Best year time to visit Marietta

General weather information about Marietta

Average annual temperature is 20.6 °C

Absolute maximum temperature: 39.9 °C

Absolute minimum temperature: -0.5 °C

Number of sunny days: 165 days

Number of rainy days: 200 days

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

Marietta air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)25.627.427.830.535.138.238.639.935.331.227.023.1
Average daytime temperature (°C)19.121.923.226.329.732.734.936.932.226.620.416.9
Average temperature (°C)13.516.217.320.023.026.228.229.825.820.314.811.9
Average night temperature (°C)9.212.212.714.917.621.123.524.720.915.310.47.8
Absolute minimum temperature (°C)-0.51.0-0.58.510.819.121.120.117.08.61.00.7

Marietta monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.013.012.011.010.010.0
Daylight mean duration (h)10.411.112.012.913.714.113.913.312.411.410.610.2
Daylight minimum duration (h)10.010.011.012.013.014.013.012.011.010.010.010.0
Sunshine mean duration (h)7.27.68.69.310.611.111.511.310.68.96.76.8
Precipitation (mm)131501501101411571356199739864
Sunny days151114139691114231822
Rainy days1617171722242220168129
Snow days000000000000

Marietta - weather forecast by months

Marietta weather in januaryMarietta weather in februaryMarietta weather in marchMarietta weather in aprilMarietta weather in mayMarietta weather in juneMarietta weather in julyMarietta weather in augustMarietta weather in septemberMarietta weather in octoberMarietta weather in novemberMarietta weather in december

Best time to visit Marietta:

The largest precipitation sum in Marietta is at

  • March — 150(mm)
  • May — 141(mm)
  • June — 157(mm)
  • July — 135(mm)

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    Frequently asked questions

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