Best year time to visit Mill Valley

General weather information about Mill Valley

Average annual temperature is 13.6 °C

Absolute maximum temperature: 34.9 °C

Absolute minimum temperature: 1.9 °C

Number of sunny days: 260 days

Number of rainy days: 105 days

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

Mill Valley air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)16.217.617.124.626.424.334.134.929.033.825.018.4
Average daytime temperature (°C)13.413.012.917.518.319.625.726.222.323.918.115.1
Average temperature (°C)9.78.49.312.013.514.817.518.517.017.113.411.4
Average night temperature (°C)6.94.96.57.810.411.612.414.013.512.79.98.8
Absolute minimum temperature (°C)1.92.52.94.67.28.911.011.910.26.56.75.0

Mill Valley 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)9.910.812.013.214.214.714.513.612.411.210.19.6
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)6.07.77.711.411.612.712.811.510.79.37.85.6
Precipitation (mm)3138627710440002969194
Sunny days13169282327312826232016
Rainy days18122228303481015
Snow days000000000000

Mill Valley - weather forecast by months

Mill Valley weather in januaryMill Valley weather in februaryMill Valley weather in marchMill Valley weather in aprilMill Valley weather in mayMill Valley weather in juneMill Valley weather in julyMill Valley weather in augustMill Valley weather in septemberMill Valley weather in octoberMill Valley weather in novemberMill Valley weather in december

Best time to visit Mill Valley:

The best time to visit Mill Valley during the most sunny months:

  • June — 12.7(h)
  • July — 12.8(h)

The largest precipitation sum in Mill Valley is at

  • January — 313(mm)
  • March — 277(mm)
  • December — 194(mm)

    • Weather forecast in the closest to Mill Valley admin centers

    Weather forecast in the closest towns to Mill Valley

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    Frequently asked questions

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