I-15 Weather Conditions and Forecasts

2025-05-13 Roadnow

I-15 Sunday 2025-05-18 weather conditions

• detailI-15 Montana: Showers, 40°F
• detailI-15 Idaho: Rain, 41°F
• detailI-15 Utah: Showers Likely, 50°F
• detailI-15 Arizona: Chance Showers and Breezy, 66°F
• detailI-15 Nevada: Chance Showers, 67°F
• detailI-15 California: Cloudy, 53°F

I-15 7 day weather forecast