I-15 Weather Conditions and Forecasts

2026-03-19 Roadnow

I-15 Sunday Night 2026-03-22 weather conditions

• detailI-15 Montana: Partly Cloudy, 47°F
• detailI-15 Idaho: Partly Cloudy, 55°F
• detailI-15 Utah: Partly Cloudy, 64°F
• detailI-15 Arizona: Mostly Clear, 92°F
• detailI-15 Nevada: Mostly Clear, 91°F
• detailI-15 California: Mostly Clear, 95°F

I-15 7 day weather forecast