Weather forecast for 10 daysLake McDonald, MT
Weather forecast for the weekend
Sunday Oct 18, 2026
- 61°F
- 36°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphWNW 293°
- Humidity: 59%
- UV index: 3
- Sunrise: 8:00 am MDT
- Sunset: 6:40 pm MDT
- details ▼
On Sunday, in Lake McDonald, a sun-drenched sky is anticipated.
The maximum temperature will be a comfortable 60.8°F, while the minimum forecasted temperature is a wintry 35.6°F.
Today, the maximum temperature will be higher and more reflective of September's average high of 65.5°F than October's of 48.4°F.
Sunrise will be at 8:00 am and sunset at 6:40 pm; the daylight will last for 10h and 40min.
The maximum temperature will be a comfortable 60.8°F, while the minimum forecasted temperature is a wintry 35.6°F.
Today, the maximum temperature will be higher and more reflective of September's average high of 65.5°F than October's of 48.4°F.
Sunrise will be at 8:00 am and sunset at 6:40 pm; the daylight will last for 10h and 40min.
10-day overview
Daily temperatures
Warmest period: Tuesday - Thursday 64°C.
Coldest period: Sunday - Tuesday 41°C.
Coldest period: Sunday - Tuesday 41°C.
Chance of precipitation
Highest chance: Friday 57%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 61°F
- 36°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphWNW 293°
- Humidity: 59%
- UV index: 3
- Sunrise: 8:00 am MDT
- Sunset: 6:40 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 63°F
- 39°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 3mphE 81°
- Humidity: 57%
- UV index: 2
- Sunrise: 8:02 am MDT
- Sunset: 6:38 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 64°F
- 37°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphE 79°
- Humidity: 55%
- UV index: 2
- Sunrise: 8:03 am MDT
- Sunset: 6:36 pm MDT
- details ▼
- Wednesday
- Oct 21, 2026
- 64°F
- 43°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 5mphSSW 212°
- Humidity: 52%
- UV index: 2
- Sunrise: 8:05 am MDT
- Sunset: 6:35 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 64°F
- 41°F
Mostly Cloudy
- Precip. probability: 24%
- Precipitation: 0.12"
- Wind: 6mphS 180°
- Humidity: 58%
- UV index: 2
- Sunrise: 8:06 am MDT
- Sunset: 6:33 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 46°F
- 30°F
Showers
- Precip. probability: 57%
- Precipitation: 0.28"
- Wind: 7mphWSW 245°
- Humidity: 87%
- UV index: 1
- Sunrise: 8:08 am MDT
- Sunset: 6:31 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 43°F
- 28°F
Mostly Cloudy
- Precip. probability: 17%
- Precipitation: 0.12"
- Wind: 7mphS 178°
- Humidity: 73%
- UV index: 2
- Sunrise: 8:10 am MDT
- Sunset: 6:29 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 41°F
- 27°F
Rain / Snow Showers
- Precip. probability: 42%
- Precipitation: 0.2"
- Wind: 8mphENE 71°
- Humidity: 74%
- UV index: 1
- Sunrise: 8:11 am MDT
- Sunset: 6:27 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 41°F
- 27°F
Partly Cloudy
- Precip. probability: 20%
- Precipitation: 0"
- Wind: 7mphE 86°
- Humidity: 73%
- UV index: 2
- Sunrise: 8:13 am MDT
- Sunset: 6:26 pm MDT
- details ▼
- Tuesday
- Oct 27, 2026
- 41°F
- 28°F
Rain / Snow Showers
- Precip. probability: 34%
- Precipitation: 0.2"
- Wind: 7mphSW 215°
- Humidity: 84%
- UV index: 2
- Sunrise: 8:14 am MDT
- Sunset: 6:24 pm MDT
- details ▼
Over the course of the next ten days, expect shifting weather, and a mix of gloomy, snow-filled, dry and sunny and rain-filled weather is anticipated.
Rainfall is expected on Thursday through Saturday.
Snowfall is anticipated on next Sunday and Tuesday. With moderate precipitation of 0.28", most snowfall is expected on Friday.
There will be a considerable variation in temperature across the forecast period. Forecast highs will fluctuate between 41°F and 64.4°F, while the nightly low temperatures will show also a considerable swing, as the lowest temperatures will be recorded between 26.6°F and 42.8°F.
Tuesday through Thursday, with the highest temperature of 64.4°F, will be the warmest days in Lake McDonald; next Sunday through next Tuesday, with the highest temperature of 41°F, will be the coldest days in Lake McDonald.
Rainfall is expected on Thursday through Saturday.
Snowfall is anticipated on next Sunday and Tuesday. With moderate precipitation of 0.28", most snowfall is expected on Friday.
There will be a considerable variation in temperature across the forecast period. Forecast highs will fluctuate between 41°F and 64.4°F, while the nightly low temperatures will show also a considerable swing, as the lowest temperatures will be recorded between 26.6°F and 42.8°F.
Tuesday through Thursday, with the highest temperature of 64.4°F, will be the warmest days in Lake McDonald; next Sunday through next Tuesday, with the highest temperature of 41°F, will be the coldest days in Lake McDonald.
Updated: Oct 18, 2026 @ 12:28:00 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 Lake McDonald, sunshine and minimal clouds are in the outlook.
Today, the highest temperature in Lake McDonald will be 60.8°F, while the lowest temperature will be 35.6°F.
Today, the highest temperature will be significantly higher than the average maximum of 48.4°F in October. Today, the lowest temperature will be moderately higher than the average low temperature.
Today, the highest temperature will be significantly higher than the average maximum of 48.4°F in October. Today, the lowest temperature will be moderately higher than the average low temperature.
On Sunday, in Lake McDonald, sunrise will be at 8:00 am and sunset at 6:40 pm (MDT).
In Lake McDonald, Montana, today, there will be 10h and 40min of daylight.
