Measurements:
°C
°F
Stonington
76°F
NE 9 mph
Feels like: 78°F
Precip: 0%
World Resorts USA Stonington Weather May Weather in Stonington

Stonington Weather: May

Average Day Temperature: 65.2°F
Average Night Temperature: 52.0°F
Sea Water Temperature: 51.8°F
Number of Sunny Days: 10 days
Sunshine Hours: 14.0 - 15.0 hours
Number of Rainy Days: 2 days
Precipitation Totals: 1.1 in

Air Temperature in May, °F

Select Year: 2026 2025 2024

The highest day temperature in May 2026 was 84°F. The lowest night temperature was 41°F. The average values for day and night temperatures during May were 66.1°F и 52.4°F respectivly.

Stonington Water Sea Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Stonington was 50.9°F. The maximum and minimum values were 46.0°F and 56.2°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Stonington is 1.1 in.

Wind Speed in May, mph

The average wind speed in May is 8.5 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 Stonington in May is 7.6 hours.

Best Time to Visit Stonington
The most sunny months:
November 16 days
October 14 days
December 14 days
The most warm months:
July 82.8 °F
August 81.2 °F
June 75.9 °F
Warmest sea temperature:
August 72.2 °F
July 70.7 °F
September 70.2 °F
The most cold months:
January 34.7 °F
February 35.9 °F
December 40.1 °F
The most rainy months:
October 4 days
November 3 days
July 3 days
The most windy months:
January 10 mph
December 10 mph
March 10 mph

Stonington on the Weather Map

USA Resorts:
NAME
Boston +90
Chicago +76
Hawaii +78
Honolulu +78
Houston +86
Las Vegas +92
Los Angeles +70
Maui +70
Miami +82
Miami Beach +84
New York +94
San Diego +64
San Francisco +60
Sarasota +94
Tampa +92
24 Hours Weather Forecast
Stonington
Local time: 13:01
04 jun, thursday
1500 72°F
N
14 mph
1800 68°F
NE
13 mph
2100 62°F
NE
9 mph
05 jun, friday
0000 60°F
E
7 mph
0300 58°F
E
6 mph
0600 60°F
E
6 mph
0900 70°F
E
8 mph
1200 74°F
E
9 mph