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Stonington weather in May

Weather in Stonington: May

Average day temperature: 63.5°F
Average night temperature: 51.8°F
Sea water temperature: 51.7°F
Number of sunny days: 10 days
Day length: 14.0 - 15.0 hours
Number of rainy days: 3 days
Precipitation totals: 1.2 in.

Air temperature in May, °F

Show year:
2025
2024
2023

The highest day temperature during May of 2025 was 72°F. At the same time the lowest night temperature was 43°F. Daily and nightly averages during May were 63.3°F and 53.2°F.

Sea water temperature in Stonington in May, °F

Show year:
2025
2024
2023

The average sea water temperature in May of 2025 was 52.3°F. The highest and lowest sea temperatures during the month were 56.1°F and 47.5°F.

Sunny, partly cloudy and cloudy days

Number of sunny, partly cloudy and cloudy days in May is almost equal.

Precipitation total in May, in.

Precipitation total value in Stonington in May is 1.2 in. Other months of the year show relatively similar values.

Wind speed in May, mph

The average wind speed value in May is 8.2 mph

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 7.3.

Best time for vacation in Stonington

Sunniest months:
November 16 days
October 14 days
September 14 days
Warmest months:
July 79.5 °F
August 78.1 °F
June 73.3 °F
Warmest sea temp:
August 70.0 °F
July 68.7 °F
September 68.2 °F
Coldest months:
January 36.8 °F
February 38.0 °F
December 41.8 °F
Rainiest months:
October 4 days
November 3 days
July 3 days
Windiest months:
January 10.1 mph
March 9.8 mph
February 9.7 mph

Stonington on a weather map

Stonington
+21°F
SE 17 mph
Feels like: +9°F
Precip.: 0%
Places in USA:
Name
°F
+30°F
+77°F
+77°F
+45°F
+55°F
+70°F
+77°F
+70°F
+25°F
+57°F
+48°F
+63°F
+63°F
+46°F
+5°F
24 Hours Forecast
Stonington
Local time: 23:55
December 05, friday
0000
21°F
SE
17 mph
0300
16°F
S
10 mph
0600
14°F
S
6 mph
0900
19°F
S
3 mph
1200
27°F
N
6 mph
1500
28°F
NE
7 mph
1800
30°F
NE
4 mph
2100
32°F
NE
3 mph
Units of measurement: °C / °F