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

Westbrook, Maine Weather

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

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

Westbrook, ME
Sunday, July 5 at 9:15 AM
75
°
Clear
Feels like
77°
Humidity
54%
Wind
4 mph
Sunrise
1:06 AM
Sunset
4:25 PM
Westbrook, ME
Hour by hour · 24h
24-Hour ForecastWestbrook, ME: 24-hour forecast. Temperatures range from 62 to 84 degrees Fahrenheit.
L 62°H 84°
Westbrook, ME
7-day forecast
  1. Today
    Jul 5
    Overcast
    —
    —
    84°61°—
  2. Monday
    Jul 6
    Overcast
    —
    —
    76°61°-8°
  3. Tuesday
    Jul 7
    Rain
    33%
    0.91″
    61°56°-15°
  4. Wednesday
    Jul 8
    Overcast
    17%
    —
    78°52°+17°
  5. Thursday
    Jul 9
    Overcast
    15%
    —
    89°62°+11°
  6. Friday
    Jul 10
    Overcast
    44%
    —
    82°69°-7°
  7. Saturday
    Jul 11
    Overcast
    15%
    —
    78°58°-4°
Westbrook, ME
Next 24 hours · Mild now
HOT 90°55°73°90°6a12p6p12anow 74°high 84°low 62°
Westbrook, ME
Anemometer · 24h winds · from true
NESW
From · True
NNW
344° · veering 67°
Direction
NNW
344°
Sustained
4
mph
Gust
7
mph
Peak 24h
20
avg 8
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 8 · pk 20 @ 4:00p
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 143SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Westbrook, ME
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1011.2
+1.3 mb in 3h · rising · 29.86 inHg
Now
1011.2
mb
3h
+1.3
mb
12h
+4.9
mb
24h
+6.4
mb
Regime · CHANGE
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1004–1011
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1011.11003.91011.1
−24h−18h−12h−6hnow
Pressure climbing through the change line — drier air pushing in.
Westbrook, ME
Air quality
52
AQI
Moderate
↑+13 in 6h▲Peak ~59 @ 7 PM

AQI 52 (Moderate), driven by PM2.5. AQI up 13 over the last 6 hours (gradual rise). PM2.5 at 17.9 µg/m³ (AQI 67) with a 0.96 fine-to-coarse ratio and 4 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 during the projected peak around 7 PM.

PM 2.5DRIVERModerate
17.9μg/m³
PM 10Good
19μg/m³
NO₂Good
3μg/m³
OzoneModerate
77μg/m³
UV IndexModerate
3.2

What's driving it

Ozone × UV × Sky

Ozone at AQI 36 now. With UV 6.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 31 around 1 PM.

Present
AQI 36
UV peak
6.4 at 1 PM
Sky at peak
clear
Projected peak
AQI 31

PM × Wind × Precip

PM2.5 at 17.9 µg/m³ (AQI 67) with a 0.96 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.

PM2.5/PM10
0.96
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/m³430
Westbrook, ME
Sky cover · visibility · 24h
Cloud cover
0%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
71.1mi
UNLIMITED
105 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
13:15 UTC · Westbrook, ME · 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
13:15 UTC · Westbrook, ME · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Westbrook, ME
Satellite · infrared · animated
Westbrook, ME
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Westbrook, ME
Almanac · Sunday, July 5
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
4:31 AM
Sunrise
1:06 AM
Daylight
15h 19m
Sunset
4:25 PM
Civil dusk
9:02 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Westbrook, ME
The moon
Waning Gibbous
72% illuminated
Moonrise
11:00 PM
Moonset
10:49 AM
In sign
♓︎ Pisces
Westbrook, ME
Microseason
Jul 1–5

Cicadas claim the afternoon

fish
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Westbrook at a glance

  • Today vs. normal: 7°F above the seasonal normal for this latitude
  • Last frost: May 8 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 04092

16-Day Forecast — Westbrook

  1. Sun84°61°2%
  2. Mon76°61°5%
  3. Tue61°56°33%
  4. Wed78°52°17%
  5. Thu89°62°15%
  6. Fri82°69°44%
  7. Sat78°58°15%
  8. Sun75°59°12%
  9. Mon73°55°19%
  10. Tue80°57°20%
  11. Wed90°69°19%
  12. Thu84°62°27%
  13. Fri89°59°29%
  14. Sat93°68°21%
  15. Sun80°63°26%
  16. Mon81°63°42%

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.

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——
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

Westbrook's warmest month is July (~70°F mean) and its coldest is January (~24°F). Rainfall peaks in October (5.3 inches) and bottoms out in July (3.4 inches).

MonthMean tempPrecipRainy days
January24°3.5″7
February26°3.5″7
March34°4.1″7
April45°4.4″7
May55°3.7″7
June64°4.2″7
July70°3.4″7
August69°3.6″5
September62°3.8″5
October50°5.3″7
November40°4.3″7
December30°4.5″8

Regional context

In Westbrook, NOAA NCEI 1991-2020 normals put January near 24°F and July near 70°F — a 46°F seasonal arc — with about 48.1 inches of precipitation over 80 rainy or snowy days.

Rainfall in Westbrook stays even across the calendar: October tops out at 5.3 inches over 6.8 rainy days, and July still logs 3.4 inches across 6.7 — a narrow range for Westbrook. It is a balanced pattern Westbrook shares with places like Portland, ME, Little Falls, ME and South Windham, ME.

Around late-May, Westbrook sheds its freezing nights — kale, peas, spinach, and parsnips go into Westbrook's beds. Westbrook's heat-lovers — tomatoes, peppers, squash — hold off until Westbrook's frost risk clears, 10-14 days on. By early-October, frost is back in Westbrook — protect or harvest anything tender. A creek-bottom lot in Westbrook can lag Westbrook's last frost 7-10 days behind a south slope.

Similar climates: Portland, ME, Little Falls, ME, South Windham, ME, South Portland, ME, Falmouth Foreside, ME.

Frequently asked

When does it freeze in Westbrook?
Westbrook's last spring frost lands near mid-May, and in Westbrook the first fall frost follows around mid-October.
What is the rainy season in Westbrook?
Westbrook sees its heaviest rain in October (around 5.3 inches), part of roughly 48 inches a year.
What is the warmest month in Westbrook?
July is Westbrook's warmest month, averaging about 70°F.
What is the coldest month in Westbrook?
Westbrook bottoms out in January, with a mean near 24°F.
When can I start a vegetable garden in Westbrook?
Time tomatoes in Westbrook for two weeks after mid-May; peas and greens start at Westbrook's frost line.
How many rainy days does Westbrook get?
Westbrook averages about 80 days with measurable rain or snow each year.
What hardiness zone is Westbrook?
Westbrook's hardiness zone tracks its winter low; with January near 24°F, check the USDA ZIP map for the exact zone.
What is the 10-day forecast for Westbrook?
Westbrook'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 Westbrook?
See this week's day-by-day rain chances for Westbrook in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Westbrook?
Current conditions for Westbrook and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Westbrook forecast updated?
The Westbrook forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Westbrook?
Today's sunrise and sunset times for Westbrook 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 Westbrook?
The next few days in Westbrook's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Westbrook, Maine has a warm-summer humid continental climate: January averages roughly 24°F, July about 70°F, 46°F between them.

Across the year, Westbrook collects about 48 inches of precipitation over roughly 80 days with measurable rain or snow.

Latitude 43.7°N gives Westbrook its 46°F swing, and with it the rhythm of Westbrook's growing season.

All cities in Maine →

Portland, ME weather →

ZIP codes in Westbrook

  • 04092
  • 04098

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.