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St. Ignatius, MT Weather Forecast

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St. Ignatius, MT Weather Forecast

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St. Ignatius MT weather - Clear - 73°F
Clear
73°F
Updated 4:29 pm
Feels Like 67°F
Humidity 33%
Wind W 5 mph
Barometer  30.16 in
Dew Point 43°F
St. Ignatius MT weather - Clear - 23°C
Clear
23°C
Updated 4:29 pm
Feels Like 19°C
Humidity 33%
Wind W 8 km/h
Barometer  102.1 kPa
Dew Point 6°C
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St. Ignatius Weather Forecast

TONIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY
St. Ignatius, MT Weather - Tonight Partly Cloudy St. Ignatius, MT Weather - Sunday Mostly Sunny St. Ignatius, MT Weather - Sunday Night Partly Cloudy St. Ignatius, MT Weather - Monday Mostly Sunny St. Ignatius, MT Weather - Monday Night Mostly Clear St. Ignatius, MT Weather - Tuesday Mostly Sunny St. Ignatius, MT Weather - Tuesday Night Partly Cloudy St. Ignatius, MT Weather - Wednesday Mostly Sunny St. Ignatius, MT Weather - Wednesday Night Partly Cloudy St. Ignatius, MT Weather - Thursday Mostly Sunny St. Ignatius, MT Weather - Thursday Night Partly Cloudy St. Ignatius, MT Weather - Friday Partly Cloudy
Partly Cloudy Mostly Sunny Partly Cloudy Mostly Sunny Mostly Clear Mostly Sunny Partly Cloudy Mostly Sunny Partly Cloudy Mostly Sunny Partly Cloudy Partly Cloudy
Lo: 35°FLo: 2°C Hi: 70°FHi: 21°C
 Lo: 36°FLo: 2°C Hi: 75°FHi: 24°C
 Lo: 45°FLo: 7°C Hi: 70°FHi: 21°C
 Lo: 45°FLo: 7°C Hi: 70°FHi: 21°C
 Lo: 40°FLo: 4°C Hi: 70°FHi: 21°C
 Lo: 45°FLo: 7°C Hi: 70°FHi: 21°C
POP = Probability of Precipitation.
Weather Outlook Updated: 1222 PM MDT Sat Oct 03 2026 St. Ignatius, MT Weather - WeatherWorld.com

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St. Ignatius Forecast Discussion

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Issued: 1251 PM MDT Sat Oct 3 2026

Discussion

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KEY MESSAGES:
  • Warming and drying trend through Sunday; cool/cold valley lows with patchy frost.
  • Increased westerly winds on Monday-Tuesday
  • Low confidence for unsettled weather next weekend

Visible satellite imagery this afternoon is pretty clear over the Northern Rockies, with just some high clouds streaming over the Idaho Panhandle and northwest Montana. A ridge of high pressure will continue to build through Sunday, keeping daytime high temperatures about 10-15 degrees above normal...