| NWS Forecast for: Madison River Valley Issued by: National Weather Service Great Falls, MT Last Update: 1232 PM MDT Sun Sep 20 2026 |  |
| Rest Of Today: Sunny. Highs in the mid 60s. North winds up to 5 mph. Tonight: Mostly clear. Lows 37 to 43. Northwest winds up to 5 mph shifting to the south after midnight. Monday: Sunny. Highs in the lower 70s. South winds up to 5 mph. Monday Night: Mostly clear. Lows in the lower 40s. South winds up to 10 mph. Tuesday: Mostly sunny. Highs in the lower 70s. South winds up to 10 mph. Tuesday Night: Mostly cloudy with a 20 percent chance of rain. Lows 44 to 50. Wednesday Through Thursday: Mostly clear. Highs in the mid 70s. Lows in the upper 40s. Thursday Night And Friday: Windy. Partly cloudy. Lows in the lower 50s. Highs in the mid 70s. Friday Night And Saturday: Breezy, cooler. Partly cloudy. A 20 percent chance of rain. Lows in the mid 40s. Highs in the mid 60s. | |
| Zone Forecast: Madison River Valley | |
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