I-15 Weather Conditions and Forecasts

2026-07-01 Roadnow

I-15 Thursday Night 2026-07-02 weather conditions

• detailI-15 Montana: Partly Cloudy, 86°F
• detailI-15 Idaho: Mostly Cloudy, 92°F
• detailI-15 Utah: Partly Cloudy, 100°F
• detailI-15 Arizona: Clear, 107°F
• detailI-15 Nevada: Clear, 106°F
• detailI-15 California: Mostly Clear, 92°F

I-15 7 day weather forecast