It hardly ever freezes in Mill Valley
Mill Valley has warm winters and cool summers. A typical July afternoon reaches 72°, a January night drops to 43°, and snow is almost unheard of. A typical November afternoon reaches 62°, and nights fall to 47°.
Getting the latest forecast from the National Weather Service…
What stands out about Mill Valley’s weather
Read from 30 years of NOAA records. Each one opens the full story on the Climate page.
Where today sits in Mill Valley’s year
Typical highs and lows month by month, from 30 years of NOAA records.
Weather talk
Road reports, first frosts and storm memories from neighbors in Mill Valley.
Your answer becomes a post in Town Square.
Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Mill Valley itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Muir Woods, CA (2 mi, snow) and Richmond, CA (9 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.