I-15 Weather Conditions and Forecasts

2026-01-01 Roadnow

I-15 Tonight 2026-01-01 weather conditions

• detailI-15 Montana: Chance Rain, 48°F
• detailI-15 Idaho: Rain, 44°F
• detailI-15 Utah: Rain, 48°F
• detailI-15 Arizona: Chance Showers, 60°F
• detailI-15 Nevada: Mostly Cloudy, 60°F
• detailI-15 California: Mostly Clear, 56°F

I-15 7 day weather forecast