Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Overcast

78°F

26°C

Humidity	87%
Wind Speed	E 5 mph
Barometer	30.01 in (1015.6 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	15 Aug 10:53 am CDT

More Information:

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

Extended Forecast for

Garwin IA

Today
High: 82 °F
Slight Chance
T-storms
Tonight
Low: 68 °F
Chance
T-storms then
Chance
Showers
Sunday
High: 81 °F
Partly Sunny
Sunday Night
Low: 60 °F
Mostly Clear
Monday
High: 81 °F
Sunny
Monday Night
Low: 62 °F
Mostly Clear
then Chance
Showers
Tuesday
High: 82 °F
Chance
Showers then
Chance
T-storms
Tuesday Night
Low: 63 °F
Showers
Wednesday
High: 77 °F
Partly Sunny

Detailed Forecast

Today

A 10 percent chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 82. Light and variable wind.

Tonight

A 40 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 68. Calm wind becoming west northwest around 5 mph after midnight. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday

Partly sunny, with a high near 81. North northwest wind 6 to 11 mph.

Sunday Night

Mostly clear, with a low around 60. Northwest wind 5 to 8 mph.

Monday

Sunny, with a high near 81. Light and variable wind.

Monday Night

A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.

Tuesday Night

Showers and possibly a thunderstorm. Low around 63. Chance of precipitation is 80%.

Wednesday

Partly sunny, with a high near 77.

Wednesday Night

Partly cloudy, with a low around 56.

Thursday

Mostly sunny, with a high near 75.

Thursday Night

A 30 percent chance of showers. Partly cloudy, with a low around 57.