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Several Rounds of Severe Storms & Heavy Rain Possible Through At Least Saturday

Hazardous Weather Conditions

Current conditions at

Ankeny Regional Airport (KIKV)

Lat: 41.69°NLon: 93.57°WElev: 886ft.

Mostly Cloudy

79°F

26°C

Humidity	89%
Wind Speed	NE 8 mph
Barometer	29.88 in
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	83°F (28°C)
Last update	13 Aug 7:55 pm CDT

More Information:

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

Extended Forecast for

Johnston IA

Flood Watch August 13, 08:06pm until August 15, 10:00am

Click here for hazard details and duration

Flood Watch

Flood Watch August 13, 08:06pm until August 15, 10:00am
NOW until 10:00am Sat
Flood Watch
Tonight
Low: 68 °F
Heavy Rain
Friday
High: 86 °F
Showers
Likely then
Chance
T-storms
Friday Night
Low: 72 °F
Chance
T-storms then
Showers
Likely
Saturday
High: 87 °F
Decreasing
Clouds
Saturday Night
Low: 69 °F
Chance
T-storms then
Showers
Likely
Sunday
High: 81 °F
Chance
T-storms
Sunday Night
Low: 63 °F
Partly Cloudy
Monday
High: 80 °F
Mostly Sunny

Detailed Forecast

Tonight

Showers and thunderstorms likely, mainly between midnight and 1am, then showers likely and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 68. East wind around 9 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

Friday

Showers and thunderstorms likely, mainly before 10am. Mostly cloudy, with a high near 86. East wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night

A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 3am. Mostly cloudy, with a low around 72. East southeast wind 5 to 9 mph becoming west after midnight. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Saturday

Cloudy, then gradually becoming mostly sunny, with a high near 87. Heat index values as high as 100. West northwest wind 3 to 6 mph.

Saturday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Light northwest wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday Night

Partly cloudy, with a low around 63.

Monday

Mostly sunny, with a high near 80.

Monday Night

Partly cloudy, with a low around 63.

Tuesday

Mostly sunny, with a high near 83.

Tuesday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.

Wednesday

A 30 percent chance of showers. Partly sunny, with a high near 81.