| NWS Forecast for: Helena Valley Issued by: National Weather Service Great Falls, MT Last Update: 452 AM MDT Sat Jun 27 2026 |  |
| Today: Chance of rain showers and slight chance of thunderstorms in the morning, then rain showers and chance of thunderstorms in the afternoon. Highs in the mid 60s. West winds up to 10 mph. Chance of precipitation 90 percent. Tonight: Rain showers likely and slight chance of thunderstorms in the evening, then rain after midnight. Lows in the lower 40s. West winds 5 to 15 mph. Gusts up to 35 mph after midnight. Chance of precipitation 90 percent. Sunday: Cooler, rain. Highs in the mid 50s. Southwest winds 5 to 15 mph with gusts to around 35 mph. Chance of rain near 100 percent. Sunday Night: Rain. Lows in the lower 40s. Southwest winds 10 to 15 mph with gusts to around 30 mph. Chance of rain 90 percent. Monday: Rain. Highs in the upper 50s. Southwest winds 5 to 15 mph with gusts to around 30 mph. Chance of rain near 100 percent. Monday Night: Mostly cloudy. Rain showers likely in the evening, then slight chance of rain showers after midnight. Lows in the lower 40s. Chance of showers 60 percent. Tuesday And Tuesday Night: Warmer. Partly cloudy. A 20 percent chance of thunderstorms. Highs in the upper 60s. Lows in the mid 40s. Wednesday: Partly sunny. A 50 percent chance of thunderstorms in the afternoon. Highs in the lower 70s. Wednesday Night: Partly cloudy. A 20 percent chance of thunderstorms in the evening. Lows in the mid 40s. Thursday: Mostly sunny. A 30 percent chance of thunderstorms in the afternoon. Highs in the upper 70s. Thursday Night: Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening. Lows in the upper 40s. Chance of precipitation 30 percent. Friday: Partly sunny. A 50 percent chance of thunderstorms in the afternoon. Highs in the upper 70s. | |
| Zone Forecast: Helena Valley | |
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