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Marin County
Top 10 things to do in Marin County
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Best time to visit Marin County
Data source：Meteostat
Last updated：2025-09
Weather in Marin County throughout the year
- Spring (March–May): Average 52–60°F, mild climate, gradually decreasing rainfall, and increasingly sunny days. Common activities: Hiking, cycling, flower viewing. Recommended clothing: Light jacket, long-sleeved shirt, comfortable casual shoes.
- Summer (June–August): Average 64–67°F, dry and less rain, abundant sunshine, the best season for outdoor activities. Common activities: Beach activities, camping, hiking. Recommended clothing: Short-sleeved shirts, shorts, sandals, sunscreen is a must.
- Autumn (September–November): Average 61–51°F, gradually decreasing temperature, rainfall begins to increase. Common activities: Autumn scenery viewing, winery visits. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
- Winter (December–February): Average 49–50°F, lower temperatures, more rainfall, occasional drizzle. Common activities: Indoor activities, museum visits. Recommended clothing: Warm jacket, sweater, waterproof jacket, and warm shoes.
Weather in Marin County
Annual average temperature: approx. 58.1°F / Annual rainfall: approx. 738 mm / Summer humidity: 60%–70% / Rainiest month: December
Marin County weather by month
Month
Temperature (°F)
Rainfall (mm)
January
50.2°F
175.1
February
49.6°F
101.7
March
52.5°F
105.3
April
56.3°F
27.8
May
60.3°F
20.2
June
64.8°F
2.8
July
67.1°F
2.5
August
67.6°F
0.5
September
65.5°F
21.9
October
61.5°F
7.3
November
51.6°F
91.8
December
49.5°F
181.2
7-day weather forecast for Marin County
11/4
Wednesday
Overcast
63.6°F/51.7°F
11/5
Thursday
Sunny
64.9°F/55.3°F
11/6
Friday
Sunny
66.6°F/56.5°F
11/7
Saturday
Sunny
68.3°F/56.9°F
11/8
Sunday
Sunny
66.7°F/56.6°F
11/9
Monday
Partly Cloudy
62.7°F/55.8°F
11/10
Tuesday
Partly Cloudy
64.3°F/55.5°F
