I-15 Weather Conditions and Forecasts

2026-06-15 Roadnow

I-15 Tonight 2026-06-14 weather conditions

• detailI-15 Montana: Mostly Clear, 80°F
• detailI-15 Idaho: Clear, 85°F
• detailI-15 Utah: Mostly Clear, 92°F
• detailI-15 Arizona: Mostly Clear, 108°F
• detailI-15 Nevada: Clear, 108°F
• detailI-15 California: Clear, 94°F

I-15 7 day weather forecast