Lake Ronkonkoma weather in February

In February, Lake Ronkonkoma sees average daytime highs of 39°F and overnight lows near 30°F, with 3.5 in of precipitation across 9.3 wet days and about 10.4 hours of daylight. It is the 11th-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 38°F in the first days to 41°F by the end. The sky is clear or mostly clear about 34% of the time in February, and the air most often feels dry.

Daylight stretches from about 9 h 48 min at the start of February to 10 h 54 min by month's end. Set against the rest of the year, February is Lake Ronkonkoma's 6th-clearest and 4th-windiest month. For the whole year in context, see Lake Ronkonkoma's year-round climate.

Daytime high
39°
11th warmest
Overnight low
30°
1st coldest
Precipitation
3.5 in
9.3 wet days
Daylight
10 h 24 min
6:56 AM – 5:18 PM
Cloud cover
58%
6th clearest
Wind
12 mph
4th windiest
Solar energy
3.05 kWh/m²
Travel score
0.0
out of 10

Lake Ronkonkoma is census-designated place in Suffolk County, New York, United States.

Density
1,575/km²
people per km²

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

Temperature in February

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 38°F in the first days to 41°F by the end.

A typical February day in Lake Ronkonkoma reaches about 39°F in the afternoon and slips back to 30°F overnight — a 9°F spread between the day's warmth and the night's chill. On most days the high lands between 30°F and 48°F. Set against its neighbours, February runs on par with January and about 5°F cooler than March.

20°30°40°50°151015202528
Avg high (°F)Avg low (°F)
13829
23829
33829
43829
53829
63829
73829
83829
93829
103829
113829
123929
133929
143929
153929
163930
173930
184030
194030
204031
214031
224031
234031
244031
254131
264132
274132
284132

How February really feels in Lake Ronkonkoma

Once humidity and wind are folded in, February averages 0 days that feel above 90°F and 28 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
28
wind chill below the day's low

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

Lake Ronkonkoma weather by month

How February compares with the rest of the year at a glance. February is the 11th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan39° / 30°3.89.949.40.0
Feb39° / 30°3.59.33.710.40.0
Mar44° / 35°4.610.62.911.70.8
Apr53° / 44°3.810.90.413.12.8
May61° / 54°3.510.8014.25.0
Jun71° / 64°3.69.9014.96.6
Jul77° / 71°3.39.4014.67.0
Aug77° / 70°3.99.5013.67.1
Sep71° / 64°3.89.1012.36.9
Oct62° / 55°4.49.2010.95.5
Nov53° / 44°3.78.90.39.73.0
Dec44° / 36°4.810.62.39.10.9

Cloud cover in February

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in February.

Beyond those clear spells, partly cloudy skies cover about 13% of February, with mostly cloudy or overcast conditions the remaining 53%.

0%25%50%75%100%151015202528
Clearer (%)Cloudier (%)
14852
24852
34951
44852
54753
64753
74852
84852
94852
104852
114852
124852
134852
144753
154753
164753
174753
184753
194753
204753
214654
224654
234555
244555
254555
264555
274456
284555

Chance of precipitation in February

Any precipitationSnow

Lake Ronkonkoma gets around 3.5 in of rain and snow over 9.3 wet days in February. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 33% and peaks near 36% on the wettest days, and about 4 days bring snow. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202528
Rain chance (%)Snow chance (%)
12913
23014
33014
43014
53114
63114
73114
83214
93215
103315
113315
123314
133314
143314
153314
163413
173413
183413
193413
203513
213512
223512
233512
243612
253612
263612
273612
283612

Humidity in February

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, February 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%151015202528
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

Wind in February

Winds average 12 mph in February.

Across February, daily wind ranges from about 12 mph on the calmest days to 12 mph at its breeziest. It stays fairly steady from day to day.

051015151015202528
Wind speed (mph)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze

Sunrise & sunset in February

DaylightNight

Daylight runs from about 9 h 48 min at the start of February to 10 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over February. Sunrise moves from 7:11 AM to 6:38 AM, and sunset from 5:01 PM to 5:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202528
Daylight (h)Sunrise (AM)Sunset (PM)
19.87:115:01
29.97:105:03
39.97:095:04
410.07:085:05
510.07:075:06
610.07:065:08
710.17:055:09
810.17:045:10
910.17:035:11
1010.27:025:12
1110.27:015:14
1210.36:595:15
1310.36:585:16
1410.36:575:17
1510.46:565:18
1610.46:555:20
1710.56:535:21
1810.56:525:22
1910.56:515:23
2010.66:495:25
2110.66:485:26
2210.76:475:27
2310.76:455:28
2410.86:445:29
2510.86:425:30
2610.86:415:32
2710.96:395:33
2810.96:385:34

Solar energy in February

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in February, about 3.05 kWh/m².

For context, solar energy here swings from a low near 1.76 kWh/m² to a high of 6.38 kWh/m² in June across the year — February's 3.05 kWh/m² falls in the middle.

01234151015202528
Solar energy (kWh/m²)Level
12.6Moderate
22.6Moderate
32.7Moderate
42.7Moderate
52.7Moderate
62.8Moderate
72.8Moderate
82.8Moderate
92.9Moderate
102.9Moderate
112.9Moderate
123.0Moderate
133.0Moderate
143.0Moderate
153.1Moderate
163.1Moderate
173.1Moderate
183.2Moderate
193.2Moderate
203.2Moderate
213.3Moderate
223.3Moderate
233.3Moderate
243.4Moderate
253.4Moderate
263.4Moderate
273.5Moderate
283.5Moderate
Planning a trip in February

Hazard calendar for Lake Ronkonkoma

In seasonPeak

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

Lake Ronkonkoma 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 February a good time to visit Lake Ronkonkoma?

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

0.0
Sightseeing
11th-best month of the year
0.0
Beach & pool
9th-best month of the year

February is a weaker month for outdoor sightseeing in Lake Ronkonkoma.

What to pack for Lake Ronkonkoma in February

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

In February, Lake Ronkonkoma sees daytime highs around 39°F and nights near 30°F. Pack a warm layer. Worth having: a heavy coat and rain gear. About 9 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Lake Ronkonkoma in February

The nearest coast averages about 40°F in February — 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 73°F and coldest in February near 40°F.

It's comfortable for a long swim from Jul 3 to Sep 23 — about 2.7 months when the water holds above 68°F.

40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan43Bracing
Feb40Bracing
Mar40Bracing
Apr45Bracing
May54Bracing
Jun64Cool
Jul72Refreshing
Aug73Refreshing
Sep70Refreshing
Oct63Cool
Nov55Bracing
Dec49Bracing

UV index in Lake Ronkonkoma in February

LowModerateHighVery highExtreme

Clear-sky midday UV in February peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Lake Ronkonkoma 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 Lake Ronkonkoma in February

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Lake Ronkonkoma is worst in July — around 19 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1018 µg/m³Nov 169 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar15Moderate
Apr16Moderate
May18Moderate
Jun18Moderate
Jul19Moderate
Aug16Moderate
Sep13Moderate
Oct10Good
Nov9Good
Dec10Good
Location & terrain

Where is Lake Ronkonkoma?

Lake Ronkonkoma sits at 40.8°N, 73.1°W, 72 ft above sea level, in United States. The nearest listed city is Ronkonkoma, 1.2 mi away.

Topography around Lake Ronkonkoma

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Lake Ronkonkoma.

Within 2 miles, the terrain around Lake Ronkonkoma has only modest variations in elevation — a maximum elevation change of 194 ft around an average of 108 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 1,266 ft.

The land around Lake Ronkonkoma is covered by trees (71%) within 2 miles, trees (57%) within 10 miles, and water (51%) and trees (36%) within 50 miles.

2 miles
194 ft
10 miles
338 ft
50 miles
1,266 ft
treesgrasslandartificial surfaceswaterwetland
February weather nearby: Ronkonkoma 1.2 mi · Centereach 2.5 mi · Holbrook 3.1 mi · Hauppauge 3.7 mi · Smithtown 3.7 mi · Holtsville 5.0 mi · Central Islip 5.0 mi · Farmingville 5.6 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 Lake Ronkonkoma (40.8351°, -73.1312°, elevation 72 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).