Weather forecast for 10 daysSaint Marie, MT

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 57°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 9mphNNW 344°
  • Humidity: 47%
  • UV index: 3
  • Sunrise: 7:30 am MDT
  • Sunset: 6:11 pm MDT
  • ▼
Today, on Sunday, October 18, sun and clouds will share the sky, creating a partly cloudy day.
The temperature will vary between a maximum of a moderate 57.2°F and a minimum of a cold 37.4°F.
The expected maximum is forecasted to be in line with the regular October temperature of 53.8°F.
Sunrise will be at 7:30 am and sunset at 6:11 pm; the daylight will last for 10h and 41min.

10-day overview

Daily temperatures

Warmest day: Thursday 68°C.
Coldest period: Monday - Tuesday 43°C.

Chance of precipitation

Highest chance: Friday 61%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 57°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 9mphNNW 344°
  • Humidity: 47%
  • UV index: 3
  • Sunrise: 7:30 am MDT
  • Sunset: 6:11 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 64°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 18mphSE 141°
  • Humidity: 45%
  • UV index: 3
  • Sunrise: 7:32 am MDT
  • Sunset: 6:09 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 64°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 10mphNNE 17°
  • Humidity: 55%
  • UV index: 2
  • Sunrise: 7:33 am MDT
  • Sunset: 6:07 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 63°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 14mphSE 135°
  • Humidity: 58%
  • UV index: 2
  • Sunrise: 7:35 am MDT
  • Sunset: 6:05 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 68°F
  • 50°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 9mphSE 139°
  • Humidity: 62%
  • UV index: 2
  • Sunrise: 7:37 am MDT
  • Sunset: 6:04 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 59°F
  • 36°F
Showers
Showers
  • Precip. probability: 61%
  • Precipitation: 0.28"
  • Wind: 17mphNNW 335°
  • Humidity: 70%
  • UV index: 1
  • Sunrise: 7:38 am MDT
  • Sunset: 6:02 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 45°F
  • 28°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 19mphWNW 288°
  • Humidity: 62%
  • UV index: 2
  • Sunrise: 7:40 am MDT
  • Sunset: 6:00 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 45°F
  • 30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 14mphENE 75°
  • Humidity: 69%
  • UV index: 2
  • Sunrise: 7:41 am MDT
  • Sunset: 5:58 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 43°F
  • 30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 11mphENE 75°
  • Humidity: 81%
  • UV index: 2
  • Sunrise: 7:43 am MDT
  • Sunset: 5:56 pm MDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 43°F
  • 28°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 13mphENE 72°
  • Humidity: 86%
  • UV index: 2
  • Sunrise: 7:44 am MDT
  • Sunset: 5:55 pm MDT
  • ▼
Over the next ten days, a mix of cloudy, dry and sunny and rain-soaked weather is forecasted.
With a probability of 61%, rainfall is expected only on Friday. The precipitation will be light at 0.28".
Substantial differences in temperature are forecasted in the upcoming period. Maximum temperatures are forecasted between 42.8°F and 68°F, while the difference in minimum temperatures will be also substantial, as nighttime lows are forecast to fall between 28.4°F and 50°F.
Expect the warmest day on Thursday, with temperatures peaking at 68°F; next Monday and Tuesday, with the highest temperature of 42.8°F, will be the coldest days.
Updated: Oct 18, 2026 @ 10:32:35 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, in Saint Marie, thin clouds will pass through at times, but overall, it will remain bright.

Today, the maximum temperature will be 57.2°F, while the minimum temperature will be 37.4°F.
Today, the highest temperature will be in line with the average maximum temperature in October. Today, the lowest temperature will be also in line with the average low temperature.

On Sunday, in Saint Marie, sunrise will be at 7:30 am and sunset at 6:11 pm (MDT).

Today, the daylight will last for 10h and 41min.