I-15 Weather Conditions and Forecasts

2025-10-14 Roadnow

I-15 current weather conditions

• detailI-15 Montana: Overcast, 37°F
• detailI-15 Idaho: Overcast, 55°F
• detailI-15 Utah: Rain, 63°F
• detailI-15 Arizona: Mostly Cloudy, 66°F
• detailI-15 Nevada: Mostly Cloudy, 64°F
• detailI-15 California: Overcast, 57°F

I-15 7 day weather forecast