
39 | 22 0.18
Rain
Actual:
48 | 34 0.81
Average:
40 | 23 0.14
Scattered Clouds
Actual:
45 | 19 0.00
Average:
39 | 22 0.14
Scattered Clouds
Actual:
28 | 15 0.00
Average:
40 | 20 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

2013 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 44 39 47 42 32 100 90 65 30.37 30.13 30.01 10 4 0 17 10 17 0.07 Fog , Rain
2 46 40 33 40 37 32 100 93 73 30.00 29.96 29.90 7 4 0 8 4 - 0.00 Fog
3 53 43 33 36 34 29 100 84 43 29.98 29.90 29.85 8 5 0 12 7 - 0.00 Fog
4 46 37 28 35 31 26 96 80 61 30.18 30.11 30.00 8 6 4 10 2 - 0.00  
5 55 46 36 55 50 34 100 93 85 30.17 30.06 29.96 7 4 0 14 6 - 0.00 Fog , Rain
6 57 48 39 56 46 37 100 92 82 30.11 29.99 29.90 10 4 0 15 7 25 0.29 Fog , Rain
7 42 36 30 36 30 19 93 76 51 30.49 30.22 30.07 10 8 3 17 9 30 0.16 Rain
8 33 30 26 23 18 15 75 60 48 30.61 30.53 30.45 10 10 4 10 7 - 0.00  
9 42 35 28 40 33 25 100 92 85 30.41 30.12 29.91 10 4 1 16 12 24 0.08 Rain
10 36 32 28 34 31 22 100 90 78 30.07 29.91 29.81 9 4 0 14 3 21 0.06 Fog , Rain , Snow
11 33 30 27 21 18 15 69 60 52 30.28 30.20 30.09 10 9 8 15 11 23 0.00  
12 28 24 19 16 9 5 68 54 43 30.31 30.23 30.12 10 10 9 16 9 23 0.00  
13 33 27 21 16 12 6 66 52 46 30.35 30.16 30.08 10 10 9 16 12 28 0.00  
14 36 26 17 34 16 7 93 78 48 30.56 30.37 29.98 10 3 0 21 12 32 0.03 Fog , Rain , Snow
15 39 34 30 37 32 21 100 87 61 29.90 29.57 29.41 10 7 2 26 16 39 0.51 Rain
16 33 27 21 22 13 8 65 53 38 30.23 30.02 29.79 10 10 9 15 11 23 0.00  
17 26 21 16 22 16 8 88 80 62 30.26 30.08 29.90 10 5 0 17 9 25 0.06 Fog , Snow
18 36 30 23 21 19 17 85 67 52 30.14 29.99 29.86 10 9 8 20 11 34 0.00  
19 45 38 30 34 27 19 82 66 53 30.16 30.10 30.01 9 8 7 20 8 28 0.00  
20 48 39 30 42 36 28 93 83 71 30.12 30.05 29.98 9 8 6 9 2 - 0.00  
21 53 49 45 51 46 44 100 89 80 30.02 29.97 29.92 7 6 5 12 5 17 0.00  
22 62 56 51 55 53 50 100 94 72 29.99 29.91 29.85 10 4 0 23 10 30 0.00 Fog , Rain
23 54 48 41 52 45 35 100 93 79 30.08 30.00 29.91 10 6 1 17 5 25 0.56 Rain
24 39 34 28 29 20 13 69 55 41 30.26 30.12 30.04 10 10 10 20 13 29 0.00  
25 27 23 19 13 6 3 62 48 36 30.54 30.45 30.28 10 10 10 22 12 29 0.00  
26 37 30 24 32 22 14 87 71 63 30.45 30.28 30.11 10 9 3 13 6 - 0.00 Rain , Snow
27 39 30 21 23 21 18 92 67 43 30.32 30.28 30.24 10 8 5 13 6 - 0.00  
28 50 38 25 37 29 21 92 69 39 30.27 30.14 30.05 10 9 7 16 6 22 0.00  
29 48 41 34 47 40 32 100 89 71 30.05 29.68 29.34 10 5 2 24 8 34 0.81 Rain
30 45 33 19 37 25 6 93 70 46 30.17 29.92 29.63 10 10 8 16 9 24 0.00  
31 28 22 15 18 11 4 70 59 43 30.23 30.14 30.06 10 10 9 13 8 - 0.00