Severe Thunderstorms in the Northern Plains and Upper Midwest; Critical Fire Weather in the West; Dangerous Heat in the Central and Eastern U.S.

Severe thunderstorms are likely today across the northern Plains and into the upper Mississippi Valley. Gusty winds and dry conditions will result in widespread critical fire weather through Saturday across parts of the Four Corners region and the Great Basin. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Read More >

Current conditions at

Monticello Regional Airport (KMXO)

Lat: 42.22°NLon: 91.16°WElev: 827ft.

Fair

70°F

21°C

Humidity 100%
Wind Speed S 12 G 21 mph
Barometer 29.89 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 20 Jun 11:35 am CDT
Extended Forecast for

3 Miles NNW Onslow IA

Heat Advisory June 21, 12:00pm until June 23, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Today

    Today: Showers and thunderstorms likely before 2pm, then isolated showers between 2pm and 4pm.  Cloudy, then gradually becoming mostly sunny, with a high near 85. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 60%.

    High: 85 °F

    T-storms
    Likely and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 76. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 76 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Saturday

    Saturday: Sunny and hot, with a high near 95. Heat index values as high as 103. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph.

    High: 95 °F

    Hot and
    Breezy

  • Saturday Night

    Saturday Night: Clear, with a low around 76. Breezy, with a south wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 76 °F

    Clear and
    Breezy then
    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 96. Breezy.

    High: 96 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers after 1pm.  Sunny and hot, with a high near 95.

    High: 95 °F

    Sunny then
    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

    Low: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm.  Mostly sunny, with a high near 91. Chance of precipitation is 50%.

    High: 91 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely before 2pm, then isolated showers between 2pm and 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 85. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Tonight
Mostly clear, with a low around 76. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday
Sunny and hot, with a high near 95. Heat index values as high as 103. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph.
Saturday Night
Clear, with a low around 76. Breezy, with a south wind 15 to 20 mph, with gusts as high as 25 mph.
Sunday
Sunny and hot, with a high near 96. Breezy.
Sunday Night
Mostly clear, with a low around 75.
Monday
A 30 percent chance of showers after 1pm. Sunny and hot, with a high near 95.
Monday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 91. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 90. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Onslow IA
 42.14°N 91.04°W (Elev. 814 ft)
11:32 am CDT Jun 20, 2025
11am CDT Jun 20, 2025-6pm CDT Jun 26, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database