Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

Overcast

65°F

18°C

Humidity 100%
Wind Speed SW 15 G 20 mph
Barometer 29.45 in (997.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 18 Jun 8:56 am EDT
Extended Forecast for

Leon NY

Wind Advisory until June 18, 08:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until June 18, 08:00pm

    NOW until 8:00pm Thu

    Wind Advisory

  • Today

    High: 71 °F

    Chance
    Showers and
    Breezy

  • Tonight

    Tonight: A chance of showers, mainly before 9pm.  Cloudy, then gradually becoming partly cloudy, with a low around 53. West wind 8 to 14 mph, with gusts as high as 26 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Chance
    Showers

  • Juneteenth

    Juneteenth: A slight chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 68. West wind 9 to 17 mph.  Chance of precipitation is 20%.

    High: 68 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 51. West wind 5 to 11 mph.

    Low: 51 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 68. West wind 6 to 11 mph.

    High: 68 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am.  Partly cloudy, with a low around 51. West wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 51 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 72. Calm wind becoming west around 6 mph in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers after 8pm.  Mostly cloudy, with a low around 53. Calm wind.  Chance of precipitation is 50%.

    Low: 53 °F

    Chance
    Showers

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 71. Breezy, with a west wind 20 to 23 mph, with gusts as high as 40 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers, mainly before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 53. West wind 8 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Juneteenth
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 68. West wind 9 to 17 mph. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 51. West wind 5 to 11 mph.
Saturday
Sunny, with a high near 68. West wind 6 to 11 mph.
Saturday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 51. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 72. Calm wind becoming west around 6 mph in the afternoon.
Sunday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 53. Calm wind. Chance of precipitation is 50%.
Monday
A chance of showers. Partly sunny, with a high near 70. Chance of precipitation is 50%.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 73.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Leon NY
 42.29°N 79.03°W (Elev. 1506 ft)
7:57 am EDT Jun 18, 2026
9am EDT Jun 18, 2026-6pm EDT Jun 24, 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