Stony Brook, New York Weather
Solstice approaches — longest light. Day 86 of spring. Read this microseason across nine climate regions →
Stony Brook weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 13Overcast——88°69°—
- SundayJun 14Light Rain79%0.09″89°68°+1°
- MondayJun 15Light Drizzle79%0.01″75°60°-14°
- TuesdayJun 16Overcast——76°62°+1°
- WednesdayJun 17Overcast11%—77°63°+1°
- ThursdayJun 18Light Drizzle34%—85°68°+8°
- FridayJun 19Drizzle26%0.14″72°63°-13°
AQI 41 (Good), driven by Ozone. AQI down 14 over the last 6 hours (gradual decline). Ozone at AQI 35 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 16 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 35 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 16 around 1 PM.
- Present
- AQI 35
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 16
PM × Wind × Precip
PM2.5 at 4.9 µg/m³, PM10 at 5.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.92
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
Cut your thistles before St. John, you will have two instead of one.
- Moonrise
- 3:29 AM
- Moonset
- 7:28 PM
- In sign
- ♉︎ Taurus
Solstice approaches — longest light
Stony Brook at a glance
- Today vs. normal: 72°F — typical for the season
- Last frost: April 21 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Prune spring-blooming shrubs after flowers fade.
15-Day Forecast — Stony Brook
- Sat88°69°0%
- Sun89°68°79%
- Mon75°60°79%
- Tue76°62°3%
- Wed77°63°11%
- Thu85°68°34%
- Fri72°63°26%
- Sat78°59°12%
- Sun78°67°15%
- Mon67°57°25%
- Tue76°59°18%
- Wed77°64°18%
- Thu78°65°23%
- Fri77°66°32%
- Sat77°66°29%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 13, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Stony Brook
SPC has placed Stony Brook in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWMRGLMarginal Risk
- DAY 3NONENo severe risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Beaches near Stony Brook
- Robert Moses Beach20.8 mi
- Jones Beach Beach29.2 mi
Each linked page shows live water temperature, wave height, swim and surf verdicts, tides, and rip-current risk from NDBC + NOAA + NWS data.
ZIP codes in Stony Brook
- 11790