I-15 Weather Conditions and Forecasts

2026-10-22 Roadnow

I-15 Sunday Night 2026-10-25 weather conditions

• detailI-15 Montana: Partly Cloudy, 42°F
• detailI-15 Idaho: Mostly Clear, 57°F
• detailI-15 Utah: Partly Cloudy, 64°F
• detailI-15 Arizona: Sunny, 75°F
• detailI-15 Nevada: Mostly Clear, 74°F
• detailI-15 California: Mostly Clear, 75°F

I-15 7 day weather forecast