Weather Alert
Johnson County Weather Warning NWS WEATHER ALERT FOR THE JOHNSON COUNTY, IA AREA - Issued: 247 AM CDT Fri Sep 25 2026 Johnson County Weather Warning

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Johnson County, IA Weather - Hour by Hour Forecast

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Johnson County, IA Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Overcast. Temperature is 64°F18°C, dew point 61°F16°C, humidity 89%. Wind direction is E at 3 mph5 km/h with visibility of 10 mi16 km. Barometric pressure is 30.23 in1024 mb.
Tonight - Mostly cloudy. Lows in the mid 50s. East winds 5 to 10 mph... Full Forecast
Saturday - Mostly cloudy. A chance of showers in the morning, then showers likely in the afternoon. Highs in the lower 60s. Southeast winds 5.. Full Forecast

Johnson County Hourly Weather

24 Hour Forecast Scroll
Fri, Sep 25
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Johnson County, IA Hourly Weather - Cloudy - 10:00 PM Johnson County, IA Hourly Weather - Cloudy - 11:00 PM Johnson County, IA Hourly Weather - Cloudy - 12:00 AM Johnson County, IA Hourly Weather - Cloudy - 1:00 AM Johnson County, IA Hourly Weather - Cloudy - 2:00 AM Johnson County, IA Hourly Weather - Cloudy - 3:00 AM Johnson County, IA Hourly Weather - Cloudy - 4:00 AM Johnson County, IA Hourly Weather - Cloudy - 5:00 AM Johnson County, IA Hourly Weather - Cloudy - 6:00 AM Johnson County, IA Hourly Weather - Cloudy - 7:00 AM Johnson County, IA Hourly Weather - Cloudy - 8:00 AM Johnson County, IA Hourly Weather - Cloudy - 9:00 AM Johnson County, IA Hourly Weather - Cloudy - 10:00 AM Johnson County, IA Hourly Weather - Cloudy - 11:00 AM Johnson County, IA Hourly Weather - Cloudy - 12:00 PM Johnson County, IA Hourly Weather - Cloudy - 1:00 PM Johnson County, IA Hourly Weather - Cloudy - 2:00 PM Johnson County, IA Hourly Weather - Cloudy - 3:00 PM Johnson County, IA Hourly Weather - Cloudy - 4:00 PM Johnson County, IA Hourly Weather - Cloudy - 5:00 PM Johnson County, IA Hourly Weather - Cloudy - 6:00 PM Johnson County, IA Hourly Weather - Cloudy - 7:00 PM Johnson County, IA Hourly Weather - Cloudy - 8:00 PM Johnson County, IA Hourly Weather - Mostly Cloudy - 9:00 PM
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Mostly Cloudy
57°F14°C 57°F14°C 56°F13°C 56°F13°C 56°F13°C 56°F13°C 56°F13°C 56°F13°C 55°F13°C 55°F13°C 57°F14°C 60°F16°C 62°F17°C 64°F18°C 66°F19°C 68°F20°C 69°F21°C 69°F21°C 70°F21°C 69°F21°C 67°F19°C 66°F19°C 64°F18°C 63°F17°C
- - - - - - - - - - Rain Rain Rain Rain Rain Rain - - - - - - - -
17% 17% 17% 17% 20% 20% 20% 20% 20% 20% 21% 21% 21% 21% 21% 21% 18% 18% 18% 18% 18% 18% 14% 14%
51°F11°C 51°F11°C 51°F11°C 51°F11°C 51°F11°C 51°F11°C 51°F11°C 51°F11°C 51°F11°C 51°F11°C 52°F11°C 52°F11°C 53°F12°C 53°F12°C 54°F12°C 54°F12°C 54°F12°C 54°F12°C 54°F12°C 54°F12°C 53°F12°C 53°F12°C 53°F12°C 53°F12°C
80% 80% 83% 83% 83% 83% 83% 83% 86% 86% 83% 75% 72% 67% 65% 61% 59% 59% 57% 59% 61% 63% 67% 70%
ESE ESE E E E E E E ESE ESE ESE ESE ESE ESE SE SE SE ESE ESE E E E E E
3 mph 3 mph 3 mph 3 mph 3 mph 2 mph 2 mph 2 mph 3 mph 3 mph 3 mph 4 mph 4 mph 4 mph 6 mph 6 mph 6 mph 5 mph 5 mph 5 mph 5 mph 5 mph 5 mph 4 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (CDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
Wind Speed
Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KIOW model statistics.

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Prob Precip % = Probability of Precipitation.

Johnson County 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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