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Weather in Mill Valley, United States 🇺🇸

Current Weather in Mill Valley

Coastal Flood Advisory issued September 3 at 11:21PM PDT until September 4 at 9:00PM PDT by NWS San Francisco CA
Sunny
13°C
Feels like 13°C. Sunny.
🌬️ 6 km/h WNW
💧 88% Humidity
🧭 1014 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 0.4
🌡️ Dew Point: 12°C
🌅 Sunrise: 06:42 AM
🌇 Sunset: 07:35 PM
Map Overlays:

In Mill Valley right now it is 13°C and sunny, feeling like 13°C. Humidity sits at 88% and winds are near 6 km/h, and the UV index is 0 (low). Looking ahead, Mill Valley should sit between roughly 11°C and 25°C over the coming days. ⚠️ Coastal Flood Advisory issued September 3 at 11:21PM PDT until September 4 at 9:00PM PDT by NWS San Francisco CA

Hourly Forecast for Mill Valley

09:00
Sunny
16°
8%
10:00
Sunny
18°
4%
11:00
Sunny
21°
2%
12:00
Sunny
21°
1%
13:00
Sunny
25°
1%
14:00
Sunny
20°
2%
15:00
Sunny
20°
2%
16:00
Sunny
20°
2%
17:00
Sunny
20°
2%
18:00
Sunny
19°
2%
19:00
Sunny
17°
4%
20:00
Clear
15°
8%
21:00
Clear
14°
11%
22:00
Clear
14°
13%
23:00
Clear
14°
12%
00:00
Clear
14°
12%
01:00
Clear
14°
12%
02:00
Clear
14°
11%
03:00
Clear
14°
10%
04:00
Clear
13°
10%
05:00
Clear
13°
9%
06:00
Clear
13°
9%
07:00
Sunny
13°
8%
08:00
Sunny
14°
6%

14-Day Forecast for Mill Valley

Fri, Sep 04
Sunny Sunny
25° / 11°
Sat, Sep 05
Sunny Sunny
21° / 13°
Sun, Sep 06
Sunny Sunny
20° / 13°
Mon, Sep 07
Sunny Sunny
21° / 13°
Tue, Sep 08
Overcast Overcast
20° / 13°
Wed, Sep 09
Overcast Overcast
20° / 13°
Thu, Sep 10
Overcast Overcast
25° / 19°
Fri, Sep 11
Sunny Sunny
20° / 16°
Sat, Sep 12
Sunny Sunny
21° / 15°
Sun, Sep 13
Sunny Sunny
23° / 16°
Mon, Sep 14
Sunny Sunny
25° / 16°
Tue, Sep 15
Sunny Sunny
25° / 16°
Wed, Sep 16
Sunny Sunny
21° / 15°
Thu, Sep 17
Sunny Sunny
23° / 14°

Additional Forecasts for Mill Valley

Air Quality

💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 143.0 μg/m³
O₃ (Ozone) 38.0 μg/m³
NO₂ (Nitrogen Dioxide) 10.7 μg/m³
SO₂ (Sulphur Dioxide) 0.8 μg/m³
PM2.5 (Fine particles) 12.4 μg/m³
PM10 (Coarse particles) 16.2 μg/m³

Historical Weather

Weather Forecasts for Other Cities in United States

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Best Time to Be Outside in Mill Valley Today

The most comfortable window in Mill Valley today looks like 16:00 to 19:00, when it is around 20°C. It should stay dry through that window. No significant rain is expected in the next several hours.

Frequently Asked Questions about Weather in Mill Valley

What is the temperature in Mill Valley right now?

The current temperature in Mill Valley is 13°C (56°F), sunny (feels like 13°C).

What's the weather like in Mill Valley right now?

Current weather in Mill Valley: Sunny, humidity 88%, wind 6 km/h WNW.

What is today's forecast for Mill Valley?

Today in Mill Valley: high 25°C, low 11°C, sunny. Chance of rain: 6%.

What is the 7-day weather forecast for Mill Valley?

Daily highs and lows for Mill Valley:

  • 2026-09-04: 25°C / 11°C
  • 2026-09-05: 21°C / 13°C
  • 2026-09-06: 20°C / 13°C
  • 2026-09-07: 21°C / 13°C
  • 2026-09-08: 20°C / 13°C
  • 2026-09-09: 20°C / 13°C
  • 2026-09-10: 25°C / 19°C
Is it going to rain in Mill Valley today?

There is a 6% chance of rain in Mill Valley today.

What is the wind speed in Mill Valley right now?

Wind in Mill Valley is currently 6 km/h (4 mph) from the WNW.

What is the UV index in Mill Valley right now?

The UV index in Mill Valley is currently 0.4 (low). Sun protection is recommended when the index is 3 or higher.

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