National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Strong to Severe Thunderstorms in the East; Heat in the Central and Western U.S.

Strong to potentially severe thunderstorms with damaging wind gusts are forecast Thursday from parts of New England into the Mid Atlantic and Carolinas. Significant heat will expand across the West and Central Plains through Friday, potentially breaking daily high temperature records. Dangerous heat will then build into the Eastern U.S. this weekend through much of next week. Read More >

Hazardous Weather Conditions

Current conditions at

Monticello Regional Airport (KMXO)

Lat: 42.22°NLon: 91.16°WElev: 827ft.

Fair

73°F

23°C

Humidity 78%
Wind Speed S 3 mph
Barometer 29.92 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 19 Jun 8:55 pm CDT
Extended Forecast for

Hopkinton IA

Extreme Heat Watch June 21, 12:00pm until June 22, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Increasing clouds, with a low around 65. South wind around 5 mph.

    Low: 65 °F

    Clear then
    Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms likely, mainly before 11am. Some of the storms could produce heavy rainfall. Cloudy through mid morning, then gradual clearing, with a high near 89. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 89 °F

    Breezy. Heavy
    Rain then
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 76. South wind around 15 mph, with gusts as high as 30 mph.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 95. Heat index values as high as 104. Breezy, with a south wind around 20 mph, with gusts as high as 35 mph.

    High: 95 °F

    Hot and
    Breezy

  • Saturday Night

    Saturday Night: Clear, with a low around 76.

    Low: 76 °F

    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 95. Breezy.

    High: 95 °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 40 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 95.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

    Low: 71 °F

    Showers
    Likely

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Increasing clouds, with a low around 65. South wind around 5 mph.
Friday
Showers and thunderstorms likely, mainly before 11am. Some of the storms could produce heavy rainfall. Cloudy through mid morning, then gradual clearing, with a high near 89. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Friday Night
Mostly clear, with a low around 76. South wind around 15 mph, with gusts as high as 30 mph.
Saturday
Sunny and hot, with a high near 95. Heat index values as high as 104. Breezy, with a south wind around 20 mph, with gusts as high as 35 mph.
Saturday Night
Clear, with a low around 76.
Sunday
Sunny and hot, with a high near 95. Breezy.
Sunday Night
Mostly clear, with a low around 75.
Monday
A 40 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 95.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 90. Chance of precipitation is 60%.
Tuesday Night
Showers and thunderstorms likely. 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 89. Chance of precipitation is 70%.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Thursday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 85. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hopkinton IA
 42.34°N 91.23°W (Elev. 883 ft)
Last Update:
8:31 pm CDT Jun 19, 2025
Forecast Valid:
9pm CDT Jun 19, 2025-6pm CDT Jun 26, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation