| NWS Forecast for: Helena Valley Issued by: National Weather Service Great Falls, MT Last Update: 337 PM MDT Sat Jun 27 2026 | |
| Tonight: Chance of rain showers and slight chance of thunderstorms early in the evening, then rain showers late in the evening. Rain after midnight. Lows in the mid 40s. West winds 5 to 15 mph. Gusts up to 30 mph after midnight. Chance of precipitation near 100 percent. Sunday: Cooler, rain. Highs in the lower 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 near 100 percent. Monday: Rain in the morning, then rain showers and slight chance of thunderstorms in the afternoon. Highs in the mid 50s. Southwest winds 10 to 15 mph with gusts to around 35 mph. Chance of precipitation near 100 percent. Monday Night: Mostly cloudy. Rain in the evening, then chance of rain after midnight. Lows in the lower 40s. West winds 5 to 15 mph with gusts to around 30 mph. Chance of rain 80 percent. Tuesday And Tuesday Night: Warmer. Mostly cloudy. A 40 percent chance of thunderstorms. Highs in the upper 60s. Lows in the mid 40s. Wednesday: Partly sunny. Slight chance of rain showers in the morning, then chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of precipitation 50 percent. Wednesday Night And Thursday: Partly cloudy. A 20 percent chance of thunderstorms. Lows in the mid 40s. Highs in the mid 70s. Thursday Night: Mostly cloudy with a 30 percent chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 40s. Friday: Partly sunny. A 50 percent chance of thunderstorms in the afternoon. Highs in the mid 70s. Friday Night: Mostly cloudy with a 40 percent chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 40s. Independence Day: Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the mid 70s. | |
| Zone Forecast: Helena Valley | |
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