I-15 Weather Conditions and Forecasts

2026-05-08 Roadnow

I-15 Sunday 2026-05-10 weather conditions

• detailI-15 Montana: Mostly Sunny, 83°F
• detailI-15 Idaho: Sunny, 91°F
• detailI-15 Utah: Sunny, 97°F
• detailI-15 Arizona: Mostly Clear, 103°F
• detailI-15 Nevada: Sunny, 103°F
• detailI-15 California: Mostly Clear, 92°F

I-15 7 day weather forecast