7-Day Forecast 42.21°N 78.6°W (Text-Only)
NWS Forecast for: Great Valley NY
Issued by: National Weather Service Buffalo, NY
Last Update: 1:36 pm EDT Jul 13, 2025




This Afternoon: Showers and thunderstorms likely, mainly between 4pm and 5pm. Partly sunny, with a high near 83. Southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: A chance of showers and thunderstorms, mainly before 11pm. Patchy fog before 2am, then patchy fog after 3am. Otherwise, partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday: A chance of showers, with thunderstorms also possible after 2pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 80. Light and variable wind. Chance of precipitation is 30%.

Monday Night: Mostly clear, with a low around 62. Calm wind.

Tuesday: Sunny, with a high near 85. Calm wind.

Tuesday Night: Partly cloudy, with a low around 66. Calm wind.

Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 50%.

Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 40%.

Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.

Thursday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

Friday: Showers likely. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.

Friday Night: Showers likely. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.

Saturday: A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 30%.

Saturday Night: A chance of showers. Partly cloudy, with a low around 60. Chance of precipitation is 30%.

Sunday: A chance of showers and thunderstorms. Partly sunny, with a high near 79.



Great Valley NY
 42.21°N 78.6°W (Elev. 1558 ft)

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