I-15 Weather Conditions and Forecasts

2026-06-14 Roadnow

I-15 Wednesday 2026-06-17 weather conditions

• detailI-15 Montana: Sunny, 77°F
• detailI-15 Idaho: Sunny and Breezy, 84°F
• detailI-15 Utah: Sunny, 93°F
• detailI-15 Arizona: Hot, 103°F
• detailI-15 Nevada: Hot, 102°F
• detailI-15 California: Mostly Clear, 84°F

I-15 7 day weather forecast