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

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Mostly Cloudy

74°F

23°C

Humidity	97%
Wind Speed	W 6 mph
Barometer	30.02 in (1015.3 mb)
Dewpoint	73°F (23°C)
Visibility	8.00 mi
Last update	16 Aug 1:53 am CDT

More Information:

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

Extended Forecast for

4 Miles NW Grafton IA

Overnight
Low: 66 °F
Mostly Cloudy
Sunday
High: 77 °F
Partly Sunny
Sunday Night
Low: 57 °F
Mostly Clear
then Patchy
Fog
Monday
High: 80 °F
Patchy Fog
then Sunny
Monday Night
Low: 64 °F
Slight Chance
T-storms then
Chance
Showers
Tuesday
High: 78 °F
Mostly Cloudy
then Chance
T-storms
Tuesday Night
Low: 58 °F
Chance
T-storms then
Chance
Showers
Wednesday
High: 75 °F
Mostly Sunny
Wednesday Night
Low: 55 °F
Partly Cloudy

Detailed Forecast

Overnight

Mostly cloudy, with a low around 66. West wind 5 to 7 mph.

Sunday

Partly sunny, with a high near 77. North northwest wind 11 to 14 mph, with gusts as high as 21 mph.

Sunday Night

Patchy fog after 5am. Otherwise, mostly clear, with a low around 57. Northwest wind 3 to 8 mph.

Monday

Patchy fog before 7am. Otherwise, sunny, with a high near 80. Calm wind becoming west 5 to 7 mph in the afternoon.

Monday Night

A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 64. West southwest wind 5 to 7 mph. Chance of precipitation is 30%.

Tuesday

A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.

Wednesday

Mostly sunny, with a high near 75.

Wednesday Night

Partly cloudy, with a low around 55.

Thursday

Mostly sunny, with a high near 76.

Thursday Night

A 30 percent chance of showers. Partly cloudy, with a low around 59.

Friday

A 30 percent chance of showers. Mostly sunny, with a high near 79.