I-15 Weather Conditions and Forecasts

2026-06-14 Roadnow

I-15 Monday Night 2026-06-15 weather conditions

• detailI-15 Montana: Mostly Cloudy, 73°F
• detailI-15 Idaho: Mostly Cloudy, 86°F
• detailI-15 Utah: Mostly Clear, 95°F
• detailI-15 Arizona: Clear, 110°F
• detailI-15 Nevada: Clear, 110°F
• detailI-15 California: Clear, 92°F

I-15 7 day weather forecast