Montana weather in September (Canton of Valais, Switzerland)

What weather conditions can you expect in Montana this September? Get all the weather information you need to plan your visit.

Temperatures

The month of September in Montana typically brings moderate temperatures and high rainfall. The daytime often sees temperatures reaching 15°C, but nighttime brings a cool-down to 3°C.

Precipitation

Montana in September usually receives high rainfall, averaging around 123 mm for the month. Historically, approximately 14 days this month are expected to have rain.

Average sunshine

With approximately 210 hours hours of sun, the days are filled with brightness. It makes it a perfect month for outdoor activities.

If you prefer dry days with pleasant temperatures, July and August typically offer the best circumstances. While January, February, March, April, May, October, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Montana climate page with graphs.

 

Montana, monthly averages in September

Min Temperature 3°C  

Max Temperature 15°C  

Chance of Rain 46%  

Precipitation 123 mm  

Rainy days 14 days  

Humidity 71% *  

Windspeed 7 km/h *  

Sunshine 210 hours *  

Percentage Sunshine 65% *  

Data from: Sion, Switzerland (14 KM, 9 Miles).

Where to go in Switzerland in September

Find out more about the weather in Switzerland and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly. Bring a rain jacket in case it rains during your stay.

What To Do

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

Swimming

4/10

Cycling

5/10

Walking

5/10

Camping

3/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Montana.

Our site offers climate and forecast data for every country in the world. Are you going to Switzerland? On this website you can find historical weather averages for many cities in Switzerland. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.