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Cold Spring Harbor, New York Weather

Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →

Cold Spring Harbor weather forecast — hour by hour, 7-day outlook, NOAA radar

Cold Spring Harbor, NY
Sunday, July 5 at 6:18 PM
80
°
Overcast
Feels like
88°
Humidity
78%
Wind
5 mph
Sunrise
1:28 AM
Sunset
4:28 PM
Cold Spring Harbor, NY
Hour by hour · 24h
24-Hour ForecastCold Spring Harbor, NY: 24-hour forecast. Temperatures range from 66 to 80 degrees Fahrenheit with a 78% chance of precipitation at 1 AM.
L 66°H 80°
Cold Spring Harbor, NY
7-day forecast
  1. Today
    Jul 5
    Heavy Drizzle
    56%
    0.06″
    80°72°—
  2. Monday
    Jul 6
    Heavy Rain
    78%
    1.5″
    72°64°-8°
  3. Tuesday
    Jul 7
    Drizzle
    61%
    0.05″
    67°63°-5°
  4. Wednesday
    Jul 8
    Overcast
    21%
    —
    82°62°+15°
  5. Thursday
    Jul 9
    Overcast
    19%
    —
    84°69°+2°
  6. Friday
    Jul 10
    Drizzle
    35%
    0.01″
    83°72°-1°
  7. Saturday
    Jul 11
    Overcast
    28%
    —
    84°69°+1°
Cold Spring Harbor, NY
Next 24 hours · Mild now
62°73°84°6p12a6a12pnow 80°high 80°low 66°PRECIP %
Cold Spring Harbor, NY
Anemometer · 24h winds · from true
NESW
From · True
ESE
104° · backing 136°
Direction
ESE
104°
Sustained
5
mph
Gust
6
mph
Peak 24h
16
avg 5
Beaufort · 2 · LIGHT 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 5 · pk 16 @ 1:00a
0102030MPHB1B2B3B4B5B6B7-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 2914SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Cold Spring Harbor, NY
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1006.4
-0.7 mb in 3h · falling · 29.72 inHg
Now
1006.4
mb
3h
-0.7
mb
12h
+1.4
mb
24h
+4.9
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1002–1007
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR-21h-18h-15h-12h-9h-6h-3h-24hNOW1007.41001.51006.4
−24h−18h−12h−6hnow
Damp, unsettled regime — wet weather lingers nearby.
Cold Spring Harbor, NY
Air quality
66
AQI
Moderate
→+3 in 6h

AQI 66 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 16.8 µg/m³ (AQI 65) with a 0.90 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.

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

PM 2.5DRIVERModerate
16.8μg/m³
PM 10Good
19μg/m³
NO₂Good
13μg/m³
OzoneUnhealthy SG
105μg/m³
UV IndexLow
0.3

What's driving it

Ozone × UV × Sky

Ozone at AQI 50 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.

Present
AQI 50
UV peak
0.2 at earlier today
Sky at peak
overcast
Projected peak
AQI 50

PM × Wind × Precip

PM2.5 at 16.8 µg/m³ (AQI 65) with a 0.90 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.

PM2.5/PM10
0.90
Wind
light
Recent rain
0h in last 6h
Pattern
stagnant smoke

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 TREND50100SUNMONTUEWEDTHUFRISATSUN7-DAY PM2.5 TREND · μg/m³740
Cold Spring Harbor, NY
Sky cover · visibility · 24h
Cloud cover
100%
OVERCAST
100%0%−24h−18h−12h−6hnow
Visibility
38.7mi
UNLIMITED
96 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
22:18 UTC · Cold Spring Harbor, 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
22:18 UTC · Cold Spring Harbor, NY · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Cold Spring Harbor, NY
Satellite · infrared · animated
Cold Spring Harbor, NY
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Cold Spring Harbor, NY
Almanac · Sunday, July 5
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
4:55 AM
Sunrise
1:28 AM
Daylight
15h 00m
Sunset
4:28 PM
Civil dusk
9:02 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Cold Spring Harbor, NY
The moon
Waning Gibbous
69% illuminated
Moonrise
11:11 PM
Moonset
11:03 AM
In sign
♓︎ Pisces
Cold Spring Harbor, NY
Microseason
Jul 1–5

Cicadas claim the afternoon

fish
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Cold Spring Harbor at a glance

  • Today vs. normal: 9°F above the seasonal normal for this latitude
  • Last frost: April 21 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 11724

16-Day Forecast — Cold Spring Harbor

  1. Sun80°72°56%
  2. Mon72°64°78%
  3. Tue67°63°61%
  4. Wed82°62°21%
  5. Thu84°69°19%
  6. Fri83°72°35%
  7. Sat84°69°28%
  8. Sun80°70°16%
  9. Mon83°70°19%
  10. Tue79°69°19%
  11. Wed81°67°16%
  12. Thu79°69°32%
  13. Fri89°70°23%
  14. Sat85°73°24%
  15. Sun75°70°26%
  16. Mon70°67°27%

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

Right now in the garden

Peak growing season

As of July 5, 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.

SPC Convective Outlook

Storm Prediction Center — Cold Spring Harbor

SPC has placed Cold Spring Harbor in the Marginal Risk category for severe thunderstorms today.

  • TODAYMRGLMarginal Risk
  • TOMORROWTSTMGeneral Thunderstorms
  • DAY 3NONENo severe risk

Isolated severe storms possible. Limited threat for hail or damaging wind.

Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.

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 · July 1–5

Cicadas claim the afternoon

Annual cicada buzz begins, peaking in the heat of the day.

Day 186 of 365 · Wedge 37 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

July is Cold Spring Harbor's warmest stretch (~75°F) and January its coldest (~32°F); precipitation crests in September at 3.7 inches and ebbs in February to 2.0 inches.

MonthMean tempPrecipRainy days
January32°2.7″5
February34°2.0″5
March40°3.5″6
April50°3.6″6
May60°3.2″7
June69°3.5″7
July75°3.0″5
August74°3.3″6
September67°3.7″5
October56°3.4″5
November46°2.9″6
December38°3.6″7

Regional context

Drawing on NOAA NCEI 1991-2020 normals, Cold Spring Harbor's January averages 32°F and July 75°F — 43°F apart — while precipitation totals roughly 38.3 inches over some 69 days.

Cold Spring Harbor's precipitation spreads evenly: September peaks at 3.7 inches on 5.1 wet days, while February holds 2.0 inches over 4.7 — no month dominates Cold Spring Harbor's rain calendar. That lines Cold Spring Harbor up with places like Laurel Hollow, NY, Halesite, NY and Huntington Station, NY, fed by overlapping storm tracks.

By mid-April the frosts ease in Cold Spring Harbor, opening the season for peas, lettuce, spinach, and radishes. Warm-soil crops in Cold Spring Harbor wait about two weeks past Cold Spring Harbor's last frost, once the soil warms. Cold Spring Harbor's window closes around mid-November as overnight lows return below freezing. Within Cold Spring Harbor, cold-air pooling chills low spots by 5-10°F, shifting Cold Spring Harbor's local frost dates.

Similar climates: Laurel Hollow, NY, Halesite, NY, Huntington Station, NY, Oyster Bay Cove, NY, Cove Neck, NY.

Frequently asked

When does it freeze in Cold Spring Harbor?
Cold Spring Harbor's last spring frost lands near mid-April, and in Cold Spring Harbor the first fall frost follows around mid-November.
What is the rainy season in Cold Spring Harbor?
Rainfall in Cold Spring Harbor peaks in September near 3.7 inches, out of about 38 inches annually.
What is the warmest month in Cold Spring Harbor?
July is Cold Spring Harbor's warmest month, averaging about 75°F.
What is the coldest month in Cold Spring Harbor?
Cold Spring Harbor bottoms out in January, with a mean near 32°F.
When can I start a vegetable garden in Cold Spring Harbor?
Cold Spring Harbor's last frost (mid-April) cues hardy greens; in Cold Spring Harbor, hold heat-lovers two weeks past.
How many rainy days does Cold Spring Harbor get?
Cold Spring Harbor averages about 69 days with measurable rain or snow each year.
What hardiness zone is Cold Spring Harbor?
Cold Spring Harbor sits in the USDA zone set by January lows near 32°F; the USDA ZIP tool gives the band.
What is the 10-day forecast for Cold Spring Harbor?
Cold Spring Harbor'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 Cold Spring Harbor?
See this week's day-by-day rain chances for Cold Spring Harbor in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Cold Spring Harbor?
Current conditions for Cold Spring Harbor and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Cold Spring Harbor forecast updated?
The Cold Spring Harbor forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Cold Spring Harbor?
Today's sunrise and sunset times for Cold Spring Harbor are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
How accurate is the weather forecast for Cold Spring Harbor?
The next few days in Cold Spring Harbor's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Cold Spring Harbor's warm-summer humid continental climate in New York pairs 32°F Januarys with 75°F Julys, 43°F apart across the seasons.

In a typical year Cold Spring Harbor records about 38 inches of precipitation on around 69 days.

At 40.9°N, Cold Spring Harbor's 43°F summer-to-winter swing sets when Cold Spring Harbor's gardens wake and when frost returns.

Beaches near Cold Spring Harbor

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 →

Levittown, NY weather →

ZIP codes in Cold Spring Harbor

  • 11724

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.