Best year time to visit Groton Town

General weather information about Groton Town

Average annual temperature is 15.8 °C

Absolute maximum temperature: 35.1 °C

Absolute minimum temperature: -6.6 °C

Number of sunny days: 179 days

Number of rainy days: 185 days

Number of snow days: 1 day

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* Weather data for Groton Town United States is based on climate observations for 2026 year

Groton Town air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)20.322.122.428.326.429.535.134.333.426.923.518.5
Average daytime temperature (°C)11.612.413.520.320.925.630.629.326.521.414.612.2
Average temperature (°C)7.88.48.915.416.921.526.625.322.617.110.38.3
Average night temperature (°C)4.54.44.911.613.517.923.522.219.313.66.65.1
Absolute minimum temperature (°C)-1.9-6.6-1.53.67.412.720.217.914.88.1-2.4-0.7

Groton Town monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.014.013.011.010.09.0
Daylight mean duration (h)9.910.812.013.214.214.714.513.612.411.210.29.6
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)6.17.38.29.810.811.612.110.69.39.27.86.2
Precipitation (mm)7450451325811386571034752115
Sunny days1315181614137813212417
Rainy days18121314171724231710614
Snow days010000000000

Groton Town - weather forecast by months

Groton Town weather in januaryGroton Town weather in februaryGroton Town weather in marchGroton Town weather in aprilGroton Town weather in mayGroton Town weather in juneGroton Town weather in julyGroton Town weather in augustGroton Town weather in septemberGroton Town weather in octoberGroton Town weather in novemberGroton Town weather in december

Best time to visit Groton Town:

The best time to visit Groton Town during the most sunny months:

  • June — 11.6(h)
  • July — 12.1(h)

The largest precipitation sum in Groton Town is at

  • April — 132(mm)
  • June — 113(mm)
  • September — 103(mm)
  • December — 115(mm)

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    Frequently asked questions

    When is the best time to visit Groton Town?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Groton Town.
    What is the weather like in Groton Town?
    See average temperature, rainfall and daylight hours for Groton Town by month in the table above.
    How many sunny days does Groton Town have?
    The monthly weather statistics above show sunshine and rainfall patterns for Groton Town throughout the year.