San Anselmo Weather in September

In San Anselmo, September brings high daytime temperatures around 27°C (81°F), with nights cooling to 12°C (54°F). Minimal rainfall is to be expected.

Rainfall in San Anselmo in September

Typically around a single day of rainfall are expected, averaging 4.2 mm (0.2 in) for the month. On the rare occasion it rains, expect a brief, moderate shower rather than a heavy downpour.

Temperature in San Anselmo in September

San Anselmo in September is worth a visit. The temperature is excellent, with 27°C (81°F) during the day and 12°C (54°F) at night. Experience the summer season in September. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 12°C (54°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in San Anselmo in September

The city usually sees around 270 hours of sunlight, indicating many sunny days — a great month for sightseeing.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

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• January
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For a detailed overview over the year and the best time to visit the United States of America, check out our San Anselmo's climate page.

San Anselmo Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 27°C (81°F)  

Chance of Rain 3%  

Precipitation 4.2 mm (0.2 in)  

Rainy days a single day  

Humidity 73% *  

Sunshine 270 hours *  

Percentage Sunshine 73% *  

* Data from: San Francisco, the United States of America (42 KM, 26 Miles).

What to Wear in San Anselmo in September

Warm but pleasant conditions in San Anselmo in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Dry conditions mean you won't need to worry about rain protection. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in San Anselmo in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our San Anselmo's climate page.

More climate data for San Anselmo

Temperature Rainfall Sunshine Humidity

See the full San Anselmo climate overview or explore weather in the United States of America.