Local Forecast

Johnston, IA Weather Forecast & Alerts

Current conditions, 5-day forecast, active weather alerts for Johnston, IA

Active Alerts 2 active

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Hour-by-Hour  Current Observation

Thursday 9:05 AM CDTThursday 9:05 AM

°F °C
Regional Observations →
69°F

Light Rain and Fog/Mist

  • 82° / 68° High / Low
  • 69° Feels Like
  • 0% Chance of Rain

Wind

7 mph

SSE

UV Index

5

Moderate

Humidity

100%

Dew 69°F

Sun

6:21 AM · 8:17 PM

Rise · Set

Source: AMES (KAMW). Slider scrubs the next 12 hours.

5-Day Outlook

Through Monday

Local Radar →

Thursday

82° 68°

Thunderstorms

Overnight: Thunderstorms Likely

Detailed forecast

Thursday

Showers and thunderstorms before 10am, then a chance of showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy. High near 81, with temperatures falling to around 79 in the afternoon. East wind 7 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

Night

A chance of showers and thunderstorms before 3am, then showers and thunderstorms likely between 3am and 5am, then a chance of showers and thunderstorms. Mostly cloudy. Low around 68, with temperatures rising to around 70 overnight. East wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

Friday

84° 71°

Thunderstorms Likely

Overnight: Chance of Thunderstorms

Detailed forecast

Friday

A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely between 7am and 9am, then a slight chance of showers and thunderstorms between 9am and 10am, then showers and thunderstorms likely between 11am and 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 83. East southeast wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Night

A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 71. East southeast wind 6 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.

Saturday

86° 69°

Chance of Thunderstorms

Overnight: Chance of Thunderstorms

Detailed forecast

Saturday

Showers and thunderstorms likely before 7am, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.

Night

A chance of showers and thunderstorms before 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 70%.

Sunday

82° 64°

Chance of Thunderstorms

Overnight: Isolated T-storm

Detailed forecast

Sunday

Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.

Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64.

Monday

78° 62°

Partly Sunny

Overnight: Partly Cloudy

Detailed forecast

Monday

A slight chance of rain showers before 7am. Mostly sunny, with a high near 78.

Night

A slight chance of rain showers after 1am. Partly cloudy, with a low around 63.

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