easeweather.com

Weather in Butte, Montana for September 2026

Your guide to Butte weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Butte at the beginning of September is 24.1 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 22.1 °F by the end of September.

  • Rain 🌧️

  • With an average of 4 rainy days, Butte experiences minimal rainfall in September.

  • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
26
Dry days
Average rainy days
4
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/8°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
48 %
Avg humidity

Butte Weather September

Move between months or click on a day

Temperatures trend during September in Butte

See the weather trend as well as the moving average line

September weather in Butte day by day

Click on a date for more information
Date Weather Temperatures Rain UV More
Sept. 1 Sunny
Sunny
27° /13° 0 mm 8
Sept. 2 Sunny
Sunny
28° /13° 0 mm 8
Sept. 3 Sunny
Sunny
27° /13° 0 mm 8
Sept. 4 Sunny
Sunny
21° /10° 0 mm 8
Sept. 5 Sunny
Sunny
19° /5° 0 mm 7
Sept. 6 Sunny
Sunny
23° /6° 0 mm 7
Sept. 7 Overcast
Overcast
24° /11° 0 mm 6
Sept. 8 Sunny
Sunny
23° /7° 0 mm 7
Sept. 9 Thundery outbreaks possible
Thundery outbreaks possible
22° /11° 0 mm 3
Sept. 10 Thundery outbreaks possible
Thundery outbreaks possible
24° /9° 0 mm 7
Sept. 11 Thundery outbreaks possible
Thundery outbreaks possible
22° /8° 0 mm 7
Sept. 12 Thundery outbreaks possible
Thundery outbreaks possible
17° /7° 0 mm 5
Sept. 13 Thundery outbreaks possible
Thundery outbreaks possible
17° /6° 0 mm 5
Sept. 14 Thundery outbreaks possible
Thundery outbreaks possible
21° /8° 0 mm 6
Sept. 15 Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
11° /7° 21.6 mm 2
Sept. 16 Overcast
Overcast
16° /7° 0 mm 4
Sept. 17 Partly cloudy
Partly cloudy
20° /7° 0 mm 6
Sept. 18 Sunny
Sunny
23° /7° 0 mm 6
Sept. 19 Overcast
Overcast
22° /9° 0 mm 4
Sept. 20 Sunny
Sunny
24° /10° 0 mm 5
Sept. 21 Overcast
Overcast
21° /8° 45.3 mm 5
Sept. 22 Cloudy
Cloudy
15° /5° 4.2 mm 5
Sept. 23 Sunny
Sunny
23° /4° 0 mm 5
Sept. 24 Sunny
Sunny
24° /7° 0 mm 5
Sept. 25 Sunny
Sunny
25° /9° 0 mm 5
Sept. 26 Cloudy
Cloudy
18° /8° 0 mm 5
Sept. 27 Sunny
Sunny
22° /3° 0 mm 4
Sept. 28 Partly cloudy
Partly cloudy
24° /8° 0 mm 4
Sept. 29 Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
23° /9° 21.5 mm 4
Sept. 30 Thundery outbreaks possible
Thundery outbreaks possible
19° /8° 0 mm 3
Next
Important Notice
Our weather forecast for Butte in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Butte forecast closer to your planned date for the most up-to-date weather information.

Butte in September - FAQ

What are the expected maximum and minimum temperatures in Butte during September?

Enjoy moderate daytime temperatures of up to 22° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Butte during September?

Moderate rainfall is anticipated in Butte during September, with a total of 92.6 mm spread over approximately 4 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Butte during September?

The average wind speed in Butte during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Butte

Explore the daily rainfall trends and prepare for Buttes September weather 💧
Typically, Butte has 4 rainy days in September with a total of 92.6 mm of rainfall.

UV exposure in Butte during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

Quick links

More Butte weather pages
Location coordinates Where is Butte?

Get accurate weather forecasts for Butte, located at latitude 46.004 and longitude -112.535. Stay updated with localized weather information tailored for Butte.

Found a mistake?
We appreciate your attention to details. Tell us here.