Chamonix is in for around 28 mm of rain today, falling as showers in the valley. Friday looks dry. Morning fog first, then up to 11 degrees in town. Zermatt starts the day at 2 degrees and climbs to nearly 15. That is your window. On Saturday the rain returns. After a day this wet, paths and rock stay slick well into the morning, so pick a route you can easily turn back on.
Outdoor jackets ↗