Measurements:
°C
°F
Groton
12°F
S 10 mph
Feels like: 6°F
Precip: 0%
World Resorts USA Groton Weather April Weather in Groton

Groton Weather: April

Average Day Temperature: 54.3°F
Average Night Temperature: 43.1°F
Sea Water Temperature: 44.9°F
Number of Sunny Days: 8 days
Sunshine Hours: 12.7 - 14.0 hours
Number of Rainy Days: 3 days
Precipitation Totals: 1.3 in

Air Temperature in April, °F

Select Year: 2025 2024 2023

The highest day temperature in April 2025 was 76°F. The lowest night temperature was 27°F. The average values for day and night temperatures during April were 56.9°F и 44.5°F respectivly.

Groton Water Sea Temperature in April, °F

Select Year: 2025 2024 2023

The average sea surface temperature in April 2025 for Groton was 44.0°F. The maximum and minimum values were 41.2°F and 48.8°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in April are gloomy but you can also expect sunny days.

Precipitation Totals in April, in

Precipitation total in April for Groton is 1.3 in.

Wind Speed in April, mph

The average wind speed in April is 9.6 mph.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Groton in April is 6.3 hours.

Best Time to Visit Groton
The most sunny months:
November 17 days
October 14 days
September 13 days
The most warm months:
July 83.2 °F
August 81.4 °F
June 76.1 °F
Warmest sea temperature:
August 72.9 °F
July 71.2 °F
September 70.9 °F
The most cold months:
January 35.3 °F
February 36.7 °F
December 40.7 °F
The most rainy months:
November 3 days
July 3 days
January 3 days
The most windy months:
January 10 mph
March 10 mph
November 9 mph

Groton on the Weather Map

USA Resorts:
NAME
Chicago -2
Hawaii +78
Honolulu +78
Houston +44
Las Vegas +40
Los Angeles +52
Maui +72
Miami +72
Miami Beach +80
New York +18
San Diego +54
San Francisco +46
Sarasota +62
Tampa +62
Washington +28
24 Hours Weather Forecast
Groton
Local time: 03:06
05 dec, friday
0600 10°F
S
6 mph
0900 16°F
S
3 mph
1200 24°F
N
6 mph
1500 26°F
NE
7 mph
1800 26°F
N
4 mph
2100 28°F
N
4 mph
06 dec, saturday
0000 30°F
N
2 mph
0300 32°F
N
1 mph