See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
25°
Clear
Feels Like: 23°
Min: 13°
Max: 25°
The next few hours will be clear, with today reaching 25°C and dropping to 19°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:40
Sunrise
18:52
Sunset
Moon
Waxing Crescent
12:33
Moonrise
20:56
Moonset
Daily Forecast
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
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Weather in Stony Brook today, September 16, 2026
Stony Brook is set for a fine, sunny day on September 16, 2026, with only limited interruptions to the clear sky. The early hours look particularly favourable for being outside.
Expect highs of 25°C and cooler readings close to 13°C. Relative humidity sits between 45% and 92%, reaching its peak around 23:00. Expect gentle winds, highest near 17:00 at 3.8 km/h.
Expect persistent cloud later on, with amounts around 100% by 16:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 15.9 km on average, though it can drop toward 14.5 km in thicker cloud or showers. Daylight runs from 06:40 to 18:52, lasting 12 hours 12 minutes of sunlight today.
Taken together, settled sunshine in Stony Brook on September 16, 2026 makes outdoor timing easier, with highs near 25°C.
Frequently asked questions about weather in Stony Brook
How warm does it get in Stony Brook?
The warmest month in Stony Brook is July, with average high temperatures of 28°C. The average temperature during this period is around 25°C.
How cold does it get in Stony Brook?
The coldest month in Stony Brook is January, with average low temperatures of -1°C. The average temperature during this period is around 1°C.
What is the wettest time of year in Stony Brook?
The wettest month in Stony Brook is December, with an average of 116mm of precipitation.
What is the driest time of year in Stony Brook?
The driest month in Stony Brook is June, with an average of 77mm of precipitation.
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