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Custer County, ID Weather Forecast
Custer County, ID Weather Forecast Date: 216 PM MST Tue Nov 10 2026
The area/counties/county of: Lost River Valley, including: Howe, Arco, Mackay, Chilly, and Challis.or toggle through each period.
Tonight... Mostly clear. Lows 29 to 36. Southwest winds up to 10 mph in the evening...Becoming light and variable.
Veterans Day... Mostly sunny. Highs 50 to 59. Light and variable winds.
Wednesday Night... Increasing clouds. Lows 30 to 37. Light and variable winds...Becoming southeast up to 10 mph after midnight.
Thursday... Mostly sunny. Highs 49 to 59. Southeast winds up to 10 mph.
Thursday Night... Partly cloudy. Lows 28 to 35. Southeast winds up to 10 mph.
Friday... Mostly sunny. Highs 45 to 55.
Friday Night... Snow likely and a chance of rain. Lows 29 to 36.
Saturday... Mostly cloudy with a chance of rain and snow. Highs 38 to 48.
Saturday Night... Mostly cloudy with a slight chance of rain and snow. Lows 25 to 32.
Sunday... Mostly sunny with a slight chance of snow. Highs 40 to 50.
Sunday Night... Mostly cloudy with a chance of snow and a slight chance of rain. Lows 27 to 34.
Monday... Mostly cloudy with a chance of snow and rain. Highs 37 to 47. Lows 27 to 34.
POP = Probability of Precipitation
Custer County Radar Loop
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