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Lost River, Idaho

Current conditions and the National Weather Service 7-day forecast for Lost River, Idaho — temperature, rain chance, wind, radar and active alerts.

Saturday Aug 29 night: a low around 39°F. Sunday Aug 30: a high near 73°F and a low around 36°F. The wettest day looks like Tuesday Sep 1, near 0.03 in. Highs over the period run 72°F to 79°F.

National Weather Service forecast for Lost River, Idaho
DayHighLowPrecip
Saturday Aug 2939°
Sunday Aug 3073°36°
Monday Aug 3179°42°
Tuesday Sep 177°41°0.03 in
Wednesday Sep 272°39°
Thursday Sep 372°38°
Friday Sep 473°40°
Saturday Sep 573°

NOAA NWS NDFD 2.5 km, run 2026-08-30 00:00 UTC · days are local time in America/Boise. The live page updates continuously.

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