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

Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. Read More >

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

Overcast

64°F

18°C

Humidity 58%
Wind Speed W 9 G 18 mph
Barometer 29.94 in (1013.8 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 20 Jun 10:56 am EDT
Extended Forecast for

Sherman NY

  • Today

    Today: A chance of showers before 2pm, then a slight chance of showers and thunderstorms between 2pm and 4pm. Partly sunny, with a high near 68. West wind around 11 mph. Chance of precipitation is 30%.

    High: 68 °F

    Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers and thunderstorms, then a chance of showers after 3am. Mostly cloudy, with a low around 52. West wind 3 to 6 mph. Chance of precipitation is 30%.

    Low: 52 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 71. West wind 3 to 7 mph.

    High: 71 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 54. Calm wind becoming southeast around 6 mph after midnight. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 54 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers, mainly before 2pm. High near 70. East wind 9 to 11 mph becoming north in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 70 °F

    Showers

  • Monday Night

    Monday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 53. North wind 3 to 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 70. Northwest wind 5 to 8 mph.

    High: 70 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53. West wind around 5 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

Detailed Forecast

Today
A chance of showers before 2pm, then a slight chance of showers and thunderstorms between 2pm and 4pm. Partly sunny, with a high near 68. West wind around 11 mph. Chance of precipitation is 30%.
Tonight
A slight chance of showers and thunderstorms, then a chance of showers after 3am. Mostly cloudy, with a low around 52. West wind 3 to 6 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 71. West wind 3 to 7 mph.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 54. Calm wind becoming southeast around 6 mph after midnight. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Showers, mainly before 2pm. High near 70. East wind 9 to 11 mph becoming north in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 53. North wind 3 to 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Sunny, with a high near 70. Northwest wind 5 to 8 mph.
Tuesday Night
Mostly clear, with a low around 53. West wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 73.
Wednesday Night
A chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 74. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.
Friday
A chance of showers. Partly sunny, with a high near 73. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sherman NY
 42.16°N 79.58°W (Elev. 1581 ft)
Last Update:
9:57 am EDT Jun 20, 2026
Forecast Valid:
11am EDT Jun 20, 2026-6pm EDT Jun 26, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation