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

79°F

26°C

Humidity 89%
Wind Speed NE 6 mph
Barometer 29.88 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 4 Sep 8:55 pm CDT
Extended Forecast for

Monticello IA

Heat Advisory September 4, 09:36pm until September 5, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 4, 09:36pm until September 5, 07:00pm

    NOW until 7:00pm Sat

    Heat Advisory

  • Tonight

    Low: 70 °F

    Mostly Clear

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, sunny, with a high near 88. Calm wind becoming northeast around 5 mph in the morning.

    High: 88 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 65. East wind around 5 mph.

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers. Partly sunny, with a high near 83. East wind around 5 mph.

    High: 83 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 70. Calm wind.
Saturday
Patchy fog before 8am. Otherwise, sunny, with a high near 88. Calm wind becoming northeast around 5 mph in the morning.
Saturday Night
Partly cloudy, with a low around 65. East wind around 5 mph.
Sunday
A 20 percent chance of showers. Partly sunny, with a high near 83. East wind around 5 mph.
Sunday Night
Partly cloudy, with a low around 62.
Labor Day
Mostly sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
Mostly sunny, with a high near 90.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 70. Chance of precipitation is 60%.
Wednesday
Mostly sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Mostly sunny, with a high near 82.
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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:
8:41 pm CDT Sep 4, 2026
Forecast Valid:
9pm CDT Sep 4, 2026-6pm CDT Sep 11, 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