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

Tropical Storm Edouard to Impact the Northwest Gulf Coast; Heat Expands Eastward

Tropical Storm Edouard will bring tropical storm to hurricane conditions, heavy rainfall, flash and some river flooding, and storm surge to portions of Upper Texas and southwestern Louisiana coasts into Wednesday. Severe thunderstorms are possible in the Central Plains and Mid-Atlantic. Hot and humid conditions will expand from the Central Plains into the Ohio Valley and Mid-Atlantic. Read More >

Hazardous Weather Conditions

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Overcast

68°F

20°C

Humidity 100%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 1 Sep 8:15 am EDT
Extended Forecast for

Great Valley NY

  • Today

    Today: A chance of showers, mainly before 11am. Cloudy through mid morning, then gradual clearing, with a high near 84. West wind around 8 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 84 °F

    Chance
    Showers then
    Mostly Sunny

  • Tonight

    Tonight: A chance of thunderstorms after 5am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Partly Cloudy
    then Chance
    T-storms and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 85. Calm wind becoming west around 6 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 65. Light and variable wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    T-storms

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 79. West wind 3 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 60. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 76. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 76 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

Detailed Forecast

Today
A chance of showers, mainly before 11am. Cloudy through mid morning, then gradual clearing, with a high near 84. West wind around 8 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A chance of thunderstorms after 5am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 85. Calm wind becoming west around 6 mph in the morning. 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 possibly a thunderstorm. Low around 65. Light and variable wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 79. West wind 3 to 8 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
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 60. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Partly sunny, with a high near 76. Calm wind becoming northwest around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 56. Calm wind.
Saturday
Mostly sunny, with a high near 73.
Saturday Night
Mostly clear, with a low around 52.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 54.
Labor Day
Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Great Valley NY
 42.21°N 78.6°W (Elev. 1558 ft)
Last Update:
7:57 am EDT Sep 1, 2026
Forecast Valid:
8am EDT Sep 1, 2026-6pm EDT Sep 7, 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