I-15 Weather Conditions and Forecasts

2026-02-26 Roadnow

I-15 Friday 2026-02-27 weather conditions

• detailI-15 Montana: Mostly Sunny and Breezy, 46°F
• detailI-15 Idaho: Mostly Sunny, 55°F
• detailI-15 Utah: Mostly Clear, 63°F
• detailI-15 Arizona: Mostly Clear, 86°F
• detailI-15 Nevada: Mostly Sunny, 87°F
• detailI-15 California: Mostly Clear, 90°F

I-15 7 day weather forecast