I-15 Weather Conditions and Forecasts

2025-12-31 Roadnow

I-15 Friday 2026-01-02 weather conditions

• detailI-15 Montana: Mostly Cloudy, 46°F
• detailI-15 Idaho: Mostly Cloudy, 39°F
• detailI-15 Utah: Chance Rain then Partly Sunny, 46°F
• detailI-15 Arizona: Partly Sunny, 63°F
• detailI-15 Nevada: Partly Sunny, 63°F
• detailI-15 California: Partly Sunny, 64°F

I-15 7 day weather forecast