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

Hazardous Weather Conditions

Current conditions at

Monticello Regional Airport (KMXO)

Lat: 42.22°NLon: 91.16°WElev: 827ft.

Fair

N/A

Humidity NA
Wind Speed Vrbl 3 mph
Barometer 29.95 in
Dewpoint N/A
Visibility 10.00 mi
Last update 1 Sep 11:55 am CDT
Extended Forecast for

Monticello IA

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Southwest wind around 5 mph.

    High: 90 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Increasing clouds, with a low around 73. South wind around 5 mph becoming calm in the evening.

    Low: 73 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 91. Heat index values as high as 101. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 91 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 73. Southwest wind around 5 mph becoming calm.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90.

    High: 90 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Southwest wind around 5 mph.
Tonight
Increasing clouds, with a low around 73. South wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 91. Heat index values as high as 101. Light southwest wind increasing to 5 to 10 mph in the morning.
Wednesday Night
Mostly clear, with a low around 73. Southwest wind around 5 mph becoming calm.
Thursday
A 40 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90.
Thursday Night
Partly cloudy, with a low around 73.
Friday
Mostly sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 70.
Saturday
Mostly sunny, with a high near 91.
Saturday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 69.
Sunday
A 30 percent chance of showers. Mostly sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 65.
Labor Day
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Monticello IA
 42.25°N 91.18°W (Elev. 804 ft)
Last Update:
9:11 am CDT Sep 1, 2026
Forecast Valid:
12pm CDT Sep 1, 2026-6pm CDT Sep 7, 2026
 
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