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West Allis, Wisconsin Weather

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

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

West Allis, WI
Saturday, July 4 at 6:55 AM
71
°
Clear
Feels like
76°
Humidity
90%
Wind
5 mph
Sunrise
12:18 AM
Sunset
3:34 PM
West Allis, WI
Hour by hour · 24h
24-Hour ForecastWest Allis, WI: 24-hour forecast. Temperatures range from 62 to 80 degrees Fahrenheit.
L 62°H 80°
West Allis, WI
7-day forecast
  1. Today
    Jul 4
    Drizzle
    39%
    0.03″
    80°65°—
  2. Sunday
    Jul 5
    Overcast
    12%
    —
    79°62°-1°
  3. Monday
    Jul 6
    Overcast
    —
    —
    78°62°-1°
  4. Tuesday
    Jul 7
    Overcast
    —
    —
    82°60°+4°
  5. Wednesday
    Jul 8
    Light Drizzle
    28%
    —
    83°63°+1°
  6. Thursday
    Jul 9
    Light Showers
    33%
    —
    70°64°-13°
  7. Friday
    Jul 10
    Mostly Clear
    22%
    —
    77°63°+7°
West Allis, WI
Next 24 hours · Mild now
58°71°84°6a12p6p12anow 70°high 80°low 62°PRECIP %
West Allis, WI
Anemometer · 24h winds · from true
NESW
From · True
WSW
248° · veering 113°
Direction
WSW
248°
Sustained
5
mph
Gust
13
mph
Peak 24h
16
avg 6
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 6 · pk 16 @ 12:00a
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 155SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 113° from the wsw.
West Allis, WI
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
986.6
+0.1 mb in 3h · steady · 29.13 inHg
Now
986.6
mb
3h
+0.1
mb
12h
0.0
mb
24h
-1.5
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 986–989
9809859909951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW989.3985.6986.4
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
West Allis, WI
Air quality
39
AQI
Good
→-3 in 6h

AQI 39 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 5.0 µg/m³ (AQI 28) with a 0.93 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 2.5DRIVERGood
5.0μg/m³
PM 10Good
5μg/m³
NO₂Good
7μg/m³
OzoneGood
54μg/m³
UV IndexLow
0.1

What's driving it

PM × Wind × Precip

PM2.5 at 5.0 µg/m³ (AQI 28) with a 0.93 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.

PM2.5/PM10
0.93
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 TREND50100SATSUNMONTUEWEDTHUFRISAT7-DAY PM2.5 TREND · μg/m³350
West Allis, WI
Sky cover · visibility · 24h
Cloud cover
8%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
28.3mi
UNLIMITED
61 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
11:55 UTC · West Allis, WI · 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
11:55 UTC · West Allis, WI · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
West Allis, WI
Satellite · infrared · animated
West Allis, WI
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
West Allis, WI
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
4:44 AM
Sunrise
12:18 AM
Daylight
15h 16m
Sunset
3:34 PM
Civil dusk
9:10 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
West Allis, WI
The moon
Waning Gibbous
82% illuminated
Moonrise
10:51 PM
Moonset
9:54 AM
In sign
♓︎ Pisces
West Allis, WI
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

West Allis at a glance

  • Today vs. normal: 71°F — typical for the season
  • Last frost: May 4 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

16-Day Forecast — West Allis

  1. Sat80°65°39%
  2. Sun79°62°12%
  3. Mon78°62°3%
  4. Tue82°60°1%
  5. Wed83°63°28%
  6. Thu70°64°33%
  7. Fri77°63°22%
  8. Sat83°63°12%
  9. Sun67°60°11%
  10. Mon76°59°8%
  11. Tue76°62°13%
  12. Wed82°64°17%
  13. Thu86°67°33%
  14. Fri87°69°30%
  15. Sat85°69°32%
  16. Sun87°68°35%

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

Live wind & temperature near West Allis

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 — West Allis

SPC includes West Allis in the general thunderstorm area today — no severe risk, but storms are possible.

  • TODAYTSTMGeneral Thunderstorms
  • TOMORROWTSTMGeneral Thunderstorms
  • DAY 3NONENo severe risk

Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.

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——
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

West Allis's warmest month is August (~73°F mean) and its coldest is January (~23°F). Rainfall peaks in May (3.7 inches) and bottoms out in January (1.8 inches).

MonthMean tempPrecipRainy days
January23°1.8″18
February24°1.8″14
March32°2.6″16
April43°3.2″17
May52°3.7″18
June64°3.5″17
July73°2.6″15
August73°2.7″14
September67°3.1″14
October55°2.9″15
November40°3.1″15
December28°2.2″16

Regional context

Per NOAA NCEI 1991-2020 normals, West Allis runs from a 23°F January mean to 73°F in July, a 50°F seasonal spread, with near 33.1 inches of precipitation across about 189 wet days.

No season owns West Allis's rain: May reaches 3.7 inches across 18.0 days and January keeps 1.8 inches on 17.8, an even spread through West Allis's year. That even rhythm groups West Allis with places like West Milwaukee, WI, Greenfield, WI and Wauwatosa, WI.

West Allis reaches its last hard frost near late-May; that is the cue for kale, peas, spinach, and parsnips. West Allis's heat-lovers — tomatoes, peppers, squash — hold off until West Allis's frost risk clears, 10-14 days on. Frost returns to West Allis near early-October, ending the tender-crop season. West Allis's low ground holds frost later into spring than West Allis's benches, which run 3-5 days ahead.

Similar climates: West Milwaukee, WI, Greenfield, WI, Wauwatosa, WI, Elm Grove, WI, Hales Corners, WI.

Frequently asked

When does it freeze in West Allis?
In West Allis, expect the last spring frost near mid-May; West Allis's first autumn frost comes around mid-October.
What is the rainy season in West Allis?
West Allis sees its heaviest rain in May (around 3.7 inches), part of roughly 33 inches a year.
What is the warmest month in West Allis?
August is West Allis's warmest month, averaging about 73°F.
What is the coldest month in West Allis?
West Allis bottoms out in January, with a mean near 23°F.
When can I start a vegetable garden in West Allis?
West Allis's last frost (mid-May) cues hardy greens; in West Allis, hold heat-lovers two weeks past.
How many rainy days does West Allis get?
West Allis averages about 189 days with measurable rain or snow each year.
What hardiness zone is West Allis?
West Allis's USDA zone comes from its January mean (23°F); enter the ZIP on the USDA lookup for the number.
What is the 10-day forecast for West Allis?
West Allis'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 West Allis?
See this week's day-by-day rain chances for West Allis in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in West Allis?
Current conditions for West Allis and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the West Allis forecast updated?
The West Allis forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in West Allis?
Today's sunrise and sunset times for West Allis 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 West Allis?
The next few days in West Allis's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

West Allis, Wisconsin occupies a warm-summer humid continental zone, with January means near 23°F and July around 73°F — a 50°F swing.

West Allis sees close to 33 inches of precipitation annually, falling across some 189 wet days.

The 50°F gap between West Allis's summer and winter, at 43.0°N, shapes West Allis's frost calendar.

All cities in Wisconsin →

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ZIP codes in West Allis

  • 53219
  • 53214
  • 53227

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.