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

Hazardous Weather Conditions

Current conditions at

Penn Yan, Penn Yan Airport (KPEO)

Lat: 42.64°NLon: 77.05°WElev: 902ft.

Mostly Cloudy

13°F

-11°C

Humidity 81%
Wind Speed SW 3 mph
Barometer 29.83 in (1011.9 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Last update 6 Feb 12:53 am EST
Extended Forecast for

Rock Stream NY

Extreme Cold Warning February 7, 04:00am until February 8, 01:00pm
Click here for hazard details and duration
Extreme Cold Warning

  • Overnight

    Overnight: Mostly cloudy, with a low around 13. South wind 3 to 5 mph.

    Low: 13 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of snow, mainly after 11am. Mostly cloudy, with a high near 26. South wind around 7 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 26 °F

    Chance Snow

  • Friday Night

    Friday Night: Snow likely, mainly before 5am. Areas of blowing snow after midnight. Mostly cloudy, with a low around 1. Wind chill values as low as -17. Blustery, with a south wind 5 to 10 mph becoming northwest 18 to 23 mph after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 1 °F

    Snow Likely
    and Areas
    Blowing Snow

  • Saturday

    Saturday: A chance of snow, mainly between 7am and 2pm, then a chance of snow showers after 2pm. Areas of blowing snow. Mostly cloudy and cold, with a high near 4. Wind chill values as low as -22. Blustery, with a northwest wind 21 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 4 °F

    Chance Snow
    and Areas
    Blowing Snow

  • Saturday Night

    Saturday Night: A chance of snow showers. Areas of blowing snow. Mostly cloudy, with a low around 2. Northwest wind 13 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    Low: 2 °F

    Chance Snow
    Showers and
    Areas Blowing
    Snow

  • Sunday

    Sunday: A slight chance of snow showers before 1pm. Mostly cloudy, with a high near 11. Chance of precipitation is 20%.

    High: 11 °F

    Slight Chance
    Snow Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 2.

    Low: 2 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 18.

    High: 18 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 13. South wind 3 to 5 mph.
Friday
A chance of snow, mainly after 11am. Mostly cloudy, with a high near 26. South wind around 7 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Friday Night
Snow likely, mainly before 5am. Areas of blowing snow after midnight. Mostly cloudy, with a low around 1. Wind chill values as low as -17. Blustery, with a south wind 5 to 10 mph becoming northwest 18 to 23 mph after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Saturday
A chance of snow, mainly between 7am and 2pm, then a chance of snow showers after 2pm. Areas of blowing snow. Mostly cloudy and cold, with a high near 4. Wind chill values as low as -22. Blustery, with a northwest wind 21 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Saturday Night
A chance of snow showers. Areas of blowing snow. Mostly cloudy, with a low around 2. Northwest wind 13 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Sunday
A slight chance of snow showers before 1pm. Mostly cloudy, with a high near 11. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 2.
Monday
Mostly cloudy, with a high near 18.
Monday Night
Partly cloudy, with a low around 8.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
A chance of snow showers. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.
Wednesday
A chance of snow showers. Mostly cloudy, with a high near 33. Chance of precipitation is 40%.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Thursday
Mostly cloudy, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rock Stream NY
 42.46°N 76.92°W (Elev. 879 ft)
Last Update:
12:57 am EST Feb 6, 2026
Forecast Valid:
1am EST Feb 6, 2026-6pm EST Feb 12, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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