Setauket-East Setauket weather in March

In March, Setauket-East Setauket sees average daytime highs of 44°F and overnight lows near 35°F, with 4.6 in of precipitation across 10.6 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 41°F in the first days to 47°F by the end. The sky is clear or mostly clear about 29% of the time in March, and the air most often feels dry.

Daylight stretches from about 11 hours at the start of March to 12 h 24 min by month's end. Set against the rest of the year, March is Setauket-East Setauket's 10th-clearest and 5th-windiest month. For the whole year in context, see Setauket-East Setauket's year-round climate.

Daytime high
44°
9th warmest
Overnight low
35°
3rd coldest
Precipitation
4.6 in
10.6 wet days
Daylight
11 h 42 min
6:12 AM – 5:52 PM
Cloud cover
61%
10th clearest
Wind
11 mph
5th windiest
Solar energy
4.12 kWh/m²
Travel score
0.7
out of 10

Setauket-East Setauket is former census-designated place in Suffolk County, New York, United States.

Density
641/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 41°F in the first days to 47°F by the end.

A typical March day in Setauket-East Setauket reaches about 44°F in the afternoon and slips back to 35°F overnight — a 9°F spread between the day's warmth and the night's chill. On most days the high lands between 36°F and 52°F. Set against its neighbours, March runs about 5°F warmer than February and about 9°F cooler than April.

20°30°40°50°60°151015202531
Avg high (°F)Avg low (°F)
14131
24131
34131
44132
54232
64232
74232
84233
94233
104233
114333
124333
134334
144334
154334
164434
174435
184435
194435
204535
214536
224536
234536
244637
254637
264637
274738
284738
294738
304839
314839

How March really feels in Setauket-East Setauket

Once humidity and wind are folded in, March averages 0 days that feel above 90°F and 30 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
30
wind chill below the day's low

The story in March is cold — wind chill drags the overnight "feels like" below the raw low.

Setauket-East Setauket weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan38° / 29°3.79.74.29.40.0
Feb38° / 29°3.49.13.810.40.0
Mar44° / 35°4.610.63.311.70.7
Apr53° / 44°3.910.70.413.13.0
May63° / 53°3.510.8014.35.3
Jun72° / 64°3.69.7014.96.7
Jul78° / 70°3.29.2014.66.9
Aug78° / 70°4.09.5013.67.0
Sep72° / 64°3.89.1012.36.9
Oct62° / 54°4.49.40.110.95.5
Nov53° / 44°3.79.10.39.73.0
Dec44° / 35°4.810.62.49.10.7

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 16% of March, with mostly cloudy or overcast conditions the remaining 54%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14456
24456
34456
44555
54555
64555
74555
84654
94654
104654
114753
124753
134753
144753
154852
164753
174753
184753
194753
204654
214654
224654
234555
244654
254555
264456
274456
284456
294456
304456
314456

Chance of precipitation in March

Any precipitationSnow

Setauket-East Setauket gets around 4.6 in of rain and snow over 10.6 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 34% and peaks near 36% on the wettest days, and about 3 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13613
23613
33613
43513
53512
63412
73412
83312
93312
103311
113211
123211
133211
143211
153211
163211
173210
183210
193210
203310
213310
22349
23349
24358
25358
26367
27367
28366
29366
30365
31365

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

Most of March feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, March lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in March

Winds average 11 mph in March.

Across March, daily wind ranges from about 10 mph on the calmest days to 11 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
111light breeze
211light breeze
311light breeze
411light breeze
511light breeze
611light breeze
711light breeze
811light breeze
911light breeze
1011light breeze
1111light breeze
1211light breeze
1311light breeze
1411light breeze
1511light breeze
1611light breeze
1711light breeze
1811light breeze
1911light breeze
2011light breeze
2111light breeze
2211light breeze
2311light breeze
2411light breeze
2511light breeze
2611light breeze
2710light breeze
2810light breeze
2910light breeze
3010light breeze
3110light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 hours at the start of March to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 84 minutes over March. Sunrise moves from 6:36 AM to 5:47 AM, and sunset from 5:35 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:365:35
211.06:355:36
311.16:335:37
411.16:325:38
511.26:305:40
611.26:295:41
711.26:275:42
811.36:255:43
911.36:245:44
1011.46:225:45
1111.46:215:46
1211.56:195:47
1311.56:175:49
1411.66:165:50
1511.66:145:51
1611.76:125:52
1711.76:115:53
1811.86:095:54
1911.86:075:55
2011.86:055:56
2111.96:045:57
2211.96:025:59
2312.06:006:00
2412.05:596:01
2512.15:576:02
2612.15:556:03
2712.25:536:04
2812.25:526:05
2912.35:506:06
3012.35:486:07
3112.45:476:08

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.12 kWh/m².

For context, solar energy here swings from a low near 1.74 kWh/m² to a high of 6.34 kWh/m² in June across the year — March's 4.12 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.5Moderate
23.6Moderate
33.6Moderate
43.7Moderate
53.7Moderate
63.8Moderate
73.8Moderate
83.9Moderate
93.9Moderate
104.0Moderate
114.0Bright
124.0Bright
134.1Bright
144.1Bright
154.2Bright
164.2Bright
174.2Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.6Bright
314.6Bright
Planning a trip in March

Hazard calendar for Setauket-East Setauket

In seasonPeak

None of Setauket-East Setauket's seasonal hazards are active in March. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Setauket-East Setauket sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is March a good time to visit Setauket-East Setauket?

Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.7
Sightseeing
9th-best month of the year
0.0
Beach & pool
9th-best month of the year

March is a weaker month for outdoor sightseeing in Setauket-East Setauket.

What to pack for Setauket-East Setauket in March

From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In March, Setauket-East Setauket sees daytime highs around 44°F and nights near 35°F. Pack a warm layer. Worth having: a heavy coat and rain gear. About 11 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Setauket-East Setauket in March

The nearest coast averages about 37°F in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 14 mi away) is warmest in August at about 74°F and coldest in February near 35°F.

It's comfortable for a long swim from Jul 1 to Sep 30 — about 3 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan39Bracing
Feb35Bracing
Mar37Bracing
Apr44Bracing
May54Bracing
Jun65Cool
Jul72Refreshing
Aug74Refreshing
Sep71Refreshing
Oct64Cool
Nov55Bracing
Dec46Bracing

UV index in Setauket-East Setauket in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Setauket-East Setauket peaks around July 11 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 11UV 8Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7Very high
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Setauket-East Setauket in March

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.

Air quality in Setauket-East Setauket is worst in July — around 20 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (November, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1120 µg/m³Nov 188 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar14Moderate
Apr16Moderate
May19Moderate
Jun20Moderate
Jul20Moderate
Aug17Moderate
Sep13Moderate
Oct9Good
Nov8Good
Dec9Good
Location & terrain

Where is Setauket-East Setauket?

Setauket-East Setauket sits at 40.9°N, 73.1°W, 102 ft above sea level, in United States. The nearest listed city is East Setauket, 0.6 mi away.

Topography around Setauket-East Setauket

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Setauket-East Setauket.

Within 2 miles, the terrain around Setauket-East Setauket has only modest variations in elevation — a maximum elevation change of 285 ft around an average of 121 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 338 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,457 ft.

The land around Setauket-East Setauket is covered by trees (77%) within 2 miles, water (45%) and trees (42%) within 10 miles, and water (47%) and trees (41%) within 50 miles.

2 miles
285 ft
10 miles
338 ft
50 miles
1,457 ft
treesgrasslandartificial surfaceswaterwetland
March weather nearby: East Setauket 0.6 mi · Centereach 5.0 mi · Selden 5.6 mi · Coram 6.8 mi · Lake Ronkonkoma 6.8 mi · Smithtown 7.5 mi · Farmingville 8.1 mi · Ronkonkoma 8.1 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Setauket-East Setauket (40.9306°, -73.1018°, elevation 102 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).