Dangerous Heat Builds and Expands; Critical Fire Weather for the Southwest; Severe Thunderstorms for Plains and Midwest

Dangerous to record breaking heat will build across the center of the nation and slowly build eastward this week. Wildfire conditions remain critical for the Southwest and portions of the Great Basin through Monday. For the northern Plains and upper Midwest, severe thunderstorms with the potential for large to very large hail and severe winds are the primary hazards. Read More >

Hazardous Weather Conditions

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

Overcast

67°F

19°C

Humidity 100%
Wind Speed Calm
Barometer 30.10 in (1018.6 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 29 Jun 3:56 am EDT
Extended Forecast for

3 Miles WNW Clymer NY

  • Today

    Today: Mostly sunny, with a high near 85. Southeast wind around 6 mph becoming calm  in the afternoon.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 68. Calm wind becoming south around 5 mph after midnight.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 11am, then a chance of showers between 11am and 2pm.  Partly sunny and hot, with a high near 91. Heat index values as high as 99. South wind 6 to 13 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 74. Southwest wind 3 to 5 mph.

    Low: 74 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 92. West wind 7 to 10 mph.

    High: 92 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 73. Southwest wind 3 to 5 mph.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 92. West wind 5 to 9 mph.

    High: 92 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 71. Southwest wind 3 to 5 mph.

    Low: 71 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 85. Southeast wind around 6 mph becoming calm in the afternoon.
Tonight
Partly cloudy, with a low around 68. Calm wind becoming south around 5 mph after midnight.
Tuesday
A chance of showers and thunderstorms before 11am, then a chance of showers between 11am and 2pm. Partly sunny and hot, with a high near 91. Heat index values as high as 99. South wind 6 to 13 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Partly cloudy, with a low around 74. Southwest wind 3 to 5 mph.
Wednesday
Sunny and hot, with a high near 92. West wind 7 to 10 mph.
Wednesday Night
Mostly clear, with a low around 73. Southwest wind 3 to 5 mph.
Thursday
Sunny and hot, with a high near 92. West wind 5 to 9 mph.
Thursday Night
Mostly clear, with a low around 71. Southwest wind 3 to 5 mph.
Friday
Sunny, with a high near 88.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.
Independence Day
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Clymer NY
 42.06°N 79.74°W (Elev. 1608 ft)
3:57 am EDT Jun 29, 2026
4am EDT Jun 29, 2026-6pm EDT Jul 5, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database