Tracking Late Season Winter Storms; Unusual Early-Season Heat Wave in the Southwest

Heavy snow and high winds continue in the Great Lakes and Northeast. A moderate atmospheric river will continue to bring heavy precipitation to the Pacific Northwest and northern Rockies. A major winter storm will develop across the northern High Plains tonight into Saturday and rapidly strengthen as it moves into the Great Lakes on Sunday. Above-average temperatures expected in the Southwest. Read More >

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Light Snow

28°F

-2°C

Humidity 80%
Wind Speed SE 8 mph
Barometer 29.66 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 13 Mar 12:55 pm EDT
Extended Forecast for

Great Valley NY

Wind Advisory until March 14, 08:00am
Winter Weather Advisory March 13, 05:00pm until March 14, 08:00am
Click here for hazard details and duration
Wind Advisory
Winter Weather Advisory
  •  
    Wind Advisory until March 14, 08:00am

    NOW until 8:00am Sat

    Wind Advisory

  • This Afternoon

    High: 39 °F

    Rain/Snow

  • Tonight

    Tonight: Rain and snow showers, becoming all snow after 10pm.  Low around 23. Breezy, with a west wind 16 to 21 mph, with gusts as high as 40 mph.  Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    Low: 23 °F

    Breezy.
    Rain/Snow
    then Snow
    Showers

  • Saturday

    Saturday: A chance of snow showers before 2pm.  Cloudy, then gradually becoming mostly sunny, with a high near 34. West wind 10 to 14 mph, with gusts as high as 30 mph.  Chance of precipitation is 50%. New snow accumulation of less than one inch possible.

    High: 34 °F

    Chance Snow
    Showers

  • Saturday Night

    Saturday Night: Snow showers likely after 2am.  Increasing clouds, with a low around 21. Calm wind.  Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 21 °F

    Partly Cloudy
    then Snow
    Showers
    Likely

  • Sunday

    Sunday: Snow showers likely, possibly mixing with rain after 11am, then gradually ending.  Mostly cloudy, with a high near 49. South wind 6 to 11 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 49 °F

    Rain/Snow
    Likely then
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A chance of showers after 2am.  Mostly cloudy, with a low around 42. South wind around 15 mph, with gusts as high as 34 mph.  Chance of precipitation is 30%.

    Low: 42 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: Showers, mainly after 8am.  High near 60. South wind around 14 mph, with gusts as high as 32 mph.  Chance of precipitation is 90%.

    High: 60 °F

    Showers

  • Monday Night

    Monday Night: Rain, possibly mixed with snow showers before 2am, then a chance of snow showers.  Low around 16. West wind around 16 mph, with gusts as high as 33 mph.  Chance of precipitation is 80%.

    Low: 16 °F

    Rain/Snow

Detailed Forecast

This Afternoon
Snow showers likely before 4pm, then rain and snow showers. High near 39. South wind around 17 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Rain and snow showers, becoming all snow after 10pm. Low around 23. Breezy, with a west wind 16 to 21 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Saturday
A chance of snow showers before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 34. West wind 10 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.
Saturday Night
Snow showers likely after 2am. Increasing clouds, with a low around 21. Calm wind. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Sunday
Snow showers likely, possibly mixing with rain after 11am, then gradually ending. Mostly cloudy, with a high near 49. South wind 6 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
A chance of showers after 2am. Mostly cloudy, with a low around 42. South wind around 15 mph, with gusts as high as 34 mph. Chance of precipitation is 30%.
Monday
Showers, mainly after 8am. High near 60. South wind around 14 mph, with gusts as high as 32 mph. Chance of precipitation is 90%.
Monday Night
Rain, possibly mixed with snow showers before 2am, then a chance of snow showers. Low around 16. West wind around 16 mph, with gusts as high as 33 mph. Chance of precipitation is 80%.
Tuesday
A chance of snow showers. Mostly cloudy, with a high near 22. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 12.
Wednesday
Mostly cloudy, with a high near 32.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 24. Chance of precipitation is 30%.
Thursday
A chance of rain and snow showers. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Great Valley NY
 42.23°N 78.59°W (Elev. 1877 ft)
9:59 am EDT Mar 13, 2026
1pm EDT Mar 13, 2026-6pm EDT Mar 19, 2026
 
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