I-15 Weather Conditions and Forecasts

2026-02-26 Roadnow

I-15 current weather conditions

• detailI-15 Montana: Clear, 36°F
• detailI-15 Idaho: Overcast, 40°F
• detailI-15 Utah: Partly Cloudy, 42°F
• detailI-15 Arizona: Clear, 54°F
• detailI-15 Nevada: Clear, 64°F
• detailI-15 California: Clear, 58°F

I-15 7 day weather forecast