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

Tropical Moisture Will Bring Heavy to Excessive Rainfall with Possible Flooding This Week

Tropical moisture from the remnants of Odalys and Hurricane Polo will surge over the southwest into the central U.S. this week with several days of heavy to excessive rainfall which may bring limited to considerable flooding. Flood Watches have been issued through Wednesday in the southwest U.S. and moderate risk outlooks have been issued today through Thursday. Read More >

Current conditions at

Monticello Regional Airport (KMXO)

Lat: 42.22°NLon: 91.16°WElev: 827ft.

Overcast

66°F

19°C

Humidity 83%
Wind Speed E 3 mph
Barometer 30.02 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 28 Sep 7:35 pm CDT
Extended Forecast for

Lost Nation IA

  • Tonight

    Tonight: Mostly clear, with a low around 51. Calm wind.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77. Calm wind becoming south around 5 mph in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 4am. Mostly cloudy, with a low around 64. South wind around 5 mph.

    Low: 64 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 1pm. High near 72. South wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 72 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers. Low around 65. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 65 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 70. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    High: 70 °F

    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 51. Calm wind.
Tuesday
Mostly sunny, with a high near 77. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers after 4am. Mostly cloudy, with a low around 64. South wind around 5 mph.
Wednesday
Showers, with thunderstorms also possible after 1pm. High near 72. South wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers. Low around 65. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday
Showers and possibly a thunderstorm. High near 70. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 53.
Friday
Mostly sunny, with a high near 65.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Partly sunny, with a high near 66.
Saturday Night
Mostly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lost Nation IA
 41.96°N 90.81°W (Elev. 722 ft)
Last Update:
7:41 pm CDT Sep 28, 2026
Forecast Valid:
7pm CDT Sep 28, 2026-6pm CDT Oct 5, 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