Current conditions at
Penn Yan, Penn Yan Airport (KPEO)
Lat: 42.64°NLon: 77.05°WElev: 902ft.
Overcast
69°F
21°C
| Humidity | 96% |
| Wind Speed | Calm |
| Barometer | 30.32 in (1026.3 mb) |
| Dewpoint | 68°F (20°C) |
| Visibility | 10.00 mi |
| Last update | 16 Sep 10:53 pm EDT |
Extended Forecast for
Rock Stream NY
Tonight

Low: 64 °F
Patchy Fog
Thursday

High: 75 °F
Showers
Thursday Night

Low: 58 °F
Decreasing
CloudsFriday

High: 70 °F
Sunny
Friday Night

Low: 50 °F
Partly Cloudy
Saturday

High: 66 °F
Partly Sunny
Saturday Night
Low: 56 °F
Chance
Showers then
ShowersSunday

High: 66 °F
Showers
Sunday Night
Low: 53 °F
Chance
Showers then
Mostly Cloudy
Detailed Forecast
Tonight
Patchy fog before 2am, then patchy fog after 5am. Otherwise, mostly cloudy, with a low around 64. Calm wind.
Thursday
Showers before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then a chance of showers after 2pm. High near 75. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 58. Light northwest wind.
Friday
Sunny, with a high near 70. North wind 5 to 11 mph.
Friday Night
Partly cloudy, with a low around 50. North wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 66.
Saturday Night
Showers, mainly after 2am. Low around 56. Chance of precipitation is 80%.
Sunday
Showers, mainly before 2pm. High near 66. Chance of precipitation is 80%.
Sunday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Monday
A chance of showers after 2pm. Partly sunny, with a high near 63. Chance of precipitation is 30%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 53. Chance of precipitation is 50%.
Tuesday
A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 40%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.
Wednesday
A chance of showers. Partly sunny, with a high near 66. Chance of precipitation is 40%.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Rock Stream NY
42.46°N 76.92°W (Elev. 879 ft)
42.46°N 76.92°W (Elev. 879 ft)
7:02 pm EDT Sep 16, 2026
11pm EDT Sep 16, 2026-6pm EDT Sep 23, 2026


