Montana Weather in September
In Montana, September brings moderate daytime temperatures around 15°C (59°F), with nights cooling to 3°C (37°F). Expect quite a bit of rainfall this month.
Rainfall in Montana in September
Historically, approximately 14 days this month are expected to have rain, averaging 123 mm (4.8 in). When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Montana in September
September in Montana brings moderate temperatures, with highs of 15°C (59°F) and nights around 3°C (37°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights drop to 3°C (37°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Montana in September
The days are predominantly sunny, with an estimated total of around 210 hours of sunshine. Despite the cool temperatures, these sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.
Wind Speed in Montana in September
Average wind conditions reach 2 m/s (4 knots) in September. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for Montana.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Switzerland, check out our Montana's climate page.
Montana Temperature in September
Min Temperature
3°C (37°F)
Max Temperature
15°C (59°F)
Chance of Rain
46%
Precipitation
123 mm (4.8 in)
Rainy days
14 days
Humidity
71% *
Windspeed
2 m/s (4 knots) *
Sunshine
210 hours *
Percentage Sunshine
65% *
Best Places in Switzerland in September
Find out more about the weather in Switzerland and which places have the best travel conditions in this month. See all of Switzerland in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Montana in September
The weather can swing between comfortable and chilly in September, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Montana in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Switzerland, check out our Montana's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Montana climate overview or explore weather in Switzerland.
