Weather forecast for 10 daysGeyser, MT
Weather forecast for the weekend
Sunday Oct 18, 2026
- 59°F
- 39°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 12mphESE 105°
- Humidity: 46%
- UV index: 3
- Sunrise: 7:45 am MDT
- Sunset: 6:28 pm MDT
- details ▼
On Sunday, October 18, thin clouds will pass through at times, but overall, it will remain bright.
Temperature span will be from a high of a mild 59°F to a low of an icy 39.2°F.
With a forecast of 59°F, conditions deviate from October's average and instead resemble September's climate trend.
Sunrise will be at 7:45 am and sunset at 6:28 pm; the daylight will last for 10h and 44min.
Temperature span will be from a high of a mild 59°F to a low of an icy 39.2°F.
With a forecast of 59°F, conditions deviate from October's average and instead resemble September's climate trend.
Sunrise will be at 7:45 am and sunset at 6:28 pm; the daylight will last for 10h and 44min.
10-day overview
Daily temperatures
Maximum temperature: 70°C.
Coldest day: Sunday 25.10. 41°C.
Coldest day: Sunday 25.10. 41°C.
Chance of precipitation
Highest chance: Friday 55%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 59°F
- 39°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 12mphESE 105°
- Humidity: 46%
- UV index: 3
- Sunrise: 7:45 am MDT
- Sunset: 6:28 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 70°F
- 43°F
Mostly Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 8mphSW 214°
- Humidity: 41%
- UV index: 3
- Sunrise: 7:46 am MDT
- Sunset: 6:27 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 61°F
- 39°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 9mphWNW 290°
- Humidity: 49%
- UV index: 2
- Sunrise: 7:48 am MDT
- Sunset: 6:25 pm MDT
- details ▼
- Wednesday
- Oct 21, 2026
- 68°F
- 46°F
Mostly Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 7mphSW 230°
- Humidity: 48%
- UV index: 3
- Sunrise: 7:49 am MDT
- Sunset: 6:23 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 70°F
- 46°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 8mphWSW 240°
- Humidity: 45%
- UV index: 3
- Sunrise: 7:50 am MDT
- Sunset: 6:21 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 50°F
- 34°F
Showers
- Precip. probability: 55%
- Precipitation: 0.08"
- Wind: 16mphW 277°
- Humidity: 72%
- UV index: 2
- Sunrise: 7:52 am MDT
- Sunset: 6:20 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 45°F
- 30°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0.24"
- Wind: 11mphWSW 255°
- Humidity: 61%
- UV index: 2
- Sunrise: 7:53 am MDT
- Sunset: 6:18 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 41°F
- 32°F
Partly Cloudy
- Precip. probability: 21%
- Precipitation: 0"
- Wind: 11mphW 268°
- Humidity: 70%
- UV index: 2
- Sunrise: 7:55 am MDT
- Sunset: 6:16 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 43°F
- 30°F
Mostly Sunny
- Precip. probability: 14%
- Precipitation: 0"
- Wind: 9mphWSW 254°
- Humidity: 62%
- UV index: 2
- Sunrise: 7:56 am MDT
- Sunset: 6:14 pm MDT
- details ▼
- Tuesday
- Oct 27, 2026
- 45°F
- 30°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 12mphWSW 254°
- Humidity: 70%
- UV index: 2
- Sunrise: 7:58 am MDT
- Sunset: 6:13 pm MDT
- details ▼
During the ten-day period, gloomy, dry and sunny and rainy weather is anticipated.
With a probability of 55%, rainfall is expected only on Friday. The precipitation will be light at 0.24".
Temperature variation will be noticeable in the coming days. The temperature is expected to swing from 41°F up to 69.8°F, while the lowest nightly temperature differences will be also quite pronounced, as the lowest temperatures will be recorded between 30.2°F and 46.4°F.
Monday and Thursday, with the highest temperature of 69.8°F, will be the warmest days in Geyser; the coldest day will be next Sunday, with a maximum of 41°F.
With a probability of 55%, rainfall is expected only on Friday. The precipitation will be light at 0.24".
Temperature variation will be noticeable in the coming days. The temperature is expected to swing from 41°F up to 69.8°F, while the lowest nightly temperature differences will be also quite pronounced, as the lowest temperatures will be recorded between 30.2°F and 46.4°F.
Monday and Thursday, with the highest temperature of 69.8°F, will be the warmest days in Geyser; the coldest day will be next Sunday, with a maximum of 41°F.
Updated: Oct 18, 2026 @ 06:10:41 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, sun and clouds will share the sky, creating a partly cloudy day.
Today, the maximum temperature will be 59°F, while the minimum temperature will be 39.2°F.
The highest temperature today will be significantly higher than the average maximum of 46.4°F in October. The lowest temperature will be also significantly higher than the average low of 29.8°F.
The highest temperature today will be significantly higher than the average maximum of 46.4°F in October. The lowest temperature will be also significantly higher than the average low of 29.8°F.
On Sunday, in Geyser, sunrise will be at 7:45 am and sunset at 6:28 pm (MDT).
In Geyser, today, there will be 10h and 44min of daylight.
