World Resorts USA Groton Weather

Groton 7 Days Forecast

09.01
fri
Day
45°F
N 10 mph
Precip.
0%
Night
45°F
NE 12 mph
Precip.
100%
10.01
sat
Day
41°F
W 7 mph
Precip.
0%
Night
39°F
W 11 mph
Precip.
100%
11.01
sun
Day
37°F
E 1 mph
Precip.
0%
Night
34°F
E 20 mph
Precip.
0%
12.01
mon
Day
34°F
SE 17 mph
Precip.
0%
Night
34°F
NE 12 mph
Precip.
0%
13.01
tue
Day
39°F
NE 13 mph
Precip.
0%
Night
37°F
N 11 mph
Precip.
0%
14.01
wed
Day
41°F
NE 14 mph
Precip.
100%
Night
37°F
NE 12 mph
Precip.
0%
15.01
thu
Day
34°F
SE 6 mph
Precip.
0%
Night
27°F
S 13 mph
Precip.
100%

Sea water temperature in January, °F

Show year:
2025
2024
2023

The average sea water temperature in January of 2025 was 41.1°F. The highest and lowest sea temperatures during the month were 44.6°F and 38.3°F.

Air temperature in Groton, °F

Precipitation total in Groton, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Groton

Sunniest months:
November 17 days
October 14 days
December 13 days
Warmest months:
July 79.9 °F
August 78.2 °F
June 73.5 °F
Warmest sea temp:
August 70.6 °F
July 69.1 °F
September 68.8 °F
Coldest months:
January 36.7 °F
February 38.0 °F
December 40.9 °F
Rainiest months:
July 3 days
November 3 days
January 3 days
Windiest months:
December 10.2 mph
January 10.1 mph
March 10.0 mph

Groton on a weather map

Current weather
20:52
Groton
+45°F
NE 13 mph
Feels like: +37°F
Precip.: 100%
Places in USA:
Name
°F
Washington
+54°F
Hawaii
+75°F
Honolulu
+75°F
Las Vegas
+46°F
Los Angeles
+55°F
Miami
+73°F
Miami Beach
+73°F
Maui
+72°F
New York
+48°F
San Diego
+64°F
San Francisco
+54°F
Sarasota
+70°F
Tampa
+73°F
Houston
+73°F
Chicago
+37°F
all places
24 Hours Forecast
Groton
Local time: 20:52
January 09, friday
2100
45°F
NE
13 mph
January 10, saturday
0000
45°F
NE
12 mph
0300
45°F
E
9 mph
0600
45°F
SE
7 mph
0900
43°F
S
6 mph
1200
41°F
W
7 mph
1500
41°F
W
10 mph
1800
39°F
W
19 mph
Units of measurement: °C / °F