Severe Weather Threats Across the Plains; Dangerous Heat and Wildfire Concerns for the West; Watching the Tropics

Severe thunderstorms are expected across the Central Plains accompanied by damaging wind gusts and large hail. In addition, heavy rainfall may lead to instances of flash flooding from the Plains and mid-Atlantic regions. The heavy rainfall threat continues across Florida and across the northern Gulf as we monitor a tropical disturbance tracking westward. Critical fire weather for the Great Basin. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

84°F

29°C

Humidity	59%
Wind Speed	S 20 G 26 mph
Barometer	29.97 in (1013.4 mb)
Dewpoint	68°F (20°C)
Visibility	10.00 mi
Heat Index	87°F (31°C)
Last update	15 Jul 12:53 pm CDT

More Information:

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

Extended Forecast for

Thornton IA

This Afternoon
High: 86 °F
Sunny
Tonight
Low: 67 °F
Mostly Clear
then Chance
T-storms
Wednesday
High: 78 °F
Chance
T-storms then
Showers
Wednesday Night
Low: 54 °F
Chance
Showers
Thursday
High: 71 °F
Partly Sunny
Thursday Night
Low: 54 °F
Partly Cloudy
Friday
High: 76 °F
Mostly Sunny
Friday Night
Low: 63 °F
Chance
Showers then
Showers
Likely
Saturday
High: 80 °F
Chance
T-storms

Detailed Forecast

This Afternoon

Sunny, with a high near 86. South wind 10 to 14 mph, with gusts as high as 18 mph.

Tonight

A 30 percent chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 67. South wind around 7 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 78. South wind 5 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

Wednesday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. North wind around 10 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday

Partly sunny, with a high near 71. North wind 9 to 11 mph.

Thursday Night

Partly cloudy, with a low around 54.

Friday

Mostly sunny, with a high near 76.

Friday Night

A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.

Saturday

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80.

Saturday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.