Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Monticello Regional Airport (KMXO)

Lat: 42.22° N Lon: 91.16° W Elev: 827 ft.

Light Rain Fog/Mist

66°F

19°C

Humidity 100%
Wind Speed Vrbl 5 mph
Barometer 29.99 in
Dewpoint 66°F (19°C)
Visibility 4.00 mi
Last update 19 Sep 5:55 am CDT
Detailed forecast for

Delaware County

Today
Patchy fog this morning. Occasional showers and thunderstorms this morning, then showers likely with a chance of thunderstorms this afternoon. Some thunderstorms may produce heavy rainfall. Locally heavy rainfall possible this morning. Highs in the upper 70s. Southeast winds 5 to 10 mph, becoming south this afternoon. Chance of rain near 100 percent.
Tonight
Cloudy. Showers with a chance of thunderstorms in the evening, then a chance of showers after midnight. Some thunderstorms may produce heavy rainfall in the evening. Humid with lows around 60. Northwest winds 5 to 10 mph, becoming north after midnight. Chance of rain 80 percent.
Sunday
Mostly cloudy. A chance of showers in the morning. Not as warm with highs in the mid 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.
Sunday Night
Mostly cloudy. A chance of showers after midnight. Lows in the lower 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.
Monday
Mostly cloudy with a 40 percent chance of showers. Highs in the lower 60s. Northeast winds around 15 mph with gusts up to 25 mph.
Monday Night
Mostly cloudy. A chance of showers after midnight. Lows in the upper 40s. Chance of rain 40 percent.
Tuesday
Partly sunny. Highs in the lower 60s.
Tuesday Night And Wednesday
Mostly clear. Lows in the mid 40s. Highs in the mid 60s.
Wednesday Night Through Friday
Partly cloudy. Lows around 50. Highs in the upper 60s.



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531 AM CDT Sat Sep 19 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database