Fall Weather

I have seen it snow there (around Grindelwald) in mid-September, so you need to be prepared for anything. wool or fleece hats and gloves included. Waterproof shoes or boots, rain gear, warm fleece jackets.

Zermatt weather is somewhat unpredictable even in summer season. Plan accordingly to be flexible when scheduling Zermatt. I had to cancel and redirect my itin from Zermatt in summer to elsewhere twice. But the third was perfect for 3 nights.

!) Merino wool long underwear, always warm, dry, light, and compressible.

2) Goretex jacket is good for warm or cold.

3) Long pants, ideally not jeans in case they get wet.

4) Good hiking shoes, preferable if they are waterproof, but not everyone has room for two sets of shoes.

5) Think New England in November......

Have fun. The weather will probably be mixed, so plan for outdoors and museum activities.... The train up the Gornergrat and the gondola up to the glacier should be running in Zermatt.

https://www.zermatt.ch/en

https://view.news.zermatt.ch/?qs=7fea3de3081b986f004c9373a6cc2a2aae6353e4e927aabc16077601f5d26e790865e3666558c1e163b650430d0363ac6e9cd11854e2a45d19ca7e6edac7804e9071ba322ea28c84480cadac7ec51d09

Silk long johns are a good idea. Silk keeps you cool in hot weather and warm in cold. Merino wool is good too, but takes longer to dry after being laundered.

There are some decent thermal underwear at Costco--the brand is "32 degrees". These only keep you warm, not cool. Not sure if they are available at the store yet, but I usually stock up every year.

The weather in Oct-Nov is unstable. As mentioned above, anything can happen.