I-15 Weather Conditions and Forecasts

2026-05-31 Roadnow

I-15 Monday Night 2026-06-01 weather conditions

• detailI-15 Montana: Chance Showers, 56°F
• detailI-15 Idaho: Mostly Clear, 81°F
• detailI-15 Utah: Mostly Clear, 92°F
• detailI-15 Arizona: Mostly Clear, 102°F
• detailI-15 Nevada: Clear, 103°F
• detailI-15 California: Mostly Clear, 90°F

I-15 7 day weather forecast