Muir Beach Weather Forecast
- 57
- 62
Partly Sunny
- 57
- 60
Breezy
- 56
- 61
Breezy
- 56
- 62
Mostly Sunny
- 56
- 60
Mostly Cloudy
- 57
- 60
Partly Sunny
- 57
- 61
Partly Sunny
Today 11 Sep Coastal North Bay Including Point Reyes National Seashore
Sunny. Highs in the 60s to mid 70s. West Winds 10 to 15 Mph.
Tonight 11 Sep Coastal North Bay Including Point Reyes National Seashore
Partly cloudy late in the evening then becoming mostly clear. Lows in the mid 50s. West Winds 5 to 10 Mph.
Muir Beach Temperature Statistics
September Temperature
Novato / Gnoss Field (19.3 miles)
Lowest 6 September, 2026
48.2 °FAverage September
67.2 °FHighest 9 September, 2026
100.4 °F
Climate (2021–2026)
Novato / Gnoss Field (19.3 miles)
Average Low 2021–2026
46.9 °FAverage 2021–2026
57.8 °FAverage High 2021–2026
72.5 °F