Best year time to visit Old Lyme

General weather information about Old Lyme

Average annual temperature is 12.1 °C

Absolute maximum temperature: 31.0 °C

Absolute minimum temperature: -20.1 °C

Number of sunny days: 170 days

Number of rainy days: 191 days

Number of snow days: 4 days

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* Weather data for Old Lyme United States is based on climate observations for 2026 year

Old Lyme air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)13.917.712.523.824.724.729.727.831.024.017.316.0
Average daytime temperature (°C)7.36.58.314.018.521.826.725.122.718.210.68.5
Average temperature (°C)4.32.64.610.414.217.923.221.719.114.56.55.4
Average night temperature (°C)1.5-1.21.06.89.814.220.118.416.011.52.92.6
Absolute minimum temperature (°C)-3.2-20.1-3.0-0.44.78.116.014.410.06.3-2.9-5.5

Old Lyme monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.610.611.913.314.515.114.813.812.511.19.99.3
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)4.26.67.58.712.311.011.410.17.78.17.25.6
Precipitation (mm)1594910610681661541592356848196
Sunny days914141722791113132219
Rainy days2012171392322201718812
Snow days220000000000

Old Lyme - weather forecast by months

Old Lyme weather in januaryOld Lyme weather in februaryOld Lyme weather in marchOld Lyme weather in aprilOld Lyme weather in mayOld Lyme weather in juneOld Lyme weather in julyOld Lyme weather in augustOld Lyme weather in septemberOld Lyme weather in octoberOld Lyme weather in novemberOld Lyme weather in december

Best time to visit Old Lyme:

The best time to visit Old Lyme during the most sunny months:

  • May — 12.3(h)
  • June — 11.0(h)
  • July — 11.4(h)

The largest precipitation sum in Old Lyme is at

  • January — 159(mm)
  • July — 154(mm)
  • August — 159(mm)
  • September — 235(mm)
  • December — 196(mm)

    • Weather forecast in the closest to Old Lyme admin centers

    Weather forecast in the closest towns to Old Lyme

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    Frequently asked questions

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