I-15 Weather Conditions and Forecasts

2026-03-19 Roadnow

I-15 Monday Night 2026-03-23 weather conditions

• detailI-15 Montana: Mostly Cloudy, 46°F
• detailI-15 Idaho: Mostly Cloudy, 52°F
• detailI-15 Utah: Mostly Cloudy, 54°F
• detailI-15 Arizona: Mostly Clear, 65°F
• detailI-15 Nevada: Mostly Clear, 67°F
• detailI-15 California: Mostly Clear, 62°F

I-15 7 day weather forecast