I-15 Weather Conditions and Forecasts

2025-11-20 Roadnow

I-15 Saturday 2025-11-22 weather conditions

• detailI-15 Montana: Mostly Sunny, 47°F
• detailI-15 Idaho: Partly Sunny, 49°F
• detailI-15 Utah: Partly Cloudy, 53°F
• detailI-15 Arizona: Partly Sunny, 65°F
• detailI-15 Nevada: Partly Sunny, 65°F
• detailI-15 California: Mostly Sunny, 70°F

I-15 7 day weather forecast