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

Hazardous Weather Conditions

Current conditions at

Clyde A. Thomas Regional Airport (KSYM)

Lat: 38.22°NLon: 83.59°WElev: 1047ft.

Mostly Cloudy

63°F

17°C

Humidity 100%
Wind Speed N 5 mph
Barometer 30.09 in
Dewpoint 63°F (17°C)
Visibility 8.00 mi
Last update 25 May 7:35 am EDT
Extended Forecast for

Denniston KY

  • Memorial Day

    Memorial Day: Patchy drizzle before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 75. Calm wind becoming north northeast around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 75 °F

    Patchy
    Drizzle and
    Areas Fog
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms, then a chance of showers after 10pm. Cloudy, with a low around 64. Calm wind. Chance of precipitation is 30%.

    Low: 64 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 1pm. High near 75. Calm wind. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 11am. High near 75. Light west southwest wind. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Showers

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A 10 percent chance of showers before 8am. Mostly sunny, with a high near 80.

    High: 80 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

Memorial Day
Patchy drizzle before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 75. Calm wind becoming north northeast around 5 mph in the afternoon. Chance of precipitation is 20%.
Tonight
A slight chance of showers and thunderstorms, then a chance of showers after 10pm. Cloudy, with a low around 64. Calm wind. Chance of precipitation is 30%.
Tuesday
Showers, with thunderstorms also possible after 1pm. High near 75. Calm wind. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers, with thunderstorms also possible after 11am. High near 75. Light west southwest wind. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 64.
Thursday
A 10 percent chance of showers before 8am. Mostly sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Mostly sunny, with a high near 77.
Friday Night
A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 59.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 72.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 57.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Denniston KY
 37.93°N 83.54°W (Elev. 1142 ft)
Last Update:
7:41 am EDT May 25, 2026
Forecast Valid:
7am EDT May 25, 2026-6pm EDT May 31, 2026
 
Forecast Discussion
 
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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