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Now · 5:25 PM

Southold Weather & Hourly Forecast

United States · New York · 11971

Mostly sunny
79°F
Mostly sunny
Feels like: 79°F
💧 Humidity 66% 🌡 Pressure 29.80 inHg 💨 Wind 11 mph 👁 Visibility 6.2 mi Clouds 11% ☀️ UV index 1.4 · Low 🌅 Sunrise 6:19 AM 🌇 Sunset 7:18 PM

Hourly Forecast for Southold

Today
Mostly sunny · 6:00 PM Mostly sunny
79° 💧 None 💨 11 mph H 66%29.80 inHg
Clear night · 9:00 PM Clear night
75° 💧 None 💨 10 mph H 66%29.83 inHg
Tomorrow
Mostly cloudy night · 12:00 AM Mostly cloudy night
70° 💧 None 💨 12 mph H 68%29.83 inHg
Mostly clear night · 3:00 AM Mostly clear night
66° 💧 None 💨 13 mph H 71%29.80 inHg
Clear night · 6:00 AM Clear night
64° 💧 None 💨 14 mph H 72%29.77 inHg
Sunny · 9:00 AM Sunny
69° 💧 None 💨 11 mph H 71%29.83 inHg
Sunny · 12:00 PM Sunny
73° 💧 None 💨 4 mph H 62%29.83 inHg
Mostly cloudy · 3:00 PM Mostly cloudy
74° 💧 0.02 in 💨 4 mph H 62%29.80 inHg
Light rain · 6:00 PM Light rain
72° 💧 0.03 in 💨 9 mph H 75%29.85 inHg
Light rain · 9:00 PM Light rain
67° 💧 0.01 in 💨 12 mph H 78%29.88 inHg
Sunday
Mostly cloudy night · 12:00 AM Mostly cloudy night
65° 💧 None 💨 12 mph H 82%29.91 inHg
Overcast night · 3:00 AM Overcast night
64° 💧 None 💨 9 mph H 76%29.91 inHg
Mostly cloudy night · 6:00 AM Mostly cloudy night
63° 💧 None 💨 12 mph H 77%29.94 inHg
Mostly cloudy · 9:00 AM Mostly cloudy
65° 💧 None 💨 12 mph H 68%29.97 inHg
Partly cloudy · 12:00 PM Partly cloudy
67° 💧 None 💨 3 mph H 59%30.00 inHg
Mostly cloudy · 3:00 PM Mostly cloudy
70° 💧 None 💨 9 mph H 59%29.97 inHg

In Southold and, more broadly, across the state of New York: The late afternoon will feature mostly sunny skies with just a few clouds drifting by. Temperatures are expected to remain mild, ranging from around 61 to 72 degrees Fahrenheit. Winds will be coming from the northwest at speeds up to 11 mph, with gusts reaching as high as 19 mph. No rain is forecasted for the evening, so it should be a dry night. The moderate northwest wind may make the evening feel a bit cooler, especially after sunset. Overall, conditions will be comfortable and quiet as the day transitions into the night.

15-Day Weather Outlook for Southold

TomorrowTomorrow Light rain Light rain 76°/65° 💧 0.06 in 💨 15 mph
Sunday, Sep 6Sun Sep 6 Light rain Light rain 70°/64° 💧 0.01 in 💨 13 mph
Monday, Sep 7Mon Sep 7 Sunny Sunny 74°/63° 💧 None 💨 14 mph
Tuesday, Sep 8Tue Sep 8 Overcast Overcast 74°/68° 💧 None 💨 11 mph
Wednesday, Sep 9Wed Sep 9 Overcast Overcast 76°/71° 💧 None 💨 25 mph
Thursday, Sep 10Thu Sep 10 Light rain Light rain 75°/60° 💧 0.04 in 💨 27 mph
Friday, Sep 11Fri Sep 11 Overcast Overcast 68°/57° 💧 None 💨 20 mph
Saturday, Sep 12Sat Sep 12 Sunny Sunny 66°/57° 💧 None 💨 14 mph
Sunday, Sep 13Sun Sep 13 Light rain Light rain 70°/66° 💧 0.11 in 💨 19 mph
Monday, Sep 14Mon Sep 14 Light rain Light rain 73°/61° 💧 0.04 in 💨 22 mph
Tuesday, Sep 15Tue Sep 15 Sunny Sunny 67°/56° 💧 None 💨 18 mph
Wednesday, Sep 16Wed Sep 16 Mostly cloudy Mostly cloudy 68°/59° 💧 None 💨 17 mph
Thursday, Sep 17Thu Sep 17 Light rain Light rain 74°/68° 💧 0.03 in 💨 19 mph
Friday, Sep 18Fri Sep 18 Heavy rain Heavy rain 72°/66° 💧 1.36 in 💨 30 mph
Saturday, Sep 19Sat Sep 19 Light rain Light rain 71°/63° 💧 0.04 in 💨 20 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Southold

Vertical axis: °F · Color based on temperature
Mostly sunny at 6:00 PM
79° Today 6:00 PM
Sunny at 7:00 PM
78° 7:00 PM
Clear night at 8:00 PM
77° 8:00 PM
Clear night at 9:00 PM
75° 9:00 PM
Clear night at 10:00 PM
74° Today 10:00 PM
Partly cloudy night at 11:00 PM
72° 11:00 PM
Mostly cloudy night at 12:00 AM
70° 12:00 AM
Partly cloudy night at 1:00 AM
69° 1:00 AM
Partly cloudy night at 2:00 AM
68° Tomorrow 2:00 AM
Mostly clear night at 3:00 AM
66° 3:00 AM
Clear night at 4:00 AM
65° 4:00 AM
Clear night at 5:00 AM
64° 5:00 AM
Clear night at 6:00 AM
64° Tomorrow 6:00 AM
Sunny at 7:00 AM
64° 7:00 AM
Sunny at 8:00 AM
66° 8:00 AM
Sunny at 9:00 AM
69° 9:00 AM
Sunny at 10:00 AM
71° Tomorrow 10:00 AM
Sunny at 11:00 AM
72° 11:00 AM
Sunny at 12:00 PM
73° 12:00 PM
Sunny at 1:00 PM
73° 1:00 PM
Sunny at 2:00 PM
73° Tomorrow 2:00 PM
Mostly cloudy at 3:00 PM
74° 3:00 PM
Light rain at 4:00 PM
74° 4:00 PM
Light rain at 5:00 PM
73° 5:00 PM
Light rain at 6:00 PM
72° Tomorrow 6:00 PM
Light rain at 7:00 PM
70° 7:00 PM
Light rain at 8:00 PM
68° 8:00 PM
Light rain at 9:00 PM
67° 9:00 PM
Mostly cloudy night at 10:00 PM
66° Tomorrow 10:00 PM
Mostly cloudy night at 11:00 PM
65° 11:00 PM
Mostly cloudy night at 12:00 AM
65° 12:00 AM
Mostly cloudy night at 1:00 AM
65° 1:00 AM
Mostly cloudy night at 2:00 AM
64° Sunday 2:00 AM
Overcast night at 3:00 AM
64° 3:00 AM
Overcast night at 4:00 AM
64° 4:00 AM
Mostly cloudy night at 5:00 AM
63° 5:00 AM
Mostly cloudy night at 6:00 AM
63° Sunday 6:00 AM
Mostly cloudy at 7:00 AM
63° 7:00 AM
Mostly cloudy at 8:00 AM
63° 8:00 AM
Mostly cloudy at 9:00 AM
65° 9:00 AM
Mostly cloudy at 10:00 AM
65° Sunday 10:00 AM
Partly cloudy at 11:00 AM
66° 11:00 AM
Partly cloudy at 12:00 PM
67° 12:00 PM
Partly cloudy at 1:00 PM
67° 1:00 PM
Partly cloudy at 2:00 PM
68° Sunday 2:00 PM
Mostly cloudy at 3:00 PM
70° 3:00 PM
Mostly cloudy at 4:00 PM
70° 4:00 PM
Mostly cloudy at 5:00 PM
70° 5:00 PM
Mostly cloudy at 6:00 PM
71° Sunday 6:00 PM
Mostly cloudy at 7:00 PM
70° 7:00 PM
Mostly cloudy night at 8:00 PM
69° 8:00 PM
Mostly cloudy night at 9:00 PM
70° 9:00 PM
Partly cloudy night at 10:00 PM
68° Sunday 10:00 PM
Partly cloudy night at 11:00 PM
67° 11:00 PM
Partly cloudy night at 12:00 AM
66° 12:00 AM
Mostly clear night at 1:00 AM
65° 1:00 AM
Mostly clear night at 2:00 AM
65° Monday 2:00 AM
Clear night at 3:00 AM
64° 3:00 AM
Clear night at 4:00 AM
63° 4:00 AM
Clear night at 5:00 AM
63° 5:00 AM
Clear night at 6:00 AM
63° Monday 6:00 AM
Sunny at 7:00 AM
64° 7:00 AM
Sunny at 8:00 AM
65° 8:00 AM
Sunny at 9:00 AM
66° 9:00 AM
Sunny at 10:00 AM
68° Monday 10:00 AM
Sunny at 11:00 AM
70° 11:00 AM
Sunny at 12:00 PM
72° 12:00 PM
Sunny at 1:00 PM
73° 1:00 PM
Sunny at 2:00 PM
74° Monday 2:00 PM
Sunny at 3:00 PM
74° 3:00 PM
Sunny at 4:00 PM
75° 4:00 PM
Sunny at 5:00 PM
75° 5:00 PM
Sunny at 6:00 PM
74° Monday 6:00 PM
Sunny at 7:00 PM
73° 7:00 PM
Clear night at 8:00 PM
72° 8:00 PM
Clear night at 9:00 PM
71° 9:00 PM
Partly cloudy night at 10:00 PM
70° Monday 10:00 PM
Mostly cloudy night at 11:00 PM
70° 11:00 PM
Mostly cloudy night at 12:00 AM
69° 12:00 AM
Mostly cloudy night at 1:00 AM
69° 1:00 AM
Mostly cloudy night at 2:00 AM
69° Tuesday 2:00 AM
Overcast night at 3:00 AM
69° 3:00 AM
Overcast night at 4:00 AM
68° 4:00 AM
Overcast night at 5:00 AM
68° 5:00 AM
Overcast night at 6:00 AM
67° Tuesday 6:00 AM
Overcast at 7:00 AM
66° 7:00 AM
Mostly cloudy at 8:00 AM
66° 8:00 AM
Overcast at 9:00 AM
67° 9:00 AM
Mostly cloudy at 10:00 AM
69° Tuesday 10:00 AM
Mostly cloudy at 11:00 AM
70° 11:00 AM
Mostly cloudy at 12:00 PM
71° 12:00 PM
Mostly cloudy at 1:00 PM
72° 1:00 PM
Mostly cloudy at 2:00 PM
73° Tuesday 2:00 PM
Overcast at 3:00 PM
74° 3:00 PM
Mostly cloudy at 4:00 PM
75° 4:00 PM
Mostly cloudy at 5:00 PM
75° 5:00 PM

AIR QUALITY FORECAST

Air Quality Forecast for Southold

Hourly forecast · Updated every 2 hours
Poor
Nearest forecast value 6:00 PM
PM2.5 Fine particles Fair 15,8µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 18,0µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Poor 147,7µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 4,9µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Strenuous outdoor physical activity should be limited, especially for sensitive people.

UV & HEALTH

UV, Sun & Health Outlook in Southold

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.
0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme
Today UV 7,1High 😷Poor
Tomorrow UV 6,6High 😐Moderate
Sunday UV 6,4High 🙂Fair
Monday UV 6,2High 😐Moderate
Tuesday UV 6,2High 😷Poor
Wednesday UV 6,0High Unavailable
Thursday UV 6,0High Unavailable
Hourly UV index today
6:00 PMUV 0,4 7:00 PMUV 0,0
Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Take it easier outdoors

If you are sensitive to air pollution, keep intense outdoor exercise shorter or choose a less demanding activity.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure.

Consider reducing outdoor activity

Current air conditions favor shorter, lighter outdoor activity rather than prolonged strenuous exercise.

WIND OUTLOOK

Hourly Wind Forecast for Southold

Vertical axis: mph · Horizontal axis: hours
Hourly wind speed Chart of sustained wind and maximum gusts in mph. Today 6:00 PM 7:00 PM 8:00 PM 9:00 PM Today 10:00 PM 11:00 PM 12:00 AM 1:00 AM Tomorrow 2:00 AM 3:00 AM 4:00 AM 5:00 AM Tomorrow 6:00 AM 7:00 AM 8:00 AM 9:00 AM Tomorrow 10:00 AM 11:00 AM 12:00 PM 1:00 PM Tomorrow 2:00 PM 3:00 PM 4:00 PM 5:00 PM Tomorrow 6:00 PM 7:00 PM 8:00 PM 9:00 PM Tomorrow 10:00 PM 11:00 PM 12:00 AM 1:00 AM Sunday 2:00 AM 3:00 AM 4:00 AM 5:00 AM Sunday 6:00 AM 7:00 AM 8:00 AM 9:00 AM Sunday 10:00 AM 11:00 AM 12:00 PM 1:00 PM Sunday 2:00 PM 3:00 PM 4:00 PM 5:00 PM Sunday 6:00 PM 7:00 PM 8:00 PM 9:00 PM Sunday 10:00 PM 11:00 PM 12:00 AM 1:00 AM Monday 2:00 AM 3:00 AM 4:00 AM 5:00 AM Monday 6:00 AM 7:00 AM 8:00 AM 9:00 AM Monday 10:00 AM 11:00 AM 12:00 PM 1:00 PM Monday 2:00 PM 3:00 PM 4:00 PM 5:00 PM Monday 6:00 PM 7:00 PM 8:00 PM 9:00 PM Monday 10:00 PM 11:00 PM 12:00 AM 1:00 AM Tuesday 2:00 AM 3:00 AM 4:00 AM 5:00 AM Tuesday 6:00 AM 7:00 AM 8:00 AM 9:00 AM Tuesday 10:00 AM 11:00 AM 12:00 PM 1:00 PM Tuesday 2:00 PM 3:00 PM 4:00 PM 5:00 PM
Sustained wind Max gusts
NIGHT SKY · SOUTHOLD, NEW YORK

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 9:00 PM–10:00 PM.

95/100Best-hour score
BEST TIME TONIGHT 9:00 PM–10:00 PM Astronomical darkness: 8:53 PM–4:44 AM
Cloud cover 7% Real hourly forecast for the best viewing hour.
Moonlight 44% Last Quarter · Moon below the horizon at the best viewing hour.
Meteor activity Aurigids Reference ZHR 6 · Radiant -9° high at the best hour.
Estimated visible meteors 0–1/hour Local estimate after weather, moonlight and radiant-height adjustments.
Chance ≥1 meteor in 30 min5%
UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.
AUG 28–SEP 5
AurigidsStart AUG 28 · Peak SEP 1 · End SEP 5 · ZHR 6 · 80% Moon at peak
ACTIVE NOW
SEP 5–SEP 21
September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak
UPCOMING
SEP 20–NOV 20
Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak
UPCOMING
OCT 2–NOV 7
OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak
UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

Forecast data for Southold were last refreshed today at 5:25 PM. The current forecast period extends through 06/09/2026 at 3:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.