Mill Valley Weather in March

March in Mill Valley brings moderate temperatures around 18°C (64°F) during the day, dropping to 7°C (45°F) at night, with quite a bit of rainfall expected, averaging around 125 mm (4.9 in) for the month.

Rainfall in Mill Valley in March

Climate statistics over the past 30 years suggest around 12 days of rain, with 125 mm (4.9 in) average for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Mill Valley in March

March in Mill Valley brings moderate temperatures, with highs of 18°C (64°F) and nights around 7°C (45°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights fall to 7°C (45°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Mill Valley in March

Enjoy a sunny month with about 270 hours of sunshine, the clear skies make Mill Valley even more beautiful.

Should you favor a climate that's both dry and comfortably warm, May, June, July, August, September and October typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.