| NWS Forecast for: Lost River Valleys Issued by: National Weather Service Pocatello, ID Last Update: 147 AM MDT Tue May 19 2026 |  |
| Today: Mostly sunny. Isolated rain showers and snow showers in the afternoon. Highs 53 to 63. Light and variable winds... Becoming southwest around 10 mph in the afternoon. Tonight: Mostly cloudy with isolated rain showers in the evening...then partly cloudy after midnight. Lows 31 to 38. West winds around 10 mph in the evening...becoming light and variable. Wednesday: Mostly sunny in the morning...then mostly cloudy with isolated rain showers in the afternoon. Highs 57 to 67. Light and variable winds...becoming west around 10 mph in the afternoon. Wednesday Night: Mostly cloudy with scattered rain showers. Lows 35 to 42. Northwest winds 10 to 15 mph. Thursday: Mostly sunny with isolated rain showers and snow showers. Highs 58 to 68. North winds 10 to 15 mph. Thursday Night Through Friday Night: Partly cloudy. Lows 35 to 44. Highs 63 to 73. Saturday: Sunny. Highs 68 to 78. Saturday Night: Partly cloudy. Lows 39 to 46. Sunday: Sunny. Highs 71 to 81. Sunday Night: Partly cloudy. Lows 41 to 49. Memorial Day: Sunny, breezy. Highs 71 to 81. | |
| Zone Forecast: Lost River Valleys | |
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