I-15 Weather Conditions and Forecasts

2026-02-26 Roadnow

I-15 Saturday 2026-02-28 weather conditions

• detailI-15 Montana: Mostly Sunny, 53°F
• detailI-15 Idaho: Slight Chance Rain, 54°F
• detailI-15 Utah: Mostly Cloudy, 59°F
• detailI-15 Arizona: Mostly Cloudy, 79°F
• detailI-15 Nevada: Mostly Sunny, 77°F
• detailI-15 California: Partly Cloudy, 76°F

I-15 7 day weather forecast