I-15 Weather Conditions and Forecasts

2025-10-26 Roadnow

I-15 current weather conditions

• detailI-15 Montana: Partly Cloudy, 36°F
• detailI-15 Idaho: Mostly Cloudy, 40°F
• detailI-15 Utah: Clear, 64°F
• detailI-15 Arizona: Clear, 53°F
• detailI-15 Nevada: Clear, 72°F
• detailI-15 California: Fog, 54°F

I-15 7 day weather forecast