I-15 Weather Conditions and Forecasts

2026-10-22 Roadnow

I-15 Saturday Night 2026-10-24 weather conditions

• detailI-15 Montana: Mostly Clear, 45°F
• detailI-15 Idaho: Mostly Clear, 54°F
• detailI-15 Utah: Mostly Sunny, 62°F
• detailI-15 Arizona: Sunny, 73°F
• detailI-15 Nevada: Sunny and Breezy, 73°F
• detailI-15 California: Sunny, 82°F

I-15 7 day weather forecast