I-80 weather conditions near Johnston, Iowa

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Mostly Cloudy 48°F 2025-12-09T20:55:00-06:00
• Tonight 2025-12-09, Windy. Mostly Cloudy then Patchy Blowing Snow. Patchy blowing snow after 2am. Mostly cloudy, with a low around 27. Windy, with a west northwest wind 16 to 26 mph, with gusts as high as 55 mph.
• Wednesday 2025-12-10, Cloudy and Windy. Cloudy, with a temperature falling to around 26 by 9am. Windy, with a northwest wind 20 to 25 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 46 mph.
• Wednesday Night 2025-12-10, Mostly Cloudy. Mostly cloudy, with a low around 16. Northwest wind 5 to 9 mph becoming calm after midnight.
• Thursday 2025-12-11, Mostly Cloudy then Chance Snow. A 30 percent chance of snow after noon. Cloudy, with a high near 29. Calm wind becoming south southeast around 6 mph in the morning. New snow accumulation of less than a half inch possible.
• Thursday Night 2025-12-11, Chance Snow. A 30 percent chance of snow, mainly before midnight. Cloudy, with a low around 21. East southeast wind 6 to 8 mph becoming north after midnight. Little or no snow accumulation expected.
• Friday 2025-12-12, Mostly Cloudy. Mostly cloudy, with a high near 26.
• Friday Night 2025-12-12, Cloudy. Cloudy, with a low around 8.
• Saturday 2025-12-13, Chance Snow. A 40 percent chance of snow. Mostly cloudy, with a high near 11.
• Saturday Night 2025-12-13, Partly Cloudy. Partly cloudy, with a low around -7.
• Sunday 2025-12-14, Cold. Sunny and cold, with a high near 10.
• Sunday Night 2025-12-14, Partly Cloudy. Partly cloudy, with a low around 1.
• Monday 2025-12-15, Mostly Sunny. Mostly sunny, with a high near 28.
• Monday Night 2025-12-15, Partly Cloudy. Partly cloudy, with a low around 11.
• Tuesday 2025-12-16, Partly Sunny. Partly sunny, with a high near 32.