Weather StoryAlmanac, microseasons, and the day's weather story.

Larchmont, New York Weather

Solstice approaches — longest light. Day 88 of spring. Read this microseason across nine climate regions →

Larchmont weather forecast — hour by hour, 7-day outlook, NOAA radar

Larchmont, NY
Monday, June 15 at 10:30 AM
72
°
Clear
Feels like
72°
Humidity
58%
Wind
10 mph
Sunrise
1:22 AM
Sunset
4:28 PM
Larchmont, NY
Hour by hour · 24h
24-Hour ForecastLarchmont, NY: 24-hour forecast. Temperatures range from 55 to 79 degrees Fahrenheit.
L 55°H 79°
Larchmont, NY
7-day forecast
  1. Today
    Jun 15
    Heavy Rain
    88%
    0.31″
    79°64°—
  2. Tuesday
    Jun 16
    Overcast
    —
    —
    80°55°+1°
  3. Wednesday
    Jun 17
    Drizzle
    21%
    —
    81°65°+1°
  4. Thursday
    Jun 18
    Light Drizzle
    50%
    0.02″
    94°69°+13°
  5. Friday
    Jun 19
    Overcast
    19%
    —
    83°72°-11°
  6. Saturday
    Jun 20
    Partly Cloudy
    10%
    —
    79°62°-4°
  7. Sunday
    Jun 21
    Overcast
    —
    —
    80°63°+1°
Larchmont, NY
Next 24 hours · Mild now
50°68°85°6a12p6p12anow 70°high 79°low 55°
Larchmont, NY
Anemometer · 24h winds · from true
NESW
From · True
NW
313° · veering 81°
Direction
NW
313°
Sustained
10
mph
Gust
16
mph
Peak 24h
36
avg 11
Beaufort · 3 · GENTLE BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 11 · pk 36 @ 9:00p
0102030MPHB1B2B3B4B5B6-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 245SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 81° from the nw.
Larchmont, NY
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1003.0
+1.6 mb in 3h · rising · 29.62 inHg
Now
1003.0
mb
3h
+1.6
mb
12h
+0.5
mb
24h
-5.7
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 999–1008
9909951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR-21h-18h-15h-12h-9h-6h-3h-24hNOW1008.3998.51002.6
−24h−18h−12h−6hnow
Pressure climbing out of the rain band — clearing edging in.
Larchmont, NY
Air quality
50
AQI
Good
↓-5 in 6h

AQI 50 (Good), driven by Ozone. AQI down 5 over the last 6 hours (gradual decline). Ozone at AQI 35 now. With UV 7.5 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 35 around 1 PM.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5Good
6.0μg/m³
PM 10Good
6μg/m³
NO₂Good
4μg/m³
OzoneDRIVERModerate
75μg/m³
UV IndexHigh
5.3

What's driving it

Ozone × UV × Sky

Ozone at AQI 35 now. With UV 7.5 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 35 around 1 PM.

Present
AQI 35
UV peak
7.5 at 1 PM
Sky at peak
clear
Projected peak
AQI 35

PM × Wind × Precip

PM2.5 at 6.0 µg/m³, PM10 at 6.2 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.97
Wind
breezy
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).

7-DAY AQI TREND50100MONTUEWEDTHUFRISATSUNMON7-DAY PM2.5 TREND · μg/m³310
Larchmont, NY
Sky cover · visibility · 24h
Cloud cover
0%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
71.6mi
UNLIMITED
116 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
14:30 UTC · Larchmont, NY · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
14:30 UTC · Larchmont, NY · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Larchmont, NY
Satellite · infrared · animated
Larchmont, NY
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Larchmont, NY
Almanac · Monday, June 15
A summer fog for fair, a winter fog for rain.
Civil dawn
4:50 AM
Sunrise
1:22 AM
Daylight
15h 06m
Sunset
4:28 PM
Civil dusk
9:03 PM
Planting note
Stake and prune tomato suckers. Watch for squash vine borers.
Larchmont, NY
The moon
New Moon
1% illuminated
Moonrise
5:21 AM
Moonset
8:43 PM
In sign
♋︎ Cancer
Larchmont, NY
Microseason
Jun 11–15

Solstice approaches — longest light

cultural
Jan 145% of the yearDec 31

Read this microseason across nine climate regions →

Larchmont at a glance

  • Today vs. normal: 72°F — typical for the season
  • Last frost: April 22 (climatological average for this latitude)
  • Microseason: Jun 11–15
  • Planting window: Stake and prune tomato suckers. Watch for squash vine borers.

16-Day Forecast — Larchmont

  1. Mon79°64°88%
  2. Tue80°55°0%
  3. Wed81°65°21%
  4. Thu94°69°50%
  5. Fri83°72°19%
  6. Sat79°62°10%
  7. Sun80°63°8%
  8. Mon71°58°33%
  9. Tue81°58°33%
  10. Wed82°60°20%
  11. Thu81°66°17%
  12. Fri80°65°28%
  13. Sat87°65°29%
  14. Sun85°71°20%
  15. Mon95°72°23%
  16. Tue92°74°29%

Forecast data from Open-Meteo (CC BY 4.0).

Right now in the garden

Peak growing season

As of June 15, 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.

January 1–5: The year turns in silence.January 6–10: Ice thickens on still water.January 11–15: Shortest shadows lengthen.January 16–20: Pheasants begin to call.January 21–25: Springs begin to thaw.January 26–31: Chickadees announce dawn.February 1–5: East wind softens the frost.February 6–10: Sap begins to rise.February 11–15: First snowdrops appear.February 16–20: Red-winged blackbirds return.February 21–25: Rain begins to replace snow.February 26–28: Skunk cabbage pushes through ice.March 1–5: Ice withdraws from the reservoir.March 6–10: Crocuses open to weak sun.March 11–15: Peepers call from the marsh.March 16–20: Woodcocks spiral at dusk.March 21–25: Equinox — light overtakes dark.March 26–31: Forsythia opens along the fences.April 1–5: Cherry blossoms drift like snow.April 6–10: Warblers appear in the understory.April 11–15: Magnolias bloom and fall in a day.April 16–20: Dogwoods float above the forest.April 21–25: Lilacs perfume the evening.April 26–30: Last frost releases the garden.May 1–5: Warblers flood the Ramble.May 6–10: Tulip poplars light their candles.May 11–15: Shad run up the rivers.May 16–20: Roses open along the stoops.May 21–25: Firefly scouts appear at dusk.May 26–31: Strawberries ripen in the sun.June 1–5: Fireflies rise from the lawn.June 6–10: Elderflowers open in hedgerows.June 11–15: Solstice approaches — longest light.June 16–20: Honeysuckle sweetens the night.June 21–25: Solstice — the sun stands still.June 26–30: Lightning bugs drift through oaks.July 1–5: Cicadas claim the afternoon.July 6–10: Queen Anne's lace lines the roads.July 11–15: Thunder builds each afternoon.July 16–20: Corn reaches for the tassels.July 21–25: Dog days settle in the haze.July 26–31: Katydids begin their chorus.August 1–5: Night falls a minute earlier.August 6–10: Sunflowers face the morning.August 11–15: Goldenrod begins to bloom.August 16–20: Crickets pulse through warm nights.August 21–25: First cool morning surprises.August 26–31: Monarchs stage for flight.September 1–5: School buses reappear.September 6–10: Asters purple the roadsides.September 11–15: Hawk migration over the Hudson.September 16–20: Equinox — dark overtakes light.September 21–25: Apples hang heavy on the branch.September 26–30: Geese begin to chevron south.October 1–5: Witch hazel blooms as others fade.October 6–10: Maples begin to blaze.October 11–15: Frost paints the garden black.October 16–20: Oaks turn bronze and russet.October 21–25: Leaves rattle down the gutters.October 26–31: Clocks fall back — dusk at five.November 1–5: Ginkgos drop overnight.November 6–10: Last leaves cling stubbornly.November 11–15: Juncos arrive from the north.November 16–20: Bare branches reveal the sky.November 21–25: First flurries dust the rooftops.November 26–30: Woodsmoke curls through the block.December 1–5: Darkness settles before dinner.December 6–10: Holly and winterberry persist.December 11–15: Shortest day approaches.December 16–20: Ice begins to form at the edges.December 21–25: Solstice — the sun begins return.December 26–31: The year turns in silence.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

Microseason · June 11–15

Solstice approaches — longest light

Sunrise before 5:30 AM; sunset nearly 8:30 PM.

Day 166 of 365 · Wedge 33 of 72

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
February——
March——
Aprillettuce, peas, spinach, radishes—
Maylettuce, peas, spinach, radishes, tomatoes, peppers, beans, squashlettuce, peas, radishes
Junetomatoes, peppers, beans, squashlettuce, peas, radishes
Julytomatoes, peppers, beans, squashtomatoes, beans, summer squash
August—tomatoes, beans, summer squash
Septemberfall brassicas, garlic (overwinter), carrotstomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
November——
December——

A year in weather

In Larchmont, July runs warmest near 76°F and January coldest around 29°F, while December is the wettest month (4.2 inches) and February the driest (2.9 inches).

MonthMean tempPrecipRainy days
January29°3.5″14
February31°2.9″13
March39°3.6″16
April51°4.0″17
May60°3.9″18
June69°3.8″17
July76°3.6″17
August75°3.9″17
September68°3.4″13
October57°3.3″12
November44°3.9″13
December34°4.2″13

Regional context

Larchmont swings from 29°F in January to 76°F in July (46°F) per NOAA NCEI 1991-2020 normals; precipitation in Larchmont runs about 43.9 inches on roughly 180 measurable days.

No season owns Larchmont's rain: December reaches 4.2 inches across 13.2 days and February keeps 2.9 inches on 13.1, an even spread through Larchmont's year. That even rhythm groups Larchmont with places like New Rochelle, NY, Pelham Manor, NY and Bronxville, NY.

Around mid-April, Larchmont sheds its freezing nights — kale, peas, spinach, and parsnips go into Larchmont's beds. Larchmont's heat-lovers — tomatoes, peppers, squash — hold off until Larchmont's frost risk clears, 10-14 days on. Frost returns to Larchmont near mid-November, ending the tender-crop season. A creek-bottom lot in Larchmont can lag Larchmont's last frost 7-10 days behind a south slope.

Similar climates: New Rochelle, NY, Pelham Manor, NY, Bronxville, NY, Mount Vernon, NY, Tuckahoe, NY.

Frequently asked

When does it freeze in Larchmont?
Larchmont's last spring frost lands near mid-April, and in Larchmont the first fall frost follows around mid-November.
What is the rainy season in Larchmont?
Larchmont sees its heaviest rain in December (around 4.2 inches), part of roughly 44 inches a year.
What is the warmest month in Larchmont?
Larchmont peaks in July, when the mean runs near 76°F.
What is the coldest month in Larchmont?
January is Larchmont's coldest month, averaging about 29°F.
When can I start a vegetable garden in Larchmont?
Hardy spring crops go in near mid-April in Larchmont; tender peppers and squash wait 10–14 days.
How many rainy days does Larchmont get?
Larchmont averages about 180 days with measurable rain or snow each year.
What hardiness zone is Larchmont?
With January around 29°F, Larchmont's zone reflects that minimum — the USDA ZIP map confirms Larchmont's band.
What is the 10-day forecast for Larchmont?
Larchmont's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
Will it rain this week in Larchmont?
See this week's day-by-day rain chances for Larchmont in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Larchmont?
Current conditions for Larchmont and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Larchmont forecast updated?
The Larchmont forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Larchmont?
Day length in Larchmont peaks around the June solstice — earliest sunrise and latest sunset — and is shortest near the December solstice.
How accurate is the weather forecast for Larchmont?
The next few days in Larchmont's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

The warm-summer humid continental climate of Larchmont, New York carries typical Januarys near 29°F and Julys around 76°F — 47°F of seasonal travel.

Rain and snow bring Larchmont roughly 44 inches a year across approximately 180 measurable-precipitation days.

Larchmont sits at 40.9°N; that 47°F seasonal swing frames planting windows and frost dates across Larchmont.

Beaches near Larchmont

Each linked page shows live water temperature, wave height, swim and surf verdicts, tides, and rip-current risk from NDBC + NOAA + NWS data.

All cities in New York →

New Rochelle, NY weather →

ZIP codes in Larchmont

  • 10538

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.