Montana (Billings)
October
Weather in Montana for October 2026
Your guide to Montana weather in October - trends and predictions
The forecast for the first days of October 2026 in Montana predicts a temperature of 20.9 °F, which is slightly above the historical average.
In general, the average temperature in Montana at the beginning of October is 21.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12.7 °F by the end of October.
Montana experiences moderate rainfall in October, with an average of 8 rainy days and a total precipitation of 98.6 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
23
Dry days
8
Rainy days
0
Snow days
18°/4°
Temperatures
20 km/h
Avg max wind
55 %
Avg humidity
Montana Weather October
Move between months or click on a day
What’s the Weather Like in Montana This October?
Discover the average temperatures and weather trends across Montana’s cities this October.
Temperatures trend during October in Montana
See the weather trend as well as the moving average line
October weather in Montana day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Oct. 1 |  Overcast | 20° /8° | 0 mm | 4 | |
| Oct. 2 | Overcast | 26° /11° | 0 mm | 3.8 | |
| Oct. 3 |  Sunny | 19° /11° | 0 mm | 5 | |
| Oct. 4 | Sunny | 19° /8° | 0 mm | 5 | |
| Oct. 5 | Overcast | 18° /7° | 0 mm | 4 | |
| Oct. 6 | Sunny | 26° /11° | 0 mm | 7 | |
| Oct. 7 | Sunny | 22° /10° | 0 mm | 6 | |
| Oct. 8 | Sunny | 18° /7° | 0 mm | 5 | |
| Oct. 9 | Overcast | 22° /9° | 0 mm | 5 | |
| Oct. 10 | Overcast | 20° /7° | 0 mm | 5 | |
| Oct. 11 | Sunny | 13° /5° | 0 mm | 4 | |
| Oct. 12 | Sunny | 20° /3° | 0 mm | 6 | |
| Oct. 13 | Sunny | 12° /2° | 0 mm | 4 | |
| Oct. 14 | Sunny | 18° /2° | 0 mm | 5 | |
| Oct. 15 | Sunny | 16° /4° | 2.3 mm | 4 | |
| Oct. 16 | Sunny | 19° /6° | 0 mm | 5 | |
| Oct. 17 |  Moderate or heavy rain shower | 15° /4° | 8.8 mm | 4 | |
| Oct. 18 | Overcast | 12° /2° | 3.5 mm | 4 | |
| Oct. 19 | Sunny | 19° /2° | 0 mm | 5 | |
| Oct. 20 | Sunny | 18° /4° | 0 mm | 5 | |
| Oct. 21 | Overcast | 19° /4° | 0.2 mm | 5 | |
| Oct. 22 | Moderate rain at times | 16° /2° | 0.7 mm | 5 | |
| Oct. 23 | Overcast | 18° /0° | 0 mm | 5 | |
| Oct. 24 |  Patchy rain possible | 16° /1° | 1.8 mm | 4 | |
| Oct. 25 | Sunny | 15° /1° | 0 mm | 4 | |
| Oct. 26 |  Cloudy | 17° /3° | 0 mm | 4 | |
| Oct. 27 | Overcast | 14° /1° | 0 mm | 4 | |
| Oct. 28 | Patchy rain possible | 11° /0° | 0.1 mm | 3 | |
| Oct. 29 | Overcast | 10° /-1° | 0 mm | 3 | |
| Oct. 30 |  Mist | 11° /-3° | 0 mm | 4 | |
| Oct. 31 |  Partly cloudy | 11° /-5° | 0 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Montana in October 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 Montana forecast closer to your planned date for the most up-to-date weather information.
Change Month
Montana in October - FAQ
What are the expected maximum and minimum temperatures in Montana during October?
During October, expect a variety of temperatures with highs around 18° and lows near 4°, suitable for diverse activities and preferences.
How much rainfall should be expected in Montana during October?
Moderate rainfall is anticipated in Montana during October, with a total of 98.6 mm spread over approximately 8 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Montana during October?
The average wind speed in Montana during October is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
October rainfall patterns in Montana
Explore the daily rainfall trends and prepare for Montanas October weather 💧
Typically, Montana has 8 rainy days in October with a total of 98.6 mm of rainfall.
UV exposure in Montana during October
Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
Counties in Montana
Select a county for an accurate weather forecast
Top locations in Montana
Select a location for an accurate weather forecast
More Locations Quick links
More Montana weather pages
You are here
Where is Montana?Get accurate weather forecasts for Montana, located at latitude 45.783 and longitude -108.501. Stay updated with localized weather information tailored for Montana.
Found a mistake?
We appreciate your attention to details. Tell us here.