| NWS Forecast for: Big Lost Highlands/Copper Basin Issued by: National Weather Service Pocatello, ID Last Update: 1222 PM MDT Tue May 19 2026 |  |
| Tonight: Mostly cloudy with isolated snow showers in the evening...then partly cloudy after midnight. Lows 27 to 36. Wednesday: Partly sunny. Highs 54 to 64. Wednesday Night: Decreasing clouds. Scattered snow showers and isolated rain showers. Lows 30 to 40. Thursday: Mostly sunny with isolated snow showers. Highs 58 to 68. Thursday Night: Partly cloudy. Lows 32 to 42. Friday And Friday Night: Partly cloudy. Highs 61 to 71. Lows 33 to 43. Saturday: Sunny. Highs 65 to 75. Saturday Night: Partly cloudy. Lows 36 to 46. Sunday: Sunny. Highs 67 to 77. Sunday Night: Partly cloudy. Lows 38 to 48. Memorial Day: Sunny, breezy. Highs 66 to 76. Monday Night: Partly cloudy. Breezy. Lows 35 to 45. Tuesday: Sunny. Highs 61 to 71. | |
| Zone Forecast: Big Lost Highlands/Copper Basin | |
Visit your local NWS office at: https://www.weather.gov/pih |