I-15 Weather Conditions and Forecasts

2025-11-18 Roadnow

I-15 Saturday Night 2025-11-22 weather conditions

• detailI-15 Montana: Chance Rain/Snow, 28°F
• detailI-15 Idaho: Mostly Clear, 33°F
• detailI-15 Utah: Mostly Clear, 38°F
• detailI-15 Arizona: Mostly Clear, 48°F
• detailI-15 Nevada: Mostly Clear, 48°F
• detailI-15 California: Mostly Clear, 43°F

I-15 7 day weather forecast