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 excellent, 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.