Severe Thunderstorms and Heavy Rain Across the Central US and Central Appalachians

Severe thunderstorms producing damaging winds, hail and possibly a few tornadoes are expected across parts of the central Plains and the Missouri Valley. Heavy rainfall and flash flooding is also expected in the area. Thunderstorms and heavy rain may also bring additional flooding impacts to the central Appalachians. High temperatures and critical fire weather conditions expected in the Southwest. Read More >

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Overcast

70°F

21°C

Humidity 100%
Wind Speed S 3 mph
Barometer 29.97 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 17 Jun 3:15 pm EDT
Extended Forecast for

Delevan NY

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms.  Mostly cloudy, with a high near 75. Southwest wind around 8 mph.  Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 4am, then a slight chance of showers between 4am and 5am, then a slight chance of showers and thunderstorms after 5am.  Mostly cloudy, with a low around 66. South wind around 7 mph.  Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am, then a chance of showers and thunderstorms after 11am.  Partly sunny, with a high near 79. Southwest wind 5 to 7 mph.  Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 66. South wind 5 to 8 mph.  Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Chance
    T-storms

  • Juneteenth

    Juneteenth: A chance of showers and thunderstorms.  Mostly cloudy, with a high near 74. West wind around 11 mph, with gusts as high as 22 mph.  Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers before 2am.  Mostly cloudy, with a low around 55. West wind 5 to 7 mph.  Chance of precipitation is 20%.

    Low: 55 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 75. West wind 5 to 8 mph.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61. Southwest wind around 5 mph.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Mostly cloudy, with a high near 75. Southwest wind around 8 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 4am, then a slight chance of showers between 4am and 5am, then a slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 66. South wind around 7 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 79. Southwest wind 5 to 7 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. South wind 5 to 8 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Juneteenth
A chance of showers and thunderstorms. Mostly cloudy, with a high near 74. West wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A slight chance of showers before 2am. Mostly cloudy, with a low around 55. West wind 5 to 7 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 75. West wind 5 to 8 mph.
Friday Night
Partly cloudy, with a low around 61. Southwest wind around 5 mph.
Saturday
Partly sunny, with a high near 83.
Saturday Night
A chance of showers. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 87.
Sunday Night
Mostly clear, with a low around 71.
Monday
Sunny, with a high near 89.
Monday Night
Mostly clear, with a low around 71.
Tuesday
Sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Delevan NY
 42.48°N 78.46°W (Elev. 1542 ft)
1:36 pm EDT Jun 17, 2025
3pm EDT Jun 17, 2025-6pm EDT Jun 24, 2025
 
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Additional Resources

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