Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Ankeny Regional Airport (KIKV)

Lat: 41.69°NLon: 93.57°WElev: 886ft.

Fair

73°F

23°C

Humidity	89%
Wind Speed	Vrbl 7 mph
Barometer	30.01 in
Dewpoint	70°F (21°C)
Visibility	10.00 mi
Last update	18 Aug 10:55 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Johnston IA

Today
High: 79 °F
Chance
T-storms
Tonight
Low: 64 °F
Chance
T-storms then
Partly Cloudy
Wednesday
High: 79 °F
Decreasing
Clouds
Wednesday Night
Low: 62 °F
Slight Chance
T-storms then
Partly Cloudy
Thursday
High: 80 °F
Sunny
Thursday Night
Low: 64 °F
Mostly Clear
then Slight
Chance
T-storms
Friday
High: 83 °F
Slight Chance
T-storms
Friday Night
Low: 65 °F
Chance
T-storms
Saturday
High: 80 °F
Sunny

Detailed Forecast

Today

A 40 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 79. West southwest wind around 8 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 64. Light and variable wind. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday

Mostly cloudy, then gradually becoming sunny, with a high near 79. Calm wind becoming east northeast around 5 mph in the afternoon.

Wednesday Night

A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 62. Light east wind.

Thursday

Sunny, with a high near 80. Calm wind becoming south around 5 mph in the afternoon.

Thursday Night

A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 64.

Friday

A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 83.

Friday Night

A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly clear, with a low around 65.