I-15 Weather Conditions and Forecasts

2026-03-19 Roadnow

I-15 Friday Night 2026-03-20 weather conditions

• detailI-15 Montana: Partly Cloudy, 54°F
• detailI-15 Idaho: Mostly Clear, 63°F
• detailI-15 Utah: Mostly Clear, 72°F
• detailI-15 Arizona: Mostly Clear, 95°F
• detailI-15 Nevada: Mostly Clear, 94°F
• detailI-15 California: Clear, 93°F

I-15 7 day weather forecast