Weather History for Groton, CT

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Month of December, 2014

  Max Avg Min Sum
Temperature  
Max Temperature 57 °F 43 °F 30 °F
Mean Temperature 50 °F 37 °F 23 °F
Min Temperature 45 °F 31 °F 16 °F
Degree Days  
Heating Degree Days (base 65) 42 28 15 874
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 55 °F 32 °F 4 °F
Precipitation  
Precipitation 1.29 in 0.08 in 0.00 in 2.52 in
Snowdepth - - - -
Wind  
Wind 32 mph 9 mph 0 mph
Gust Wind 43 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.71 in 30.08 in 29.45 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 22, 2014 Rise Set
Actual Time 7:11 AM EST 4:22 PM EST
Civil Twilight 6:39 AM EST 4:53 PM EST
Nautical Twilight 6:04 AM EST 5:28 PM EST
Astronomical Twilight 5:31 AM EST 6:02 PM EST
Moon 7:20 AM EST (12/22) 5:28 PM EST (12/22)
Length of Visible Light 10h 14m
Length of Day
9h 11m
New Moon, 1% of the Moon is Illuminated
Dec 22
New Moon
Dec 28
First Quarter
Jan 4
Full
Jan 13
Last Quarter
Jan 20
New

Weather History Calendar

Precipitation Actual month total 2.52 Average Month Total: 4.54
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Rain
Actual:
57 | 39 0.00
Average:
45 | 28 0.08
Rain
Actual:
39 | 35 0.01
Average:
47 | 29 0.18
Rain
Actual:
50 | 39 0.11
Average:
46 | 28 0.26
Clear
Actual:
44 | 28 0.00
Average:
45 | 27 0.23
Rain
Actual:
45 | 26 0.11
Average:
43 | 25 0.17
Rain
Actual:
51 | 39 0.43
Average:
46 | 28 0.21
Rain
Actual:
39 | 23 0.03
Average:
45 | 27 0.08
Mostly Cloudy
Actual:
32 | 19 0.00
Average:
43 | 27 0.15
Rain
Actual:
46 | 33 1.29
Average:
46 | 26 0.16
Rain
Actual:
39 | 33 0.00
Average:
44 | 27 0.05
Snow
Actual:
36 | 30 0.00
Average:
43 | 27 0.20
Partly Cloudy
Actual:
36 | 26 0.00
Average:
43 | 26 0.11
Scattered Clouds
Actual:
41 | 30 0.00
Average:
44 | 27 0.10
Clear
Actual:
46 | 26 0.00
Average:
42 | 26 0.22
Scattered Clouds
Actual:
42 | 25 0.00
Average:
42 | 25 0.19
Rain
Actual:
45 | 26 0.01
Average:
44 | 27 0.13
Rain
Actual:
51 | 37 0.15
Average:
42 | 24 0.24
Partly Cloudy
Actual:
39 | 33 0.00
Average:
39 | 22 0.06
Mostly Cloudy
Actual:
37 | 30 0.00
Average:
38 | 22 0.04
Mostly Cloudy
Actual:
34 | 25 0.00
Average:
39 | 23 0.09
Snow
Actual:
37 | 32 0.00
Average:
40 | 24 0.17
Overcast
Actual:
46 | 34 0.00
Average:
40 | 24 0.19
Rain
Actual:
48 | 42 0.02
Average:
40 | 24 0.15
Rain
Actual:
55 | 45 0.31
Average:
38 | 21 0.11
Rain
Actual:
54 | 42 0.04
Average:
39 | 19 0.14
Clear
Actual:
48 | 28 0.00
Average:
38 | 21 0.22
Clear
Actual:
48 | 27 0.00
Average:
34 | 19 0.03
Rain
Actual:
46 | 34 0.01
Average:
39 | 22 0.18
Clear
Actual:
41 | 30 0.00
Average:
40 | 23 0.14
Clear
Actual:
30 | 21 0.00
Average:
39 | 22 0.14
Partly Cloudy
Actual:
30 | 16 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

2014 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 57 48 39 48 43 30 93 78 56 30.43 30.16 30.06 9 7 4 20 6 26 0.00 Rain
2 39 37 35 39 30 21 100 78 55 30.66 30.51 30.33 10 6 2 17 11 24 0.01 Rain
3 50 44 39 50 43 33 100 96 73 30.30 30.10 29.95 8 4 2 20 10 29 0.11 Rain
4 44 36 28 30 24 19 88 61 42 30.53 30.36 30.16 10 8 6 12 8 - 0.00  
5 45 36 26 45 33 17 100 78 52 30.64 30.51 30.36 10 6 2 20 11 29 0.11 Rain
6 51 45 39 51 45 39 100 98 93 30.35 30.20 30.11 8 4 1 17 10 28 0.43 Rain
7 39 32 23 38 22 4 100 64 32 30.63 30.38 30.17 10 8 4 23 17 33 0.03 Rain
8 32 24 19 29 18 4 88 71 46 30.71 30.60 30.40 10 8 6 16 13 22 0.00  
9 46 40 33 45 40 30 100 98 89 30.40 29.75 29.47 9 3 1 32 18 43 1.29 Rain
10 39 36 33 40 38 32 100 99 93 29.56 29.50 29.45 8 3 1 12 9 21 0.00 Rain
11 36 33 30 34 28 23 100 84 72 29.84 29.66 29.51 10 6 2 16 10 23 0.00 Snow
12 36 31 26 25 24 22 88 76 64 29.93 29.90 29.84 10 8 7 15 8 20 0.00  
13 41 36 30 26 25 24 80 70 53 29.92 29.87 29.82 10 8 7 17 11 24 0.00  
14 46 36 26 31 29 25 100 79 56 29.94 29.85 29.81 10 8 5 13 6 - 0.00  
15 42 34 25 33 29 24 100 89 65 30.14 30.05 29.93 10 8 2 12 2 20 0.00  
16 45 36 26 44 38 26 100 92 79 30.14 30.01 29.88 10 5 2 8 5 - 0.01 Rain
17 51 45 37 43 41 32 100 91 68 29.87 29.78 29.73 10 5 2 16 9 - 0.15 Rain
18 39 36 33 33 29 26 86 71 60 29.92 29.86 29.80 10 8 7 17 11 33 0.00  
19 37 34 30 28 23 22 79 65 55 30.15 30.00 29.91 10 8 7 17 9 23 0.00  
20 34 30 25 29 24 20 85 76 69 30.27 30.25 30.17 8 7 6 9 7 - 0.00  
21 37 34 32 35 32 29 100 93 85 30.33 30.27 30.24 8 6 2 10 8 - 0.00 Rain , Snow
22 46 40 34 40 36 32 92 83 71 30.34 30.29 30.23 10 8 6 17 10 23 0.00  
23 48 45 42 47 44 40 100 95 85 30.24 30.15 30.08 9 6 2 14 11 23 0.02 Rain
24 55 50 45 55 50 45 100 100 96 30.08 29.79 29.57 9 3 0 17 10 23 0.31 Fog , Rain
25 54 48 42 54 46 28 100 86 43 30.04 29.65 29.52 10 4 0 18 11 29 0.04 Fog , Rain
26 48 39 28 37 31 29 100 70 48 30.22 30.16 30.06 10 8 5 14 7 - 0.00  
27 48 38 27 39 33 26 100 86 66 30.25 30.18 30.07 8 6 3 13 2 - 0.00  
28 46 40 34 45 40 28 96 85 65 30.03 29.91 29.82 8 6 3 16 8 20 0.01 Rain
29 41 36 30 28 22 16 82 59 45 30.24 30.15 30.04 10 8 7 15 9 - 0.00  
30 30 26 21 15 10 5 62 50 40 30.38 30.34 30.25 10 8 7 17 10 - 0.00  
31 30 23 16 14 9 4 81 53 33 30.35 30.27 30.15 10 8 4 16 5 20 0.00