World Resorts USA Groton Weather

Groton weather in August

Weather in Groton: August

Average day temperature: 78.5°F
Average night temperature: 67.1°F
Sea water temperature: 70.7°F
Number of sunny days: 10 days
Day length: 13.1 - 14.4 hours
Number of rainy days: 3 days
Precipitation totals: 1.3 in.

Air temperature in August, °F

Show year:
2024
2023
2022

The highest day temperature during August of 2024 was 82°F. At the same time the lowest night temperature was 55°F. Day and night temperature averages during August were 75.2°F and 65.7°F.

Sea water temperature in Groton in August, °F

Show year:
2024
2023
2022

The average sea water temperature in August of 2024 was 69.9°F. The highest and lowest sea temperatures during the month were 72.9°F and 67.3°F.

Sunny, partly cloudy and cloudy days

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

Precipitation total in August, in.

Precipitation total value in Groton in August is 1.3 in. Other months of the year show relatively similar values.

Wind speed in August, mph

The average wind speed value in August is 6.9 mph It makes August one of the least windy months of the year.

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 August is: 8.0.

Best time for vacation in Groton

Sunniest months:
November 16 days
September 14 days
October 13 days
Warmest months:
July 79.9 °F
August 78.5 °F
June 73.3 °F
Warmest sea temp:
August 70.6 °F
July 68.9 °F
September 68.8 °F
Coldest months:
January 37.3 °F
February 38.3 °F
December 42.2 °F
Rainiest months:
November 4 days
July 4 days
June 3 days
Windiest months:
March 9.7 mph
January 9.4 mph
April 9.3 mph

Groton on a weather map

Groton
+48°F
SW 17 mph
Feels like: +43°F
Precip.: 0%
Places in USA:
Name
°F
+48°F
+52°F
+75°F
+75°F
+59°F
+72°F
+82°F
+70°F
+48°F
+63°F
+57°F
+73°F
+72°F
+72°F
+36°F
24 Hours Forecast
Groton
Local time: 15:20
November 21, thursday
1800
48°F
SW
17 mph
2100
48°F
W
20 mph
November 22, friday
0000
48°F
W
21 mph
0300
46°F
NE
24 mph
0600
45°F
NE
23 mph
0900
45°F
NE
22 mph
1200
46°F
N
17 mph
1500
48°F
N
14 mph
Units of measurement: °C / °F