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

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 >

Hazardous Weather Conditions

Current conditions at

Mount Pleasant, Mount Pleasant Municipal Airport (KMPZ)

Lat: 40.95°NLon: 91.51°WElev: 735ft.

Overcast

68°F

20°C

Humidity 88%
Wind Speed NE 10 mph
Barometer 30.21 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 18 Sep 11:50 am CDT
Extended Forecast for

New London IA

  • This Afternoon

    This Afternoon: Mostly cloudy, then gradually becoming sunny, with a high near 79. Southeast wind around 10 mph.

    High: 79 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms after 3am. Increasing clouds, with a low around 69. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 84. South wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 84 °F

    Showers
    Likely then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 65. Northeast wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    Showers
    Likely then
    Showers

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 1pm. High near 74. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 74 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.

    Low: 57 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: Showers likely. Cloudy, with a high near 64. Chance of precipitation is 70%.

    High: 64 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly cloudy, then gradually becoming sunny, with a high near 79. Southeast wind around 10 mph.
Tonight
A 30 percent chance of showers and thunderstorms after 3am. Increasing clouds, with a low around 69. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Showers and thunderstorms likely before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 84. South wind 5 to 10 mph. Chance of precipitation is 60%.
Saturday Night
Showers and possibly a thunderstorm. Low around 65. Northeast wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers, with thunderstorms also possible after 1pm. High near 74. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Monday
Showers likely. Cloudy, with a high near 64. Chance of precipitation is 70%.
Monday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 53.
Tuesday
Mostly cloudy, with a high near 62.
Tuesday Night
Mostly cloudy, with a low around 48.
Wednesday
Partly sunny, with a high near 66.
Wednesday Night
Mostly cloudy, with a low around 51.
Thursday
Partly sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
New London IA
 40.92°N 91.4°W (Elev. 758 ft)
Last Update:
11:46 am CDT Sep 18, 2026
Forecast Valid:
12pm CDT Sep 18, 2026-6pm CDT Sep 24, 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