Yosemite National Park weather
Our guide to the weather in Yosemite National Park during September
We've looked at the most up-to-date weather data for Yosemite National Park, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Yosemite National Park weather in September.
How warm is it in Yosemite National Park during September?
The temperature reaches around 20℃ during the daytime in September, falling away to 6℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.
Does it snow in Yosemite National Park during September?
Possibly. There's a chance of snow during September but not as much as you might think. Check the local forecast before you leave home so that you can pack appropriate footwear and clothing.
Does it rain in Yosemite National Park during September?
On average, in September you'll see rain on just one day in the month. In other words, you shouldn't see any of the wet stuff. There's a small chance that you'll catch a thunderstorm during your trip.
Is it windy in Yosemite National Park during September?
You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in September. With moderate humidity and mild air temperatures, the breeze will have a slight cooling effect.
Yosemite National Park Blog posts
From the UK's most popular travel bloggers
11 very best things to do in Yosemite National Park
17th March 2021 by Hand Luggage Only
Filled with millions of years of history and vistas that’ll know your socks off, Yosemite is the kind of national park that’s totally worth the hype. From mountain treks to iconic vistas, there’s a heap of the best things to do in Yosemite that is dotted all across the park. For me, Yosemite was one of the first national parks in the US that I ever visited; and boy was it a good way to start! It’s the kind of place that’s pretty accessible by car and one iconic spot in California...
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