Lala Impacting Hawaii; Flash Flooding Risks; Excessive Heat

Lala will continue to impact Hawaii through the weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Thunderstorms, heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians and the mid-Atlantic through today. Record heat continues for areas of the Mississippi Valley into the Southeast. Read More >

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Mostly Cloudy

75°F

24°C

Humidity	66%
Wind Speed	N 14 mph
Barometer	30.07 in (1017.0 mb)
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Last update	16 Aug 2:53 pm CDT

More Information:

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

Extended Forecast for

Grafton IA

This Afternoon
High: 78 °F
Partly Sunny
Tonight
Low: 57 °F
Mostly Clear
Monday
High: 79 °F
Sunny
Monday Night
Low: 63 °F
Chance
T-storms
Tuesday
High: 77 °F
Chance
Showers then
Showers
Likely
Tuesday Night
Low: 57 °F
Chance
T-storms then
Chance
Showers
Wednesday
High: 74 °F
Mostly Sunny
Wednesday Night
Low: 55 °F
Partly Cloudy
Thursday
High: 76 °F
Mostly Sunny

Detailed Forecast

This Afternoon

Partly sunny, with a high near 78. North northwest wind around 10 mph.

Tonight

Mostly clear, with a low around 57. Northwest wind 3 to 8 mph.

Monday

Sunny, with a high near 79. West northwest wind 3 to 7 mph.

Monday Night

A chance of showers and thunderstorms. Increasing clouds, with a low around 63. Southwest wind 5 to 7 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday

A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 77. West northwest wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday Night

A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 57. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday

Mostly sunny, with a high near 74.

Wednesday Night

Partly cloudy, with a low around 55.

Thursday

Mostly sunny, with a high near 76.

Thursday Night

Mostly clear, with a low around 58.

Friday

A 30 percent chance of showers. Mostly sunny, with a high near 78.

Friday Night

Partly cloudy, with a low around 59.