I-15 Weather Conditions and Forecasts

2025-12-29 Roadnow

I-15 Thursday Night 2026-01-01 weather conditions

• detailI-15 Montana: Mostly Cloudy, 44°F
• detailI-15 Idaho: Chance Rain, 44°F
• detailI-15 Utah: Rain Likely, 49°F
• detailI-15 Arizona: Chance Showers, 62°F
• detailI-15 Nevada: Chance Showers, 62°F
• detailI-15 California: Chance Showers, 66°F

I-15 7 day weather forecast