Mill Valley, CA Weather Forecast
Local 7-day forecast
Patchy Fog then Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Mill Valley, CA in one place.
Patchy fog between 7am and 8am. Sunny, with a high near 85. West southwest wind 1 to 9 mph, with gusts as high as 18 mph.
Local Weather Overview
This forecast page for Mill Valley, CA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 27, 2026 6:29 PM PDT.
The active forecast window currently covers Aug 29 to Sep 2, 2026 for Mill Valley, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 2, 2026
- Latest sync
- Aug 27, 2026 6:29 PM PDT
- Forecast office
- MTR
- Source
- NOAA / NWS
Daily Outlook
This Week in Mill Valley
Saturday looks like the warmest upcoming period in Mill Valley at 85 degrees F.
Monday Night is the coolest period ahead with temperatures near 50 degrees F.
The strongest winds are forecast for Monday at about 2 to 10 mph SSW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Aug 27, 2026 6:29 PM PDT
- Coverage
- 6 days
- Time zone
- America/Los_Angeles
- Forecast office
- MTR
- Radar station
- KDAX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Patchy fog after 5am. Mostly clear, with a low around 51.
Patchy fog before 9am. Sunny, with a high near 85.
Mostly clear, with a low around 51.
Sunny, with a high near 79.
Partly cloudy, with a low around 50.
Mostly sunny, with a high near 79.
Patchy fog after 2am. Partly cloudy, with a low around 50.
Patchy fog before 8am. Mostly sunny, with a high near 82.
A slight chance of rain showers between 11pm and 5am. Partly cloudy, with a low around 52.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Patchy Fog then Sunny
|
85°F |
1 to 9 mph
WSW
|
|
Saturday Night
Aug 29
|
Mostly Clear then Patchy Fog
|
51°F |
1 to 9 mph
WSW
|
|
Sunday
Aug 30
|
Patchy Fog then Sunny
|
85°F |
1 to 8 mph
SSW
|
|
Sunday Night
Aug 30
|
Mostly Clear
|
51°F |
2 to 8 mph
SSW
|
|
Monday
Aug 31
|
Sunny
|
79°F |
2 to 10 mph
SSW
|
|
Monday Night
Aug 31
|
Partly Cloudy
|
50°F |
3 to 10 mph
WSW
|
|
Tuesday
Sep 1
|
Mostly Sunny
|
79°F |
3 to 10 mph
WSW
|
|
Tuesday Night
Sep 1
|
Partly Cloudy then Patchy Fog
|
50°F |
2 to 10 mph
W
|
|
Wednesday
Sep 2
|
Patchy Fog then Mostly Sunny
|
82°F |
2 to 9 mph
WSW
|
|
Wednesday Night
Sep 2
|
Slight Chance Rain Showers
|
52°F |
2 to 9 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Mill Valley.
