| NWS Forecast for: Helena Valley Issued by: National Weather Service Great Falls, MT Last Update: 336 AM MDT Sun Apr 12 2026 | |
| Today: Mostly sunny until late afternoon then becoming mostly cloudy. Slight chance of thunderstorms early in the afternoon. Chance of rain showers and slight chance of thunderstorms late in the afternoon. Highs in the lower 60s. East winds up to 10 mph. Chance of precipitation 50 percent. Tonight: Rain showers and slight chance of thunderstorms in the evening, then chance of rain after midnight. Lows in the upper 30s. Northwest winds up to 10 mph shifting to the southwest after midnight. Chance of precipitation 90 percent. Monday: Rain likely in the morning, then rain in the afternoon. Highs in the mid 50s. South winds up to 5 mph shifting to the west 5 to 15 mph in the afternoon. Chance of rain 90 percent. Monday Night: Mostly cloudy with a 20 percent chance of rain in the evening, then partly cloudy after midnight. Lows in the mid 30s. West winds 5 to 15 mph. Tuesday: Mostly sunny. Highs in the upper 50s. Southwest winds 5 to 10 mph shifting to the west 10 to 20 mph with gusts to around 35 mph in the afternoon. Tuesday Night: Partly cloudy in the evening, then mostly cloudy with a 20 percent chance of rain after midnight. Lows in the mid 30s. Wednesday: Mostly cloudy. Chance of rain in the morning, then rain in the afternoon. Highs in the mid 50s. Chance of rain 80 percent. Wednesday Night: Rain and snow in the evening, then snow likely after midnight. Lows in the upper 20s. Chance of precipitation 80 percent. Thursday: Colder. Snow likely. Highs in the lower 40s. Chance of snow 70 percent. Thursday Night: Mostly cloudy. A 20 percent chance of snow in the evening. Lows in the lower 20s. Friday: Mostly sunny. Slight chance of snow in the morning, then chance of snow in the afternoon. Highs in the upper 40s. Chance of snow 30 percent. Friday Night: Partly cloudy. Lows in the mid 20s. Saturday: Mostly sunny. A 20 percent chance of snow in the afternoon. Highs in the mid 50s. | |
| Zone Forecast: Helena Valley | |
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