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

Valley Stream, New York Weather

Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →

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

Valley Stream, NY
Saturday, July 4 at 4:03 PM
97
°
Clear
Feels like
100°
Humidity
35%
Wind
11 mph
Sunrise
1:29 AM
Sunset
4:29 PM
Valley Stream, NY
Hour by hour · 24h
24-Hour ForecastValley Stream, NY: 24-hour forecast. Temperatures range from 73 to 98 degrees Fahrenheit with a 41% chance of precipitation at 12 AM.
L 73°H 98°
Valley Stream, NY
7-day forecast
  1. Today
    Jul 4
    Rain
    39%
    0.12″
    98°75°—
  2. Sunday
    Jul 5
    Heavy Rain
    50%
    0.85″
    87°71°-11°
  3. Monday
    Jul 6
    Light Showers
    88%
    0.07″
    73°71°-14°
  4. Tuesday
    Jul 7
    Light Drizzle
    79%
    0.02″
    72°65°-1°
  5. Wednesday
    Jul 8
    Overcast
    18%
    —
    82°64°+10°
  6. Thursday
    Jul 9
    Overcast
    10%
    —
    88°72°+6°
  7. Friday
    Jul 10
    Overcast
    42%
    —
    92°77°+4°
Valley Stream, NY
Next 24 hours · Hot now
HOT 90°65°85°105°12p6p12a6anow 97°high 98°low 73°PRECIP %
Valley Stream, NY
Anemometer · 24h winds · from true
NESW
From · True
W
275° · veering 57°
Direction
W
275°
Sustained
11
mph
Gust
15
mph
Peak 24h
24
avg 7
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 7 · pk 24 @ 9:00p
0102030MPHB1B2B3B4B5B6B7-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 299SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 57° from the w.
Valley Stream, NY
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1011.1
-0.4 mb in 3h · steady · 29.86 inHg
Now
1011.1
mb
3h
-0.4
mb
12h
-0.6
mb
24h
-0.1
mb
Regime · CHANGE
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1011–1013
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1012.61010.61011.1
−24h−18h−12h−6hnow
Air sits at the threshold — small shifts decide the day.
Valley Stream, NY
Air quality
109
AQI
Unhealthy for Sensitive Groups
↑+50 in 6h▲Peak ~152 @ 11 PM

AQI 109 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 50 in the last 6 hours — air quality is degrading. Ozone at AQI 166 — peak already passed at 1 PM under clear skies. Levels should ease through evening.

CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.

PM 2.5Moderate
16.5μg/m³
PM 10Good
19μg/m³
NO₂Good
5μg/m³
OzoneDRIVERUnhealthy
180μg/m³
UV IndexModerate
4.3

What's driving it

Ozone × UV × Sky

Ozone at AQI 166 — peak already passed at 1 PM under clear skies. Levels should ease through evening.

Present
AQI 166
UV peak
3.9 at earlier today
Sky at peak
clear
Projected peak
AQI 166

PM × Wind × Precip

PM2.5 at 16.5 µg/m³, PM10 at 19.0 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.87
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 TREND50100SATSUNMONTUEWEDTHUFRISAT7-DAY PM2.5 TREND · μg/m³740
Valley Stream, NY
Sky cover · visibility · 24h
Cloud cover
0%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
102.7mi
UNLIMITED
104 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
20:03 UTC · Valley Stream, 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
20:03 UTC · Valley Stream, NY · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Valley Stream, NY
Satellite · infrared · animated
Valley Stream, NY
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Valley Stream, NY
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
4:57 AM
Sunrise
1:29 AM
Daylight
15h 00m
Sunset
4:29 PM
Civil dusk
9:03 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Valley Stream, NY
The moon
Waning Gibbous
79% illuminated
Moonrise
10:49 PM
Moonset
9:57 AM
In sign
♓︎ Pisces
Valley Stream, NY
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Valley Stream at a glance

  • Today vs. normal: 26°F above the seasonal normal for this latitude
  • Last frost: April 20 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP codes: 11580, 11581

16-Day Forecast — Valley Stream

  1. Sat98°75°39%
  2. Sun87°71°50%
  3. Mon73°71°88%
  4. Tue72°65°79%
  5. Wed82°64°18%
  6. Thu88°72°10%
  7. Fri92°77°42%
  8. Sat91°78°39%
  9. Sun87°74°22%
  10. Mon77°68°19%
  11. Tue82°70°23%
  12. Wed87°70°25%
  13. Thu94°74°45%
  14. Fri94°76°42%
  15. Sat93°77°35%
  16. Sun93°79°42%

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

Right now in the garden

Peak growing season

As of July 4, 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 — Valley Stream

SPC has placed Valley Stream in the Slight Risk category for severe thunderstorms today.

  • TODAYSLGTSlight Risk
  • TOMORROWMRGLMarginal Risk
  • DAY 3TSTMGeneral Thunderstorms

Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.

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 185 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

In Valley Stream, July runs warmest near 76°F and January coldest around 31°F, while December is the wettest month (4.3 inches) and February the driest (3.0 inches).

MonthMean tempPrecipRainy days
January31°3.6″13
February33°3.0″13
March40°3.8″15
April50°4.0″17
May59°3.8″18
June69°3.6″16
July76°3.3″16
August75°4.0″17
September69°3.4″13
October58°3.3″11
November45°4.0″13
December36°4.3″13

Regional context

Valley Stream's climate, from NOAA NCEI 1991-2020 station normals, pairs 31°F Januarys with 76°F Julys — a 44°F swing. About 44 inches of precipitation falls over roughly 175 days a year.

No season owns Valley Stream's rain: December reaches 4.3 inches across 13.4 days and February keeps 3.0 inches on 12.8, an even spread through Valley Stream's year. That even rhythm groups Valley Stream with places like South Valley Stream, NY, North Valley Stream, NY and North Lynbrook, NY.

Valley Stream's growing window opens around mid-April, once Valley Stream's overnight lows stop freezing — sow peas, lettuce, spinach, and radishes. Hold Valley Stream's tender crops — tomatoes, peppers, basil — until 10-14 days past Valley Stream's last frost. It shuts near mid-November, when freezes return to Valley Stream and tender plants need cover. In Valley Stream, low spots run 4-7°F colder than nearby slopes, nudging Valley Stream's frost dates a week.

Similar climates: South Valley Stream, NY, North Valley Stream, NY, North Lynbrook, NY, Hewlett, NY, Lynbrook, NY.

Frequently asked

When does it freeze in Valley Stream?
Valley Stream's last spring frost lands near mid-April, and in Valley Stream the first fall frost follows around mid-November.
What is the rainy season in Valley Stream?
December is the wettest month in Valley Stream, about 4.3 inches on average; the year totals roughly 44 inches.
What is the warmest month in Valley Stream?
July is Valley Stream's warmest month, averaging about 76°F.
What is the coldest month in Valley Stream?
Valley Stream bottoms out in January, with a mean near 31°F.
When can I start a vegetable garden in Valley Stream?
Time tomatoes in Valley Stream for two weeks after mid-April; peas and greens start at Valley Stream's frost line.
How many rainy days does Valley Stream get?
Valley Stream records around 175 days of measurable precipitation annually.
What hardiness zone is Valley Stream?
Valley Stream's hardiness zone tracks its winter low; with January near 31°F, check the USDA ZIP map for the exact zone.
What is the 10-day forecast for Valley Stream?
Valley Stream'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 Valley Stream?
See this week's day-by-day rain chances for Valley Stream in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Valley Stream?
Current conditions for Valley Stream and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Valley Stream forecast updated?
The Valley Stream forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Valley Stream?
Today's sunrise and sunset times for Valley Stream 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 Valley Stream?
The next few days in Valley Stream's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Valley Stream, New York has a warm-summer humid continental climate: January averages roughly 31°F, July about 76°F, 45°F between them.

Valley Stream sees close to 44 inches of precipitation annually, falling across some 175 wet days.

Latitude 40.7°N gives Valley Stream its 45°F swing, and with it the rhythm of Valley Stream's growing season.

Beaches near Valley Stream

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 →

Queens, NY weather →

ZIP codes in Valley Stream

  • 11580
  • 11581
  • 11582

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.