New London weather in March

In March, New London sees average daytime highs of 43°F and overnight lows near 34°F, with 4.7 in of precipitation across 10.5 wet days and about 11.7 hours of daylight. It is the 10th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 40°F in the first days to 46°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 New London's 10th-clearest and 5th-windiest month. For the whole year in context, see New London's year-round climate.

Daytime high
43°
10th warmest
Overnight low
34°
3rd coldest
Precipitation
4.7 in
10.5 wet days
Daylight
11 h 42 min
6:08 AM – 5:48 PM
Cloud cover
61%
10th clearest
Wind
13 mph
5th windiest
Solar energy
4.1 kWh/m²
Travel score
0.4
out of 10

New London is city in Connecticut, United States.

Density
989/km²
people per km²
Founded
1646

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 40°F in the first days to 46°F by the end.

A typical March day in New London reaches about 43°F in the afternoon and slips back to 34°F overnight — a 8°F spread between the day's warmth and the night's chill. On most days the high lands between 35°F and 50°F. Set against its neighbours, March runs about 4°F warmer than February and about 8°F cooler than April.

20°30°40°50°60°151015202531
Avg high (°F)Avg low (°F)
14031
24031
34031
44032
54132
64132
74132
84132
94133
104133
114233
124233
134233
144234
154234
164234
174334
184335
194335
204335
214335
224436
234436
244436
254437
264537
274537
284537
294638
304638
314638

How March really feels in New London

Once humidity and wind are folded in, March averages 0 days that feel above 90°F and 31 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
31
wind chill below the day's low

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

New London weather by month

How March compares with the rest of the year at a glance. March is the 10th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan38° / 29°4.010.44.59.40.0
Feb38° / 29°3.69.1410.30.0
Mar43° / 34°4.710.53.411.70.4
Apr50° / 43°4.210.90.413.12.3
May58° / 51°3.510.8014.34.3
Jun67° / 61°3.69.6014.96.3
Jul74° / 68°3.08.7014.77.2
Aug74° / 68°3.88.8013.77.2
Sep69° / 62°4.18.8012.36.8
Oct61° / 53°4.89.40.110.95.3
Nov52° / 44°4.29.30.39.72.8
Dec44° / 35°4.911.52.89.10.7

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 55%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24654
34555
44555
54555
64555
74555
84654
94654
104654
114654
124753
134753
144753
154654
164654
174654
184555
194555
204555
214555
224555
234456
244456
254456
264456
274357
284456
294456
304357
314357

Chance of precipitation in March

Any precipitationSnow

New London gets around 4.7 in of rain and snow over 10.5 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 37% on the wettest days, and about 3 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13615
23615
33615
43614
53514
63514
73514
83413
93413
103313
113312
123312
133212
143212
153211
163211
173111
183111
193110
203210
213210
22329
23339
24348
25358
26357
27367
28366
29376
30375
31375

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 13 mph in March.

Across March, daily wind ranges from about 13 mph on the calmest days to 14 mph at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (mph)Feels
114breezy
214breezy
314breezy
414breezy
514breezy
614breezy
714breezy
814breezy
914breezy
1014breezy
1114breezy
1214breezy
1314breezy
1414breezy
1514breezy
1614breezy
1713breezy
1813breezy
1913breezy
2013breezy
2113breezy
2213breezy
2313breezy
2413breezy
2513breezy
2613breezy
2713breezy
2813breezy
2913breezy
3013breezy
3113breezy

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 6:33 AM to 5:42 AM, and sunset from 5:30 PM to 6:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:335:30
211.06:315:32
311.16:305:33
411.16:285:34
511.16:275:35
611.26:255:36
711.26:235:37
811.36:225:39
911.36:205:40
1011.46:185:41
1111.46:175:42
1211.56:155:43
1311.56:135:44
1411.66:125:46
1511.66:105:47
1611.76:085:48
1711.76:075:49
1811.86:055:50
1911.86:035:51
2011.86:015:52
2111.96:005:53
2211.95:585:54
2312.05:565:56
2412.05:555:57
2512.15:535:58
2612.15:515:59
2712.25:496:00
2812.25:486:01
2912.35:466:02
3012.35:446:03
3112.45:426:04

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.1 kWh/m².

For context, solar energy here swings from a low near 1.69 kWh/m² to a high of 6.35 kWh/m² in June across the year — March's 4.1 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.6Moderate
43.6Moderate
53.7Moderate
63.7Moderate
73.8Moderate
83.8Moderate
93.9Moderate
103.9Moderate
114.0Moderate
124.0Bright
134.0Bright
144.1Bright
154.1Bright
164.2Bright
174.2Bright
184.2Bright
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 New London

In seasonPeak

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

New London 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 New London?

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

0.4
Sightseeing
10th-best month of the year
0.0
Beach & pool
8th-best month of the year

March is a weaker month for outdoor sightseeing in New London.

What to pack for New London in March

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

In March, New London sees daytime highs around 43°F and nights near 34°F. Pack a warm layer. Worth having: a heavy coat, rain gear and a windbreaker. About 11 days see rain.

a warm layera heavy coatrain geara windbreaker

Sea temperature near New London in March

The nearest coast averages about 39°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 16 mi away) is warmest in August at about 71°F and coldest in February near 39°F.

It's comfortable for a long swim from Jul 15 to Sep 15 — about 2.1 months when the water holds above 68°F.

40°50°60°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan42Bracing
Feb39Bracing
Mar39Bracing
Apr44Bracing
May52Bracing
Jun61Cool
Jul69Refreshing
Aug71Refreshing
Sep68Refreshing
Oct63Cool
Nov55Bracing
Dec48Bracing

UV index in New London in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in New London peaks around July 10 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 10UV 8Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in New London 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 New London is worst in July — around 15 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (November, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1515 µg/m³Nov 206 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb10Good
Mar11Good
Apr12Good
May14Moderate
Jun14Moderate
Jul15Moderate
Aug13Moderate
Sep10Good
Oct7Good
Nov6Good
Dec6Good
Location & terrain

Where is New London?

New London sits at 41.4°N, 72.1°W, 56 ft above sea level, in United States. The nearest listed city is Waterford, 1.9 mi away.

Topography around New London

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

Within 2 miles, the terrain around New London has only modest variations in elevation — a maximum elevation change of 266 ft around an average of 82 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 656 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,325 ft.

The land around New London is covered by trees (41%) and artificial surfaces (29%) within 2 miles, trees (55%) and water (35%) within 10 miles, and trees (49%) and water (44%) within 50 miles.

2 miles
266 ft
10 miles
656 ft
50 miles
1,325 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
March weather nearby: Waterford 1.9 mi · Ledyard 7.5 mi · Montville Center 8.7 mi · Norwich 12 mi · Westerly 14 mi · Windham 24 mi · Plainfield 24 mi · Willimantic 25 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 New London (41.3556°, -72.0995°, elevation 56 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).