Best year time to visit Cos Cob

General weather information about Cos Cob

Average annual temperature is 12.6 °C

Absolute maximum temperature: 34.3 °C

Absolute minimum temperature: -17.8 °C

Number of sunny days: 163 days

Number of rainy days: 197 days

Number of snow days: 5 days

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* Weather data for Cos Cob United States is based on climate observations for 2026 year

Cos Cob air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)17.719.015.230.228.330.633.030.534.326.919.116.5
Average daytime temperature (°C)7.97.59.617.420.724.829.127.023.819.010.89.0
Average temperature (°C)4.33.04.912.015.219.524.122.319.414.46.15.0
Average night temperature (°C)1.4-0.91.07.610.015.220.018.315.910.72.21.8
Absolute minimum temperature (°C)-3.9-17.8-2.90.45.09.416.014.810.05.1-4.0-5.6

Cos Cob 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)4.86.47.58.612.110.611.410.27.67.47.15.1
Precipitation (mm)14352126142488217513724911259203
Sunny days14151212191071013151917
Rainy days171116181220242117161114
Snow days023000000000

Cos Cob - weather forecast by months

Cos Cob weather in januaryCos Cob weather in februaryCos Cob weather in marchCos Cob weather in aprilCos Cob weather in mayCos Cob weather in juneCos Cob weather in julyCos Cob weather in augustCos Cob weather in septemberCos Cob weather in octoberCos Cob weather in novemberCos Cob weather in december

Best time to visit Cos Cob:

The best time to visit Cos Cob during the most sunny months:

  • May — 12.1(h)
  • June — 10.6(h)
  • July — 11.4(h)

The largest precipitation sum in Cos Cob is at

  • July — 175(mm)
  • September — 249(mm)
  • December — 203(mm)

    • Weather forecast in the closest to Cos Cob admin centers

    Weather forecast in the closest towns to Cos Cob

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    Frequently asked questions

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