Areas of Severe Thunderstorms and Heat

Scattered severe thunderstorms and excessive rainfall are possible today in the Mid Atlantic, posing a risk for damaging winds and isolated flash flooding. Extreme Heat Warnings are in effect today for northeast Texas into southern Oklahoma and Arkansas. Extreme Heat Warnings are also in effect for the Desert Southwest today into Sunday. Read More >

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

A Few Clouds

62°F

17°C

Humidity 84%
Wind Speed E 3 mph
Barometer 30.07 in (1018.3 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 20 Aug 11:56 am EDT
Extended Forecast for

4 Miles SSW Sinclairville NY

  • This Afternoon

    This Afternoon: A slight chance of rain before 1pm.  Mostly cloudy, then gradually becoming sunny, with a high near 74. Northeast wind around 6 mph.  Chance of precipitation is 20%.

    High: 74 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: Mostly clear, with a low around 52. North wind 5 to 9 mph becoming calm  in the evening.

    Low: 52 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 78. East wind 3 to 5 mph.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. Light and variable wind becoming southeast around 5 mph after midnight.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 78. Southeast wind around 7 mph becoming southwest in the afternoon.  Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Mostly Sunny
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am.  Low around 57. Southwest wind around 6 mph.  Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Showers

  • Sunday

    Sunday: Showers likely, mainly after 8am.  Mostly cloudy, with a high near 72. West wind 8 to 13 mph.  Chance of precipitation is 60%.

    High: 72 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers.  Mostly cloudy, with a low around 53. West wind 5 to 9 mph.  Chance of precipitation is 40%.

    Low: 53 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers.  Partly sunny, with a high near 70. Chance of precipitation is 30%.

    High: 70 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A slight chance of rain before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 74. Northeast wind around 6 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 52. North wind 5 to 9 mph becoming calm in the evening.
Friday
Sunny, with a high near 78. East wind 3 to 5 mph.
Friday Night
Mostly clear, with a low around 59. Light and variable wind becoming southeast around 5 mph after midnight.
Saturday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 78. Southeast wind around 7 mph becoming southwest in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 57. Southwest wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers likely, mainly after 8am. Mostly cloudy, with a high near 72. West wind 8 to 13 mph. Chance of precipitation is 60%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 53. West wind 5 to 9 mph. Chance of precipitation is 40%.
Monday
A chance of showers. Partly sunny, with a high near 70. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Sinclairville NY
 42.2°N 79.31°W (Elev. 1506 ft)
11:46 am EDT Aug 20, 2026
12pm EDT Aug 20, 2026-6pm EDT Aug 26, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database