Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >

Hazardous Weather Conditions

Current conditions at

Waterloo, Waterloo Municipal Airport (KALO)

Lat: 42.55°NLon: 92.4°WElev: 873ft.

Fair

71°F

22°C

Humidity 100%
Wind Speed NE 5 mph
Barometer 29.97 in (1014.3 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 27 Jul 12:54 am CDT
Extended Forecast for

4 Miles NW Waverly IA

  • Overnight

    Overnight: Patchy fog after 2am.  Otherwise, partly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Patchy Fog

  • Sunday

    Sunday: Widespread dense fog, mainly before 8am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 89. Heat index values as high as 100. Calm wind becoming south 5 to 9 mph in the morning.

    High: 89 °F

    Dense Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms after 1am.  Mostly clear, with a low around 73. South wind around 8 mph.

    Low: 73 °F

    Mostly Clear
    then Chance
    T-storms

  • Monday

    Monday: A slight chance of thunderstorms before 7am.  Sunny, with a high near 93. Heat index values as high as 111. South southwest wind 6 to 8 mph becoming west in the afternoon.  Chance of precipitation is 10%.

    High: 93 °F

    Slight Chance
    T-storms then
    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 71. Southwest wind around 6 mph becoming northeast after midnight.

    Low: 71 °F

    Mostly Clear
    then Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 89. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, mainly after 1am.  Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 78.

    High: 78 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 69. Calm wind.
Sunday
Widespread dense fog, mainly before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 89. Heat index values as high as 100. Calm wind becoming south 5 to 9 mph in the morning.
Sunday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73. South wind around 8 mph.
Monday
A slight chance of thunderstorms before 7am. Sunny, with a high near 93. Heat index values as high as 111. South southwest wind 6 to 8 mph becoming west in the afternoon. Chance of precipitation is 10%.
Monday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. Southwest wind around 6 mph becoming northeast after midnight.
Tuesday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 75.
Friday Night
Mostly cloudy, with a low around 56.
Saturday
Partly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Waverly IA
 42.77°N 92.52°W
10:50 pm CDT Jul 26, 2025
1am CDT Jul 27, 2025-6pm CDT Aug 2, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database