I-15 Weather Conditions and Forecasts

2025-04-20 Roadnow

I-15 Monday 2025-04-21 weather conditions

• detailI-15 Montana: Rain/Snow and Breezy, 52°F
• detailI-15 Idaho: Chance Showers, 64°F
• detailI-15 Utah: Chance Showers then Sunny, 63°F
• detailI-15 Arizona: Mostly Clear, 88°F
• detailI-15 Nevada: Mostly Clear, 89°F
• detailI-15 California: Partly Cloudy, 80°F

I-15 7 day weather forecast