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The weather in Crans Montana in September is very cold with temperatures between 3°C and 14°C, warm clothes are a must.
You can expect rain for roughly half of the month of September in Crans Montana. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
You can expect a few days of snow in Crans Montana during September. It’s important to get out your snow boots and warm mittens to stay warm while you explore Crans Montana.
Our weather forecast can give you a great sense of what weather to expect in Crans Montana in September 2026.
If you’re planning to visit Crans Montana in the near future, we highly recommend that you review the 14 day weather forecast for Crans Montana before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -2° / -12° | 6 | 5 | 22 | 228 mm | Awful | Crans Montana in January |
| February | -1° / -12° | 5 | 5 | 21 | 156 mm | Awful | Crans Montana in February |
| March | 1° / -9° | 7 | 4 | 23 | 178 mm | Awful | Crans Montana in March |
| April | 6° / -4° | 12 | 4 | 18 | 167 mm | Awful | Crans Montana in April |
| May | 10° / -1° | 19 | 4 | 12 | 320 mm | Awful | Crans Montana in May |
| June | 15° / 4° | 19 | 9 | 2 | 261 mm | Bad | Crans Montana in June |
| July | 18° / 6° | 16 | 15 | 1 | 255 mm | Ok | Crans Montana in July |
| August | 18° / 6° | 16 | 15 | 1 | 224 mm | Ok | Crans Montana in August |
| September | 14° / 3° | 12 | 16 | 3 | 141 mm | Bad | Crans Montana in September |
| October | 9° / -1° | 8 | 15 | 8 | 116 mm | Awful | Crans Montana in October |
| November | 3° / -5° | 6 | 8 | 17 | 153 mm | Awful | Crans Montana in November |
| December | -1° / -10° | 5 | 7 | 21 | 200 mm | Awful | Crans Montana in December |