Mill Valley Weather in January
January in Mill Valley brings moderate temperatures, with daytime highs of 14°C (57°F) and nights around 6°C (43°F). Quite a bit of rainfall is expected, around 122 mm (4.8 in), so pack an umbrella.
Rainfall in Mill Valley in January
Analyzing past climate data, one can expect approximately 9 days of rain, averaging 122 mm (4.8 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Mill Valley in January
Temperatures in Mill Valley in January top out at 14°C (57°F) and drop to 6°C (43°F) overnight. The difference between afternoon and evening temperatures is usually noticeable. With lows around 6°C (43°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Mill Valley in January
The area enjoys a moderate level of sunlight, with around 186 hours. It's a good balance between sunny and cloudy days.If you prefer dry days with pleasant temperatures, January may not be the ideal month to visit Mill Valley. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
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 January
Min Temperature
6°C (43°F)
Max Temperature
14°C (57°F)
Chance of Rain
30%
Precipitation
122 mm (4.8 in)
Rainy days
9 days
Humidity
80% *
Sunshine
186 hours *
Percentage Sunshine
61% *
Best Places in the United States of America in January
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in January →
perfect weather
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What to Wear in Mill Valley in January
The weather can be unpredictable in January, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Mill Valley in January
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
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.
Temperature Rainfall Sunshine Humidity
See the full Mill Valley climate overview or explore weather in the United States of America.
