Severe Thunderstorms in the Northern Plains and Upper Midwest; Critical Fire Weather in the West; Dangerous Heat in the Central and Eastern U.S.

Severe thunderstorms are likely today across the northern Plains and into the upper Mississippi Valley. Gusty winds and dry conditions will result in widespread critical fire weather through Saturday across parts of the Four Corners region and the Great Basin. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Read More >

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Mostly Cloudy

61°F

16°C

Humidity 100%
Wind Speed S 3 mph
Barometer 30.17 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 21 Jun 6:55 am EDT
Extended Forecast for

3 Miles ESE Great Valley NY

Heat Advisory June 22, 12:00pm until June 24, 06:00pm
Click here for hazard details and duration
Heat Advisory
  • Today

    Today: A slight chance of showers and thunderstorms before 8am.  Partly sunny, with a high near 83. Southwest wind 5 to 8 mph.  Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 71. South wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 71 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 90. Heat index values as high as 95. West wind 8 to 10 mph, with gusts as high as 21 mph.

    High: 90 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 72. Southwest wind 3 to 5 mph.

    Low: 72 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 92. West wind 5 to 7 mph.

    High: 92 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 70. Light southwest wind.

    Low: 70 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 90. West wind 5 to 7 mph.

    High: 90 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 67. Light west wind.

    Low: 67 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 85. Chance of precipitation is 50%.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
A slight chance of showers and thunderstorms before 8am. Partly sunny, with a high near 83. Southwest wind 5 to 8 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 71. South wind 8 to 10 mph, with gusts as high as 20 mph.
Sunday
Sunny and hot, with a high near 90. Heat index values as high as 95. West wind 8 to 10 mph, with gusts as high as 21 mph.
Sunday Night
Clear, with a low around 72. Southwest wind 3 to 5 mph.
Monday
Sunny and hot, with a high near 92. West wind 5 to 7 mph.
Monday Night
Mostly clear, with a low around 70. Light southwest wind.
Tuesday
Sunny and hot, with a high near 90. West wind 5 to 7 mph.
Tuesday Night
Mostly clear, with a low around 67. Light west wind.
Wednesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 83. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Great Valley NY
 42.2°N 78.54°W (Elev. 1647 ft)
4:36 am EDT Jun 21, 2025
7am EDT Jun 21, 2025-6pm EDT Jun 27, 2025
 
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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