Yellowstone County (Billings)
October
Weather in Yellowstone County, Montana for October 2026
Your guide to Yellowstone County weather in October - trends and predictions
So far, October 2026 in Yellowstone County is slightly warmer than the historical average by 0.8 °C.
Expect cooler weather in the next days in Yellowstone County with the forecast suggesting a temperature of 11.7 °C, lower than the historical average.
In general, the average temperature in Yellowstone County at the beginning of October is 22.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12.5 °C by the end of October.
With an average of 4 rainy days, Yellowstone County experiences minimal rainfall in October.
Is October a good time to visit Yellowstone County? check out the best time to travel to Yellowstone County page.
✨ Is October a good time to visit Yellowstone County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
27
Dry days
4
Rainy days
0
Snow days
18°/4°
Temperatures
20 km/h
Avg max wind
53 %
Avg humidity
Yellowstone County Weather October
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Temperatures trend during October in Yellowstone County
See the weather trend as well as the moving average line
October weather in Yellowstone County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Oct. 1 |  Cloudy | 23° /7° | 0 mm | 4.3 | |
| Oct. 2 | Cloudy | 27° /9° | 0 mm | 4.2 | |
| Oct. 3 |  Overcast | 20° /8° | 0 mm | 4 | |
| Oct. 4 |  Heavy rain | 22° /6° | 35.2 mm | 4 | |
| Oct. 5 |  Light rain | 20° /8° | 3.2 mm | 4 | |
| Oct. 6 |  Sunny | 22° /7° | 0 mm | 3.9 | |
| Oct. 7 | Sunny | 24° /6° | 0 mm | 3.8 | |
| Oct. 8 | Sunny | 25° /7° | 0 mm | 3.7 | |
| Oct. 9 | Sunny | 27° /8° | 0 mm | 3.6 | |
| Oct. 10 |  Patchy rain possible | 20° /8° | 1 mm | 3.6 | |
| Oct. 11 | Light rain | 17° /6° | 6.7 mm | 3 | |
| Oct. 12 |  Moderate rain | 13° /4° | 15.6 mm | 3 | |
| Oct. 13 | Overcast | 12° /2° | 0 mm | 3 | |
| Oct. 14 | Sunny | 18° /2° | 0 mm | 3.3 | |
| Oct. 15 | Patchy rain possible | 15° /4° | 1.5 mm | 3 | |
| Oct. 16 | Sunny | 19° /4° | 0 mm | 3.1 | |
| Oct. 17 | Light rain | 18° /5° | 5.8 mm | 3 | |
| Oct. 18 | Patchy rain possible | 14° /4° | 2.3 mm | 3 | |
| Oct. 19 | Sunny | 19° /2° | 0 mm | 2.9 | |
| Oct. 20 | Sunny | 18° /5° | 0 mm | 2.8 | |
| Oct. 21 | Overcast | 20° /4° | 0.1 mm | 2.8 | |
| Oct. 22 | Patchy rain possible | 19° /4° | 0.5 mm | 2.7 | |
| Oct. 23 | Overcast | 19° /2° | 0.5 mm | 2.6 | |
| Oct. 24 | Patchy rain possible | 15° /1° | 1.2 mm | 2.6 | |
| Oct. 25 | Sunny | 10° /0° | 0 mm | 2.7 | |
| Oct. 26 | Sunny | 14° /0° | 0 mm | 2.6 | |
| Oct. 27 | Light rain | 15° /2° | 3.1 mm | 1.1 | |
| Oct. 28 | Sunny | 13° /1° | 0 mm | 2.4 | |
| Oct. 29 | Sunny | 9° /0° | 0 mm | 3 | |
| Oct. 30 | Cloudy | 10° /2° | 0 mm | 2 | |
| Oct. 31 |  Partly cloudy | 11° /3° | 0 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Yellowstone County 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 Yellowstone County forecast closer to your planned date for the most up-to-date weather information.
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Yellowstone County in October - FAQ
What are the expected maximum and minimum temperatures in Yellowstone County 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 Yellowstone County during October?
Moderate rainfall is anticipated in Yellowstone County during October, with a total of 74.1 mm spread over approximately 4 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Yellowstone County during October?
The average wind speed in Yellowstone County during October is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
October rainfall patterns in Yellowstone County
Explore the daily rainfall trends and prepare for Yellowstone Countys October weather 💧
Typically, Yellowstone County has 4 rainy days in October with a total of 74.1 mm of rainfall.
UV exposure in Yellowstone County during October
Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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