I-15 Weather Conditions and Forecasts

2025-04-18 Roadnow

I-15 current weather conditions

• detailI-15 Montana: Clear, 30°F
• detailI-15 Idaho: Mostly Cloudy, 36°F
• detailI-15 Utah: Partly Cloudy, 37°F
• detailI-15 Arizona: Clear, 54°F
• detailI-15 Nevada: Partly Cloudy, 68°F
• detailI-15 California: Overcast, 55°F

I-15 7 day weather forecast