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Fort Harrison Aaf, MT Weather Forecast
Fort Harrison Aaf, MT Weather Forecast Date: 336 PM MDT Tue Aug 18 2026
The area/counties/county of: Helena Valley, including the city of Helena.or toggle through each period.
Tonight... Mostly cloudy early in the evening then clearing. A 20% chance of rain showers early in the evening. Lows in the lower 50s. West winds up to 10 mph shifting to the southwest after midnight.
Wednesday... Sunny. Highs in the mid 80s. South winds up to 5 mph shifting to the west in the afternoon.
Wednesday Night... Mostly clear. Lows in the lower 50s. Northwest winds up to 10 mph shifting to the southwest after midnight.
Thursday... Sunny. Highs around 90. South winds up to 5 mph shifting to the west in the afternoon.
Thursday Night... Mostly clear. Lows in the mid 50s. Northwest winds up to 10 mph.
Friday... Mostly sunny. Highs in the upper 80s.
Friday Night... Mostly cloudy with a 20% chance of rain showers. Lows in the upper 50s.
Saturday... Partly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of precipitation 40%.
Saturday Night... Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 50s. Chance of precipitation 40%.
Sunday... Mostly clear. Highs in the lower 80s. Lows in the lower 50s.
Monday... Mostly clear. Highs in the lower 80s. Lows in the lower 50s.
Monday Night... Partly cloudy. Lows in the lower 50s.
POP = Probability of Precipitation
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