I-15 Weather Conditions and Forecasts

2026-01-01 Roadnow

I-15 New Year's Day 2026-01-01 weather conditions

• detailI-15 Montana: Mostly Cloudy, 40°F
• detailI-15 Idaho: Rain/Snow, 42°F
• detailI-15 Utah: Rain Likely, 48°F
• detailI-15 Arizona: Rain Likely, 54°F
• detailI-15 Nevada: Showers Likely, 45°F
• detailI-15 California: Showers, 65°F

I-15 7 day weather forecast