10-day forecast for Stony Brook, NY: 65° to 91°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
91°
Best day: Sunday, August 9
83° · 0.17 in
Worst day: Thursday, August 13
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1089° / 72°0.04
Morning77°feels 76°
Afternoon89°feels 93°
Evening81°feels 84°
Overnight72°feels 72°
89 °
Stony Brook, Monday, 10 August
Light rain. High 89°, low 72°.
Pressure29.97 inHg
Wind2.4 mph NW
Humidity51%
Visibility6.2 mi
Dew point60°
Tue, 1186° / 76°0
Morning76°feels 76°
Afternoon85°feels 85°
Evening81°feels 84°
Overnight81°feels 83°
86 °
Stony Brook, Tuesday, 11 August
Overcast. High 86°, low 76°.
Pressure29.85 inHg
Wind9.5 mph W
Humidity50%
Visibility6.2 mi
Dew point62°
Wed, 1279° / 71°0.12
Morning71°feels 72°
Afternoon76°feels 77°
Evening75°feels 75°
Overnight79°feels 80°
79 °
Stony Brook, Wednesday, 12 August
Light rain. High 79°, low 71°.
Pressure29.71 inHg
Wind4.4 mph NE
Humidity80%
Visibility6.2 mi
Dew point67°
Thu, 1383° / 71°0.17
Morning74°feels 75°
Afternoon78°feels 78°
Evening81°feels 80°
Overnight71°feels 71°
83 °
Stony Brook, Thursday, 13 August
Light rain. High 83°, low 71°.
Pressure29.74 inHg
Wind20.4 mph NW
Humidity62%
Visibility—
Dew point63°
Fri, 1478° / 65°0
Morning67°feels 66°
Afternoon72°feels 71°
Evening77°feels 76°
Overnight70°feels 69°
78 °
Stony Brook, Friday, 14 August
Clear. High 78°, low 65°.
Pressure30.00 inHg
Wind13.2 mph NW
Humidity44%
Visibility—
Dew point47°
Sat, 1579° / 67°0
Morning69°feels 68°
Afternoon74°feels 73°
Evening78°feels 78°
Overnight70°feels 69°
79 °
Stony Brook, Saturday, 15 August
Clear. High 79°, low 67°.
Pressure30.09 inHg
Wind16.7 mph NW
Humidity46%
Visibility—
Dew point50°
Sun, 1677° / 66°0
Morning68°feels 67°
Afternoon74°feels 73°
Evening76°feels 75°
Overnight72°feels 71°
77 °
Stony Brook, Sunday, 16 August
Overcast. High 77°, low 66°.
Pressure30.18 inHg
Wind11.9 mph N
Humidity40%
Visibility—
Dew point46°
Mon, 1779° / 71°0.01
Morning73°feels 73°
Afternoon76°feels 76°
Evening76°feels 76°
Overnight73°feels 73°
79 °
Stony Brook, Monday, 17 August
Light rain. High 79°, low 71°.
Pressure30.18 inHg
Wind14.5 mph S
Humidity53%
Visibility—
Dew point57°
Tue, 1877° / 68°0.06
Morning69°feels 69°
Afternoon72°feels 73°
Evening76°feels 76°
Overnight71°feels 71°
77 °
Stony Brook, Tuesday, 18 August
Light rain. High 77°, low 68°.
Pressure30.15 inHg
Wind11.9 mph SW
Humidity73%
Visibility—
Dew point62°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Stony Brook, NY around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.