I-80 weather conditions near Johnston, Iowa

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Mostly Cloudy 70°F 2025-06-18T10:15:00-05:00
• Today 2025-06-18, Chance T-storms. A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. Northeast wind 6 to 9 mph becoming north northwest in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
• Tonight 2025-06-18, Chance T-storms then Mostly Clear. A 50 percent chance of showers and thunderstorms, mainly before 9pm. Partly cloudy, with a low around 62. West northwest wind 3 to 8 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
• Juneteenth 2025-06-19, Sunny. Sunny, with a high near 87. West wind 5 to 7 mph.
• Thursday Night 2025-06-19, Mostly Clear. Mostly clear, with a low around 70. South wind 6 to 8 mph.
• Friday 2025-06-20, Sunny then Sunny and Breezy. Sunny, with a high near 94. Breezy, with a south wind 9 to 18 mph, with gusts as high as 29 mph.
• Friday Night 2025-06-20, Mostly Clear and Breezy. Mostly clear, with a low around 79. Breezy.
• Saturday 2025-06-21, Hot and Breezy. Sunny and hot, with a high near 97. Breezy.
• Saturday Night 2025-06-21, Clear and Breezy. Clear, with a low around 78. Breezy.
• Sunday 2025-06-22, Sunny and Windy. Sunny, with a high near 96. Windy.
• Sunday Night 2025-06-22, Mostly Clear and Breezy then Mostly Clear. Mostly clear, with a low around 76. Breezy.
• Monday 2025-06-23, Sunny then Chance T-storms. A 30 percent chance of showers and thunderstorms. Sunny, with a high near 94.
• Monday Night 2025-06-23, Chance T-storms. A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
• Tuesday 2025-06-24, Chance Showers then Chance T-storms. A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.