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

Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Hazardous Weather Conditions

Current conditions at

Williamson-Sodus Airport (KSDC)

Lat: 43.23°NLon: 77.12°WElev: 424ft.

Fair

86°F

30°C

Humidity 40%
Wind Speed SE 3 mph
Barometer 30.20 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 10 Aug 11:35 am EDT
Extended Forecast for

Lyons NYSimilar City Names

  • Today

    Today: Sunny and hot, with a high near 91. South wind 5 to 7 mph.

    High: 91 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 65. South wind 3 to 5 mph.

    Low: 65 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 92. South wind around 6 mph.

    High: 92 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 68. Light south wind.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 93. Southwest wind around 6 mph.

    High: 93 °F

    Hot

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 69. Light south wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 87. Southwest wind 3 to 7 mph. Chance of precipitation is 50%.

    High: 87 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 65. Light west wind. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny and hot, with a high near 91. South wind 5 to 7 mph.
Tonight
Mostly clear, with a low around 65. South wind 3 to 5 mph.
Monday
Sunny and hot, with a high near 92. South wind around 6 mph.
Monday Night
Mostly clear, with a low around 68. Light south wind.
Tuesday
Sunny and hot, with a high near 93. Southwest wind around 6 mph.
Tuesday Night
A chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 69. Light south wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 87. Southwest wind 3 to 7 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 65. Light west wind. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 59.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 63.
Saturday
Sunny and hot, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Lyons NYSimilar City Names
 43.06°N 76.99°W (Elev. 404 ft)
Last Update:
10:36 am EDT Aug 10, 2025
Forecast Valid:
11am EDT Aug 10, 2025-6pm EDT Aug 16, 2025
 
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Additional Resources

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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