I-15 Weather Conditions and Forecasts

2025-11-17 Roadnow

I-15 current weather conditions

• detailI-15 Montana: Mostly Cloudy, 39°F
• detailI-15 Idaho: Overcast, 48°F
• detailI-15 Utah: Overcast, 48°F
• detailI-15 Arizona: Overcast, 54°F
• detailI-15 Nevada: Clear, 59°F
• detailI-15 California: Overcast, 54°F

I-15 7 day weather forecast