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

Hazardous Weather Conditions

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Fog/Mist

36°F

2°C

Humidity 93%
Wind Speed Calm
Barometer 29.93 in
Dewpoint 34°F (1°C)
Visibility 1.50 mi
Last update 18 Feb 1:35 am EST
Extended Forecast for

4 Miles ENE Great Valley NY

Dense Fog Advisory February 18, 01:43am until February 18, 07:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory February 18, 01:43am until February 18, 07:00am

    NOW until 7:00am Wed

    Dense Fog Advisory

  • Overnight

    Low: 34 °F

    Chance Rain
    and Patchy
    Dense Fog

  • Wednesday

    Wednesday: Rain. Patchy fog before 8am. High near 41. East wind 6 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 41 °F

    Rain and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 34. Southwest wind around 6 mph becoming calm after midnight.

    Low: 34 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of showers after 1pm. Mostly cloudy, with a high near 46. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 46 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 34. Southeast wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 34 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Rain showers before 4pm, then rain and snow showers likely. High near 44. Southeast wind 8 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 44 °F

    Showers then
    Rain/Snow

  • Friday Night

    Friday Night: Snow showers likely, mainly before 7pm. Mostly cloudy, with a low around 29. West wind around 8 mph. Chance of precipitation is 60%.

    Low: 29 °F

    Snow Showers
    Likely

  • Saturday

    Saturday: Mostly cloudy, with a high near 35. West wind around 7 mph.

    High: 35 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of rain, mainly after 5am. Patchy dense fog. Otherwise, cloudy, with a low around 34. East wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain. Patchy fog before 8am. High near 41. East wind 6 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 34. Southwest wind around 6 mph becoming calm after midnight.
Thursday
A slight chance of showers after 1pm. Mostly cloudy, with a high near 46. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 34. Southeast wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain showers before 4pm, then rain and snow showers likely. High near 44. Southeast wind 8 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Snow showers likely, mainly before 7pm. Mostly cloudy, with a low around 29. West wind around 8 mph. Chance of precipitation is 60%.
Saturday
Mostly cloudy, with a high near 35. West wind around 7 mph.
Saturday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.
Sunday
Snow showers likely. Mostly cloudy, with a high near 32. Chance of precipitation is 70%.
Sunday Night
Snow showers likely. Mostly cloudy, with a low around 19. Chance of precipitation is 60%.
Monday
A chance of snow showers. Mostly cloudy, with a high near 26. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 7.
Tuesday
Partly sunny, with a high near 18.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Great Valley NY
 42.24°N 78.53°W (Elev. 2100 ft)
Last Update:
12:36 am EST Feb 18, 2026
Forecast Valid:
1am EST Feb 18, 2026-6pm EST Feb 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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