Current conditions at

Chillicothe Ross County Airport (KRZT)

Lat: 39.44°NLon: 83.02°WElev: 725ft.

Overcast

70°F

21°C

Humidity 100%
Wind Speed Calm
Barometer 29.91 in
Dewpoint 70°F (21°C)
Visibility 3.00 mi
Last update 20 Aug 5:42 am EDT
Extended Forecast for

Williamsport OH

Flood Watch August 20, 06:20am until August 20, 10:00am
Click here for hazard details and duration
...
  •  
    Flood Watch August 20, 06:20am until August 20, 10:00am

    NOW until 10:00am Thu

    Flood Watch

  • Today

    High: 79 °F

    Heavy Rain
    then Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Light northeast wind.

    Low: 63 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80. Light northeast wind.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm.  Mostly sunny, with a high near 80. Light west wind increasing to 6 to 11 mph in the afternoon.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 8pm.  Partly cloudy, with a low around 60. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Showers
    Likely then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Today
Showers and thunderstorms likely, mainly before 4pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 79. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Partly cloudy, with a low around 63. Light northeast wind.
Friday
Mostly sunny, with a high near 80. Light northeast wind.
Friday Night
Mostly clear, with a low around 63. Calm wind.
Saturday
A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 80. Light west wind increasing to 6 to 11 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 60. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 56.
Monday
Sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Williamsport OH
 39.56°N 83.1°W (Elev. 702 ft)
4:00 am EDT Aug 20, 2026
6am EDT Aug 20, 2026-6pm EDT Aug 26, 2026
 
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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