Hazardous Weather Conditions
Current conditions at
Mason City Municipal Airport (KMCW)
Lat: 43.15°NLon: 93.33°WElev: 1188ft.
Mostly Cloudy
77°F
25°C
| Humidity | 94% |
| Wind Speed | Calm |
| Barometer | 29.92 in (1011.8 mb) |
| Dewpoint | 75°F (24°C) |
| Visibility | 7.00 mi |
| Heat Index | 78°F (26°C) |
| Last update | 26 Jul 12:53 am CDT |
Extended Forecast for
Thornton IA
Extreme Heat Watch July 26, 09:00pm until July 27, 10:00pm
Heat Advisory July 26, 01:47am until July 26, 12:00pm
Extreme Heat Warning July 26, 12:00pm until July 26, 09:00pm
NOW until 12:00pm Sun
Heat Advisory
Overnight
Low: 74 °F
Severe
ThunderstormsSunday
High: 93 °F
Partly Sunny
Sunday Night
Low: 76 °F
Partly Cloudy
then Slight
Chance
T-stormsMonday
High: 93 °F
Sunny
Monday Night
Low: 69 °F
Partly Cloudy
Tuesday
High: 87 °F
Mostly Sunny
Tuesday Night
Low: 66 °F
Mostly Clear
Wednesday
High: 88 °F
Sunny
Detailed Forecast
Overnight
Showers likely and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms between 3am and 4am, then a slight chance of showers after 4am. Some of the storms could be severe. Mostly cloudy, with a low around 74. South wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Partly sunny, with a high near 93. Heat index values as high as 112. Southwest wind 6 to 10 mph.
Sunday Night
A slight chance of showers and thunderstorms between 3am and 4am. Partly cloudy, with a low around 76. South wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Monday
Sunny, with a high near 93. Heat index values as high as 102. West southwest wind 8 to 11 mph becoming northwest in the afternoon.
Monday Night
Partly cloudy, with a low around 69. North northwest wind 5 to 10 mph becoming light north northeast after midnight.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 66.
Thursday
Partly sunny, with a high near 86.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Friday
A 40 percent chance of showers. Mostly sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 64.
Saturday
Sunny, with a high near 84.
Additional Forecasts and Information
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Point Forecast:
Thornton IA
42.95°N 93.37°W
42.95°N 93.37°W
1:26 am CDT Jul 26, 2026
1am CDT Jul 26, 2026-6pm CDT Aug 1, 2026
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