I-15 Weather Conditions and Forecasts

2026-10-22 Roadnow

I-15 current weather conditions

• detailI-15 Montana: Mostly Cloudy, 51°F
• detailI-15 Idaho: Clear, 66°F
• detailI-15 Utah: Rain, 56°F
• detailI-15 Arizona: NA, 60°F
• detailI-15 Nevada: Clear, 73°F
• detailI-15 California: Mostly Cloudy, 66°F

I-15 7 day weather forecast