Weather forecast for 10 daysGallatin Gateway, MT
Weather forecast for the weekend
Sunday Oct 18, 2026
- 61°F
- 36°F
Mostly Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 7mphNNE 31°
- Humidity: 52%
- UV index: 3
- Sunrise: 7:45 am MDT
- Sunset: 6:34 pm MDT
- details ▼
On Sunday, in Gallatin Gateway, sunshine will prevail for most of the day.
The maximum temperature will be a breezy 60.8°F, while the minimum expected temperature is an icy 35.6°F.
Expect temperatures to match September's average maximum of 65.3°F rather than October's 48.4°F.
Sunrise will be at 7:45 am and sunset at 6:34 pm; the daylight will last for 10h and 49min.
The maximum temperature will be a breezy 60.8°F, while the minimum expected temperature is an icy 35.6°F.
Expect temperatures to match September's average maximum of 65.3°F rather than October's 48.4°F.
Sunrise will be at 7:45 am and sunset at 6:34 pm; the daylight will last for 10h and 49min.
10-day overview
Daily temperatures
Warmest day: tomorrow 66°C.
Coldest day: Tuesday 27.10. 41°C.
Coldest day: Tuesday 27.10. 41°C.
Chance of precipitation
Highest chance: Friday 82%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 61°F
- 36°F
Mostly Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 7mphNNE 31°
- Humidity: 52%
- UV index: 3
- Sunrise: 7:45 am MDT
- Sunset: 6:34 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphWSW 249°
- Humidity: 45%
- UV index: 3
- Sunrise: 7:46 am MDT
- Sunset: 6:32 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 63°F
- 37°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 6mphNW 311°
- Humidity: 51%
- UV index: 3
- Sunrise: 7:48 am MDT
- Sunset: 6:30 pm MDT
- details ▼
- Wednesday
- Oct 21, 2026
- 64°F
- 39°F
Mostly Sunny
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 5mphWSW 240°
- Humidity: 62%
- UV index: 3
- Sunrise: 7:49 am MDT
- Sunset: 6:29 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 64°F
- 41°F
Mostly Sunny
- Precip. probability: 11%
- Precipitation: 0.12"
- Wind: 6mphSSW 203°
- Humidity: 59%
- UV index: 3
- Sunrise: 7:51 am MDT
- Sunset: 6:27 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 48°F
- 28°F
Rain
- Precip. probability: 82%
- Precipitation: 0.51"
- Wind: 7mphW 277°
- Humidity: 87%
- UV index: 1
- Sunrise: 7:52 am MDT
- Sunset: 6:25 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 46°F
- 28°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 6mphSW 236°
- Humidity: 72%
- UV index: 3
- Sunrise: 7:53 am MDT
- Sunset: 6:24 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 52°F
- 27°F
Partly Cloudy
- Precip. probability: 11%
- Precipitation: 0"
- Wind: 6mphSSW 210°
- Humidity: 66%
- UV index: 3
- Sunrise: 7:55 am MDT
- Sunset: 6:22 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 43°F
- 27°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 6mphW 273°
- Humidity: 72%
- UV index: 3
- Sunrise: 7:56 am MDT
- Sunset: 6:20 pm MDT
- details ▼
- Tuesday
- Oct 27, 2026
- 41°F
- 27°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 7mphWSW 251°
- Humidity: 78%
- UV index: 3
- Sunrise: 7:57 am MDT
- Sunset: 6:19 pm MDT
- details ▼
Looking ahead, conditions suggest a period of dull, sunny and rain-soaked weather is forecasted.
Rainfall is predicted for Thursday and Friday.
Noticeable swings in temperature are expected over the next several days. Forecast highs will fluctuate between 41°F and 66.2°F, while the nightly low temperatures will show also a considerable swing, as nighttime lows are forecast to fall between 26.6°F and 41°F.
Monday is expected to be the warmest, reaching up to 66.2°F; the coldest day will be next Tuesday, with a maximum of 41°F.
Rainfall is predicted for Thursday and Friday.
Noticeable swings in temperature are expected over the next several days. Forecast highs will fluctuate between 41°F and 66.2°F, while the nightly low temperatures will show also a considerable swing, as nighttime lows are forecast to fall between 26.6°F and 41°F.
Monday is expected to be the warmest, reaching up to 66.2°F; the coldest day will be next Tuesday, with a maximum of 41°F.
Updated: Oct 18, 2026 @ 09:51:43 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Today, in Gallatin Gateway, a glowing sky and minimal clouds are expected.
Today, the maximum temperature will be 60.8°F, while the minimum temperature will be 35.6°F.
The highest temperature will be significantly higher than the average maximum of 48.4°F in October. The lowest temperature will be slightly warmer than the average low of 29.8°F.
The highest temperature will be significantly higher than the average maximum of 48.4°F in October. The lowest temperature will be slightly warmer than the average low of 29.8°F.
On Sunday, in Gallatin Gateway, sunrise will be at 7:45 am and sunset at 6:34 pm (MDT).
Today, the daylight will last for 10h and 49min.
