I-15 Weather Conditions and Forecasts

2026-02-26 Roadnow

I-15 Sunday 2026-03-01 weather conditions

• detailI-15 Montana: Partly Sunny, 57°F
• detailI-15 Idaho: Chance Rain, 60°F
• detailI-15 Utah: Chance Rain, 63°F
• detailI-15 Arizona: Partly Cloudy, 80°F
• detailI-15 Nevada: Mostly Sunny, 79°F
• detailI-15 California: Mostly Clear, 80°F

I-15 7 day weather forecast