Weather Forecast for
Zip Code 11790 Stony Brook, NY

Today: Showers and possibly a thunderstorm, mainly after 2pm. High near 68. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Tonight: Showers and possibly a thunderstorm before 10pm, then a slight chance of showers between 10pm and midnight. Areas of fog after 10pm. Low around 52. South wind 5 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday: Areas of fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 75. Calm wind becoming south 5 to 7 mph in the afternoon.

Sunday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 50. Calm wind becoming north 5 to 7 mph after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Monday: Showers likely, mainly before noon. Mostly cloudy, with a high near 64. North wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Monday Night: Partly cloudy, with a low around 46.

Tuesday: Sunny, with a high near 68.

Tuesday Night: Partly cloudy, with a low around 50.

Wednesday: A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 66.

Wednesday Night: Showers likely, mainly after 8pm. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.

Thursday: Showers likely. Mostly cloudy, with a high near 68. Chance of precipitation is 70%.

Thursday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 52.

Friday: A 40 percent chance of showers. Partly sunny, with a high near 70.

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