Mill Valley Weather in August

Mill Valley in August averages 23°C (73°F) during the day and 12°C (54°F) at night. This is the driest month of the year.

Rainfall in Mill Valley in August

Clear skies and little rain are the norm this month. A great time to spend time outdoors. Climate statistics over the past 30 years suggest around 0 days of rain, with 0.3 mm (0.01 in) average for the month. If rain does fall, it tends to be very light and barely worth getting out an umbrella for.

Temperature in Mill Valley in August

August in Mill Valley is generally perfect, with days reaching 23°C (73°F) and nights settling around 12°C (54°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Mill Valley in August

Enjoy a sunny month with about 288 hours of sunshine, the clear skies make Mill Valley even more beautiful.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August, September and October typically offer the best weather for Mill Valley.

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• January
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For a detailed overview over the year and the best time to visit the United States of America, check out our Mill Valley's climate page.

Mill Valley Temperature in August

Min Temperature 12°C (54°F)  

Max Temperature 23°C (73°F)  

Chance of Rain 1%  

Precipitation 0.3 mm (0.01 in)  

Rainy days 0 days  

Humidity 75% *  

Sunshine 288 hours *  

Percentage Sunshine 68% *  

* Data from: San Francisco, the United States of America (35 KM, 21 Miles).

What to Wear in Mill Valley in August

Comfortable temperatures call for an easy wardrobe in August. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Mill Valley in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

10/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Mill Valley's climate page.

More climate data for Mill Valley

Temperature Rainfall Sunshine Humidity

See the full Mill Valley climate overview or explore weather in the United States of America.