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Westfield, New Jersey Weather

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

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

Westfield, NJ
Sunday, July 5 at 6:21 AM
73
°
Overcast
Feels like
80°
Humidity
91%
Wind
2 mph
Sunrise
1:32 AM
Sunset
4:31 PM
Westfield, NJ
Hour by hour · 24h
24-Hour ForecastWestfield, NJ: 24-hour forecast. Temperatures range from 71 to 85 degrees Fahrenheit with a 77% chance of precipitation at 3 AM.
L 71°H 85°
Westfield, NJ
7-day forecast
  1. Today
    Jul 5
    Rain
    66%
    0.17″
    85°73°—
  2. Monday
    Jul 6
    Heavy Rain
    95%
    0.71″
    74°69°-11°
  3. Tuesday
    Jul 7
    Light Drizzle
    85%
    0.02″
    71°64°-3°
  4. Wednesday
    Jul 8
    Overcast
    22%
    —
    77°64°+6°
  5. Thursday
    Jul 9
    Overcast
    18%
    —
    83°65°+6°
  6. Friday
    Jul 10
    Drizzle
    36%
    —
    85°70°+2°
  7. Saturday
    Jul 11
    Overcast
    23%
    —
    83°65°-2°
Westfield, NJ
Next 24 hours · Mild now
68°78°88°6a12p6p12anow 73°high 85°low 71°PRECIP %
Westfield, NJ
Anemometer · 24h winds · from true
NESW
From · True
WSW
238° · backing 23°
Direction
WSW
238°
Sustained
2
mph
Gust
5
mph
Peak 24h
37
avg 7
Beaufort · 1 · LIGHT AIR
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 37 @ 11:00p
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 158SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Westfield, NJ
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1008.8
+1.0 mb in 3h · rising · 29.79 inHg
Now
1008.8
mb
3h
+1.0
mb
12h
+2.9
mb
24h
+0.7
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1006–1011
1000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR-21h-18h-15h-12h-9h-6h-3h-24hNOW1010.61005.61008.6
−24h−18h−12h−6hnow
Pressure climbing out of the rain band — clearing edging in.
Westfield, NJ
Air quality
33
AQI
Good
↓-15 in 6h▲Peak ~41 @ 4 PM

AQI 33 (Good), driven by Ozone. AQI down 15 over the last 6 hours — air quality is improving sharply. Ozone at AQI 34. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 4 PM.

PM 2.5Good
5.7μg/m³
PM 10Good
6μg/m³
NO₂Good
10μg/m³
OzoneDRIVERModerate
72μg/m³
UV IndexLow
0.1

What's driving it

Ozone × UV × Sky

Ozone at AQI 34. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.

Present
AQI 34
UV peak
0.3 at 1 PM
Sky at peak
overcast
Projected peak
AQI 4

PM × Wind × Precip

PM2.5 at 5.7 µg/m³ (AQI 32) with a 0.98 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.

PM2.5/PM10
0.98
Wind
calm
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/m³640
Westfield, NJ
Sky cover · visibility · 24h
Cloud cover
100%
OVERCAST
100%0%−24h−18h−12h−6hnow
Visibility
28.1mi
UNLIMITED
107 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
10:21 UTC · Westfield, NJ · 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
10:21 UTC · Westfield, NJ · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Westfield, NJ
Satellite · infrared · animated
Westfield, NJ
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Westfield, NJ
Almanac · Sunday, July 5
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:00 AM
Sunrise
1:32 AM
Daylight
14h 59m
Sunset
4:31 PM
Civil dusk
9:05 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Westfield, NJ
The moon
Waning Gibbous
74% illuminated
Moonrise
11:15 PM
Moonset
11:06 AM
In sign
♓︎ Pisces
Westfield, NJ
Microseason
Jul 1–5

Cicadas claim the afternoon

fish
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Westfield at a glance

  • Today vs. normal: 73°F — typical for the season
  • 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 code: 07090

15-Day Forecast — Westfield

  1. Sun85°73°66%
  2. Mon74°69°95%
  3. Tue71°64°85%
  4. Wed77°64°22%
  5. Thu83°65°18%
  6. Fri85°70°36%
  7. Sat83°65°23%
  8. Sun80°65°23%
  9. Mon72°62°19%
  10. Tue85°63°13%
  11. Wed83°67°15%
  12. Thu90°68°33%
  13. Fri81°70°27%
  14. Sat83°68°33%
  15. Sun91°69°32%

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 — Westfield

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

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

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 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 Westfield's warmest stretch (~75°F) and January its coldest (~29°F); precipitation crests in December at 4.3 inches and ebbs in February to 3.0 inches.

MonthMean tempPrecipRainy days
January29°3.6″13
February31°3.0″13
March39°3.8″16
April51°4.1″17
May59°3.9″18
June69°3.9″17
July75°3.8″17
August74°4.2″17
September67°3.7″14
October57°3.3″12
November43°3.9″13
December34°4.3″13

Regional context

Westfield's climate, from NOAA NCEI 1991-2020 station normals, pairs 29°F Januarys with 75°F Julys — a 46°F swing. About 45.4 inches of precipitation falls over roughly 180 days a year.

Westfield's precipitation spreads evenly: December peaks at 4.3 inches on 13.2 wet days, while February holds 3.0 inches over 12.9 — no month dominates Westfield's rain calendar. That lines Westfield up with places like Garwood, NJ, Cranford, NJ and Mountainside, NJ, fed by overlapping storm tracks.

Westfield's growing window opens around mid-April, once Westfield's overnight lows stop freezing — sow kale, peas, spinach, and parsnips. Warm-soil crops in Westfield wait about two weeks past Westfield's last frost, once the soil warms. Westfield's window closes around mid-November as overnight lows return below freezing. Within Westfield, cold-air pooling chills low spots by 5-10°F, shifting Westfield's local frost dates.

Similar climates: Garwood, NJ, Cranford, NJ, Mountainside, NJ, Fanwood, NJ, Kenilworth, NJ.

Frequently asked

When does it freeze in Westfield?
In Westfield, expect the last spring frost near mid-April; Westfield's first autumn frost comes around mid-November.
What is the rainy season in Westfield?
Rainfall in Westfield peaks in December near 4.3 inches, out of about 45 inches annually.
What is the warmest month in Westfield?
On average July tops the year in Westfield at about 75°F.
What is the coldest month in Westfield?
The coldest stretch in Westfield falls in January, around 29°F on average.
When can I start a vegetable garden in Westfield?
Around mid-April, start frost-hardy crops in Westfield; tomatoes and basil belong a fortnight later.
How many rainy days does Westfield get?
Westfield averages about 180 days with measurable rain or snow each year.
What hardiness zone is Westfield?
Since January in Westfield averages 29°F, Westfield's USDA zone follows that floor — confirm it by ZIP.
What is the 10-day forecast for Westfield?
Westfield'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 Westfield?
See this week's day-by-day rain chances for Westfield in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Westfield?
Current conditions for Westfield and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Westfield forecast updated?
The Westfield forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Westfield?
Today's sunrise and sunset times for Westfield 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 Westfield?
The next few days in Westfield'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 Westfield, New Jersey carries typical Januarys near 29°F and Julys around 75°F — 46°F of seasonal travel.

In a typical year Westfield records about 45 inches of precipitation on around 180 days.

From 40.7°N, Westfield sees a 46°F seasonal swing that governs Westfield's planting and frost windows.

Beaches near Westfield

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 Jersey →

Newark, NJ weather →

ZIP codes in Westfield

  • 07090

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.