Johnson County, IA Weather Forecast

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Johnson County, IA Weather Forecast

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Johnson County IA weather  - Clear - 45°F
Clear
45°F
Updated 3:28 pm
Feels Like 38°F
Humidity 43%
Wind N 0 mph
Barometer  30.31 in
Dew Point 24°F
Johnson County IA weather  - Clear - 7°C
Clear
7°C
Updated 3:28 pm
Feels Like 3°C
Humidity 43%
Wind N 0 km/h
Barometer  102.6 kPa
Dew Point -4°C

Johnson County Weather Forecast

THIS AFTERNOON TONIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT
Johnson County, IA Weather - This Afternoon Sunny Johnson County, IA Weather - Tonight Partly Cloudy Johnson County, IA Weather - Sunday Sunny Johnson County, IA Weather - Sunday Night Mostly Clear Johnson County, IA Weather - Monday Sunny Johnson County, IA Weather - Monday Night Mostly Clear Johnson County, IA Weather - Tuesday Mostly Clear Johnson County, IA Weather - Tuesday Night Mostly Clear Johnson County, IA Weather - Wednesday Mostly Sunny Johnson County, IA Weather - Wednesday Night Mostly Cloudy Johnson County, IA Weather - Thursday Mostly Cloudy Johnson County, IA Weather - Thursday Night Partly Cloudy
Sunny Partly Cloudy Sunny Mostly Clear Sunny Mostly Clear Mostly Clear Mostly Clear Mostly Sunny Mostly Cloudy Mostly Cloudy Partly Cloudy
Hi: 45°FHi: 7°C
Lo: 25°FLo: -4°C Hi: 49°FHi: 9°C
Lo: 29°FLo: -2°C Hi: 51°FHi: 11°C
Hi: 55°FHi: 13°C
Lo: 35°FLo: 2°C
Hi: 55°FHi: 13°C
Lo: 35°FLo: 2°C
Lo: 39°FLo: 4°C Hi: 59°FHi: 15°C
Hi: 61°FHi: 16°C
Lo: 49°FLo: 9°C
Hi: 61°FHi: 16°C
Lo: 49°FLo: 9°C
Lo: 45°FLo: 7°C
POP = Probability of Precipitation.
Weather Outlook Updated: 126 PM CST Sat Nov 14 2026 Johnson County, IA Weather - WeatherWorld.com

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Issued: 134 PM CST Sat Nov 14 2026

Key Messages

  • No hazards are expected in the week ahead as cooler than normal weather gives way to a gradual warming trend through next week.

Aviation

/18Z TAFS THROUGH 18Z SUNDAY/... Issued at 1117 AM CST Sat Nov 14 2026

High pressure is forecast to sit across the region centered along the Mississippi River Valley through the TAF period. This will bring continued clear skies/unlimited ceilings and variable wind direction with speeds under 4 knots through the forecast period. A few high cloud may dri...