I-15 Weather Conditions and Forecasts

2026-06-19 Roadnow

I-15 Tuesday Night 2026-06-23 weather conditions

• detailI-15 Montana: Mostly Clear, 49°F
• detailI-15 Idaho: Clear, 55°F
• detailI-15 Utah: Clear, 63°F
• detailI-15 Arizona: Clear, 74°F
• detailI-15 Nevada: Clear, 77°F
• detailI-15 California: Clear, 58°F

I-15 7 day weather forecast