Average data for 10 years
1 December
Sunday
+8°
+5°
2 December
Monday
+9°
+7°
3 December
Tuesday
+8°
+6°
4 December
Wednesday
+9°
+5°
5 December
Thursday
+8°
+7°
6 December
Friday
+5°
+4°
7 December
Saturday
+3°
+3°
8 December
Sunday
+5°
+2°
9 December
Monday
+5°
+3°
10 December
Tuesday
+5°
+3°
11 December
Wednesday
+5°
+3°
12 December
Thursday
+6°
+3°
13 December
Friday
+3°
+1°
14 December
Saturday
+6°
+2°
15 December
Sunday
+4°
+3°
16 December
Monday
+2°
+1°
17 December
Tuesday
+3°
0°
18 December
Wednesday
+6°
+2°
19 December
Thursday
+2°
+2°
20 December
Friday
+4°
0°
21 December
Saturday
+7°
+4°
22 December
Sunday
+5°
+3°
23 December
Monday
+5°
+2°
24 December
Tuesday
+5°
+3°
25 December
Wednesday
+4°
+4°
26 December
Thursday
+5°
+2°
27 December
Friday
+5°
+3°
28 December
Saturday
+3°
0°
29 December
Sunday
+2°
−1°
30 December
Monday
+4°
0°
31 December
Tuesday
+4°
0°
Cities with similar weather in December
Bulgaria
Burgas
Bulgaria
Varna
Kazakhstan
Aktau
Ireland
Dublin
Denmark
Copenhagen
In December, the weather in Groton is typically cold. Average daily high temperature in December is about 5 degrees above zero. On average, Groton has 13 partly cloudy, 10 sunny, and 8 rainy days in December. The rains are usually heavy. December as well as January, February, and March is considered the most uncomfortable time to visit Groton.