I-15 Weather Conditions and Forecasts

2025-09-14 Roadnow

I-15 current weather conditions

• detailI-15 Montana: Partly Cloudy, 64°F
• detailI-15 Idaho: Clear, 57°F
• detailI-15 Utah: Clear, 61°F
• detailI-15 Arizona: Clear, 79°F
• detailI-15 Nevada: Clear, 82°F
• detailI-15 California: Clear, 77°F

I-15 7 day weather forecast