Severe Thunderstorms and Heavy Rainfall Across the Central Plains and Central Appalachians

Severe thunderstorms producing damaging winds, heavy rainfall, hail and possibly a few tornadoes will continue through tonight across portions of Kansas and Oklahoma. Heavy rainfall will persist across the Central Appalachians through tonight, potentially leading to areas of flooding. The severe weather and heavy rainfall threat will shift into the lower Great Lakes on Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Fog/Mist

N/A

Humidity NA
Wind Speed S 3 mph
Barometer 29.93 in
Dewpoint N/A
Visibility 2.50 mi
Last update 18 Jun 2:15 am EDT
Extended Forecast for

2 Miles NE Portville NY

  • Overnight

    Overnight: A slight chance of showers before 3am.  Patchy fog after 3am.  Otherwise, cloudy, with a low around 65. South wind around 5 mph.  Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm.  Patchy fog before 8am.  Otherwise, mostly cloudy, with a high near 82. Southwest wind 3 to 6 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am.  Mostly cloudy, with a low around 65. Calm wind becoming south 5 to 8 mph after midnight.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Showers
    Likely then
    Chance
    Showers

  • Juneteenth

    Juneteenth: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am.  Mostly cloudy, with a high near 75. Southwest wind 9 to 11 mph, with gusts as high as 23 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 55. Northwest wind 3 to 7 mph.

    Low: 55 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 78. West wind 3 to 8 mph.  Chance of precipitation is 20%.

    High: 78 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58. Light southwest wind.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 83. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 83 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A slight chance of showers before 3am. Patchy fog after 3am. Otherwise, cloudy, with a low around 65. South wind around 5 mph. Chance of precipitation is 20%.
Wednesday
Showers and thunderstorms likely, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 82. Southwest wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 65. Calm wind becoming south 5 to 8 mph after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Juneteenth
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Mostly cloudy, with a high near 75. Southwest wind 9 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Mostly cloudy, with a low around 55. Northwest wind 3 to 7 mph.
Friday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 78. West wind 3 to 8 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 58. Light southwest wind.
Saturday
Mostly sunny, with a high near 83. Calm wind becoming southwest 5 to 8 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 66.
Sunday
Mostly sunny and hot, with a high near 90.
Sunday Night
Mostly clear, with a low around 69.
Monday
Sunny and hot, with a high near 92.
Monday Night
Mostly clear, with a low around 69.
Tuesday
Sunny and hot, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NE Portville NY
 42.05°N 78.33°W (Elev. 2001 ft)
1:36 am EDT Jun 18, 2025
2am EDT Jun 18, 2025-6pm EDT Jun 24, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database