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

Worcester, Massachusetts Weather

Night falls a minute earlier. Day 43 of summer. Read this microseason across nine climate regions →

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

Worcester, MA
Sunday, August 2 at 10:56 AM
78
°
Overcast
Feels like
85°
Humidity
77%
Wind
8 mph
Sunrise
1:41 AM
Sunset
4:05 PM
Worcester, MA
Hour by hour · 24h
24-Hour ForecastWorcester, MA: 24-hour forecast. Temperatures range from 71 to 82 degrees Fahrenheit with a 66% chance of precipitation at 9 AM.
L 71°H 82°
Worcester, MA
7-day forecast
  1. Today
    Aug 2
    Overcast
    —
    —
    82°70°—
  2. Monday
    Aug 3
    Heavy Showers
    66%
    1.4″
    80°68°-2°
  3. Tuesday
    Aug 4
    Overcast
    22%
    —
    85°60°+5°
  4. Wednesday
    Aug 5
    Showers
    19%
    0.39″
    77°62°-8°
  5. Thursday
    Aug 6
    Drizzle
    30%
    0.01″
    87°70°+10°
  6. Friday
    Aug 7
    Thunderstorm
    33%
    0.02″
    92°70°+5°
  7. Saturday
    Aug 8
    Drizzle
    32%
    —
    89°68°-3°
Worcester, MA
Next 24 hours · Mild now
68°77°86°12p6p12a6anow 76°high 82°low 71°PRECIP %
Worcester, MA
Anemometer · 24h winds · from true
NESW
From · True
S
185° · backing 22°
Direction
S
185°
Sustained
8
mph
Gust
15
mph
Peak 24h
21
avg 5 mph
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 5 mph · pk 21 mph @ 1:00a
0102030MPHB1B2B3B4B5B6B7-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 2812SUSTGUST
−24h−18h−12h−6hnow
Light breeze backing 22° from the s.
Worcester, MA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
997.6
+0.6 mb in 3h · rising · 29.46 inHg
Now
997.6
mb
3h
+0.6
mb
12h
+1.5
mb
24h
+1.2
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 996–998
9909951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW998.3995.9998.3
Deep low — expect rough seas, strong wind, and persistent rain.
Worcester, MA
Air quality
41
AQI
Good
↓-8 in 6h▲Peak ~47 @ 9 PM

AQI 41 (Good), driven by PM2.5. AQI down 8 over the last 6 hours (gradual decline). PM2.5 at 10.1 µg/m³, PM10 at 12.1 µg/m³ — typical background levels with no transport signature.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 9 PM.

PM 2.5DRIVERGood
10.1μg/m³
PM 10Good
12μg/m³
NO₂Good
2μg/m³
OzoneModerate
92μg/m³
UV IndexModerate
3.2

What's driving it

Ozone × UV × Sky

Ozone at AQI 43. Overcast through the UV peak window (cloud cover ~95%) — afternoon ozone should stay flat.

Present
AQI 43
UV peak
4.5 at 1 PM
Sky at peak
overcast
Projected peak
AQI 13

PM × Wind × Precip

PM2.5 at 10.1 µg/m³, PM10 at 12.1 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.83
Wind
light
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 TREND50100SUNMONTUEWEDTHUFRISATSUN7-DAY PM2.5 TREND · μg/m³350
Worcester, MA
Sky cover · visibility · 24h
Cloud cover
91%
OVERCAST
100%0%−24h−18h−12h−6hnow
Visibility
44.6mi
UNLIMITED
92 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
14:56 UTC · Worcester, MA · 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
14:56 UTC · Worcester, MA · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Worcester, MA
Satellite · infrared · animated
Worcester, MA
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Worcester, MA
Almanac · Sunday, August 2
Red sky at night, sailor's delight.
Civil dawn
5:10 AM
Sunrise
1:41 AM
Daylight
14h 24m
Sunset
4:05 PM
Civil dusk
8:38 PM
Planting note
Sow fall peas. Start kale and collard seedlings for fall.
Worcester, MA
The moon
Waning Gibbous
84% illuminated
Moonrise
9:30 PM
Moonset
9:49 AM
In sign
♓︎ Pisces
Worcester, MA
Microseason
Aug 1–5

Night falls a minute earlier

celestial
Jan 159% of the yearDec 31

Read this microseason across nine climate regions →

Worcester at a glance

  • Today vs. normal: 18°F above the seasonal normal for this latitude
  • Last frost: April 30 (climatological average for this latitude)
  • Microseason: Aug 1–5
  • Planting window: Sow fall peas. Start kale and collard seedlings for fall.

ZIP codes: 01602, 01603, 01604, 01605, 01606, 01607, 01608, 01609 +1 more

16-Day Forecast — Worcester

  1. Sun82°70°2%
  2. Mon80°68°66%
  3. Tue85°60°22%
  4. Wed77°62°19%
  5. Thu87°70°30%
  6. Fri92°70°33%
  7. Sat89°68°32%
  8. Sun92°69°27%
  9. Mon95°69°26%
  10. Tue80°62°12%
  11. Wed78°55°9%
  12. Thu68°59°30%
  13. Fri83°64°40%
  14. Sat80°64°33%
  15. Sun91°67°21%
  16. Mon88°62°26%

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

Live wind & temperature near Worcester

Right now in the garden

Peak growing season

As of August 2, 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 — Worcester

SPC has placed Worcester in the Marginal Risk category for severe thunderstorms tomorrow.

  • TODAYTSTMGeneral Thunderstorms
  • TOMORROWMRGLMarginal Risk
  • DAY 3TSTMGeneral Thunderstorms

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.

Sun & seasons in Worcester

Worcester sits in Worcester County, where the year’s longest day runs 15h 16m of daylight and its shortest just 9h 5m — a swing of +6h 11m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.

Boston, the state’s largest city, lies about 37 miles to the E. The nearest town Worcester tracks is Boston, roughly 37 miles to the E.

Air quality in Worcester’s county has trended cleaner since 2020; its cleanest year on record was 2024 (median AQI 37). See the full air-quality history for Worcester.

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 · August 1–5

Night falls a minute earlier

Sunset retreats perceptibly — daylight shortening speeds up.

Day 214 of 365 · Wedge 43 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——
April——
Maylettuce, peas, spinach, radisheslettuce, peas, radishes
Junelettuce, peas, spinach, radishes, tomatoes, peppers, beans, squashlettuce, peas, radishes
Julytomatoes, peppers, beans, squashtomatoes, beans, summer squash
Augusttomatoes, peppers, beans, squash, fall brassicas, garlic (overwinter), carrotstomatoes, beans, summer squash
Septemberfall brassicas, garlic (overwinter), carrotstomatoes, beans, summer squash
October—winter squash, tomatoes (last)
November——
December——

A year in weather

In Worcester, July runs warmest near 71°F and January coldest around 25°F, while October is the wettest month (4.8 inches) and February the driest (3.3 inches).

MonthMean tempPrecipRainy days
January25°3.5″7
February27°3.3″7
March35°4.2″7
April46°4.1″8
May57°3.6″8
June65°4.2″8
July71°3.9″7
August69°4.1″6
September62°4.2″6
October51°4.8″7
November40°4.0″7
December31°4.3″8

Regional context

Worcester swings from 25°F in January to 71°F in July (46°F) per NOAA NCEI 1991-2020 normals; precipitation in Worcester runs about 48.3 inches on roughly 84 measurable days.

Rainfall in Worcester stays even across the calendar: October tops out at 4.8 inches over 6.8 rainy days, and February still logs 3.3 inches across 6.6 — a narrow range for Worcester. That lines Worcester up with places like Whitinsville, MA, South Lancaster, MA and East Douglas, MA, fed by overlapping storm tracks.

Once Worcester passes late-May, overnight freezes fade and kale, peas, spinach, and parsnips can be sown. Tomatoes and peppers do best set out two weeks later in Worcester, once nights clear the mid-40s°F. The season ends by early-October in Worcester, once hard frosts set back in. Worcester's low ground holds frost later into spring than Worcester's benches, which run 3-5 days ahead.

Similar climates: Whitinsville, MA, South Lancaster, MA, East Douglas, MA, Marlborough, MA, Cordaville, MA.

Naturalist notes

Late May brings the return of wood warblers to Worcester's forests as these migrants complete their spring journey north.

Apple trees across the region finish blooming by mid-May, their petals carpeting orchard floors as young fruit begins to set.

Frequently asked

When does it freeze in Worcester?
Worcester's last spring frost lands near mid-May, and in Worcester the first fall frost follows around mid-October.
What is the rainy season in Worcester?
October is the wettest month in Worcester, about 4.8 inches on average; the year totals roughly 48 inches.
What is the warmest month in Worcester?
The warmest stretch in Worcester comes in July, around 71°F on average.
What is the coldest month in Worcester?
On average January is the chilliest month in Worcester, about 25°F.
When can I start a vegetable garden in Worcester?
Time tomatoes in Worcester for two weeks after mid-May; peas and greens start at Worcester's frost line.
How many rainy days does Worcester get?
Worcester records around 84 days of measurable precipitation annually.
What hardiness zone is Worcester?
Worcester sits in the USDA zone set by January lows near 25°F; the USDA ZIP tool gives the band.
What is the 10-day forecast for Worcester?
Worcester'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 Worcester?
See this week's day-by-day rain chances for Worcester in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Worcester?
Current conditions for Worcester and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Worcester forecast updated?
The Worcester forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Worcester?
Today's sunrise and sunset times for Worcester 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 Worcester?
The next few days in Worcester's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Worcester, Massachusetts has a warm-summer humid continental climate: January averages roughly 25°F, July about 71°F, 46°F between them.

Worcester sees close to 48 inches of precipitation annually, falling across some 84 wet days.

At 42.3°N, Worcester's 46°F summer-to-winter swing sets when Worcester's gardens wake and when frost returns.

All cities in Massachusetts →

Boston, MA weather →

ZIP codes in Worcester

  • 01608
  • 01610
  • 01609
  • 01602
  • 01603
  • 01604
  • 01605
  • 01606
  • 01607
  • 01601
  • 01613
  • 01614
  • 01615
  • 01653
  • 01655

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.