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

West Pasco, Washington Weather

Thunderheads build by noon. Day 90 of spring. Read this microseason across nine climate regions →

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

West Pasco, WA
Tuesday, June 16 at 8:52 PM
78
°
Clear
Feels like
70°
Humidity
27%
Wind
14 mph
Sunrise
10:04 PM
Sunset
1:50 PM
West Pasco, WA
Hour by hour · 24h
24-Hour ForecastWest Pasco, WA: 24-hour forecast. Temperatures range from 62 to 90 degrees Fahrenheit.
L 62°H 90°
West Pasco, WA
7-day forecast
  1. Today
    Jun 16
    Partly Cloudy
    —
    —
    96°64°—
  2. Wednesday
    Jun 17
    Clear
    —
    —
    90°62°-6°
  3. Thursday
    Jun 18
    Overcast
    —
    —
    92°62°+2°
  4. Friday
    Jun 19
    Overcast
    —
    —
    100°70°+8°
  5. Saturday
    Jun 20
    Overcast
    —
    —
    94°65°-6°
  6. Sunday
    Jun 21
    Mostly Clear
    —
    —
    96°62°+2°
  7. Monday
    Jun 22
    Overcast
    —
    —
    102°67°+6°
West Pasco, WA
Next 24 hours · Warm now
HOT 90°55°78°100°6p12a6a12pnow 81°high 90°low 62°
West Pasco, WA
Anemometer · 24h winds · from true
NESW
From · True
NW
323° · veering 154°
Direction
NW
323°
Sustained
14
mph
Gust
32
mph
Peak 24h
33
avg 10
Beaufort · 4 · MOD 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 10 · pk 33 @ 7:00p
0102030MPHB1B2B3B4B5B6B7-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 3211SUSTGUST
−24h−18h−12h−6hnow
Sustained 14 mph with gusts pulsing to 32 — flags snap, branches bend.
West Pasco, WA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
996.2
+0.8 mb in 3h · rising · 29.42 inHg
Now
996.2
mb
3h
+0.8
mb
12h
-2.3
mb
24h
-2.5
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 995–998
9909951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW998.2994.9995.7
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
West Pasco, WA
Air quality
63
AQI
Moderate
→-4 in 6h

AQI 63 (Moderate), driven by Ozone. AQI flat over the last 6 hours (within ±4 points). Ozone at AQI 49 now. With UV 0.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 12 around 1 PM.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5Good
4.8μg/m³
PM 10Good
6μg/m³
NO₂Good
2μg/m³
OzoneDRIVERUnhealthy SG
103μg/m³
UV IndexLow
0.1

What's driving it

Ozone × UV × Sky

Ozone at AQI 49 now. With UV 0.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 12 around 1 PM.

Present
AQI 49
UV peak
0.1 at 1 PM
Sky at peak
clear
Projected peak
AQI 12

PM × Wind × Precip

PM2.5 at 4.8 µg/m³, PM10 at 5.7 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.84
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 TREND50100WEDTHUFRISATSUNMONTUEWED7-DAY PM2.5 TREND · μg/m³580
West Pasco, WA
Sky cover · visibility · 24h
Cloud cover
0%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
135.8mi
UNLIMITED
185 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
03:52 UTC · West Pasco, WA · 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
03:52 UTC · West Pasco, WA · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
West Pasco, WA
Satellite · infrared · animated
West Pasco, WA
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
West Pasco, WA
Almanac · Tuesday, June 16
A summer fog for fair, a winter fog for rain.
Civil dawn
4:26 AM
Sunrise
10:04 PM
Daylight
15h 46m
Sunset
1:50 PM
Civil dusk
9:30 PM
Planting note
Stake and prune tomato suckers. Watch for squash vine borers.
West Pasco, WA
The moon
Waxing Crescent
6% illuminated
Moonrise
7:40 AM
Moonset
11:03 PM
In sign
♋︎ Cancer
West Pasco, WA
Microseason
Jun 16–20

Thunderheads build by noon

plant
Jan 146% of the yearDec 31

Read this microseason across nine climate regions →

West Pasco at a glance

  • Today vs. normal: 9°F above the seasonal normal for this latitude
  • Last frost: May 23 (climatological average for this latitude)
  • Microseason: Jun 16–20
  • Planting window: Stake and prune tomato suckers. Watch for squash vine borers.

16-Day Forecast — West Pasco

  1. Tue96°64°1%
  2. Wed90°62°0%
  3. Thu92°62°0%
  4. Fri100°70°0%
  5. Sat94°65°0%
  6. Sun96°62°0%
  7. Mon102°67°0%
  8. Tue107°72°1%
  9. Wed88°61°1%
  10. Thu79°53°1%
  11. Fri83°49°1%
  12. Sat92°57°3%
  13. Sun96°64°6%
  14. Mon101°67°6%
  15. Tue107°70°5%
  16. Wed112°75°6%

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

Right now in the garden

Warm-season window is open

As of June 17, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.

January 1–5: Deep freeze grips the high peaks.January 6–10: Ice thickens on alpine tarns.January 11–15: Springs stir beneath locked earth.January 16–20: Grouse call from the transition zone.January 21–25: First signals of the soil's turning.January 26–31: Stream water crystallizes thick.February 1–5: The year's coldest fortnight begins.February 6–10: East wind carries a subtle promise.February 11–15: Snowmelt springs whisper beneath ice.February 16–20: Red-wing calls rise from the wetlands.February 21–25: Rain begins to trace the snowline upward.February 26–28: Mist gathers in the warming canyons.March 1–5: Grass and trees stir from their sleep.March 6–10: Hibernators break through frozen ground.March 11–15: First blooms open to the spring sun.March 16–20: Mountain bluebirds return to the summits.March 21–25: Spring equinox at the divide.March 26–31: Aspen catkins burst in clusters.April 1–5: Thunderstorms rumble over granite peaks.April 6–10: Swallows and swifts slice the warming sky.April 11–15: Sandhill cranes call through the wetlands.April 16–20: Rainbows arch over the snowfields.April 21–25: New growth explodes across the montane.April 26–30: Last frost yields to summer growth.May 1–5: Wildflowers crest the high meadows.May 6–10: Summer monsoon clouds gather southward.May 11–15: Snowmelt crests toward the divide.May 16–20: High country wildflowers peak.May 21–25: Summer heat accelerates the growing season.May 26–31: Summer settles into the high country.June 1–5: Pikas hayfeeding in granite peaks.June 6–10: Glacier lily carpets the snowmelt.June 11–15: Paintbrush crowns the ridges.June 16–20: Thunderheads build by noon.June 21–25: Long light holds the peaks.June 26–30: Monsoon moisture drifts north.July 1–5: Monsoon storms drench the south.July 6–10: Wind builds through canyons.July 11–15: Lightning crowns every peak.July 16–20: Elk herds claim alpine meadows.July 21–25: Pika caches reach their peak.July 26–31: Monsoon pulses weaken northward.August 1–5: Summer heat breaks with monsoon.August 6–10: First frost creeps to peaks.August 11–15: Cool wind returns from north.August 16–20: Monsoon clouds gather over the peaks.August 21–25: The monsoon breaks into scattered showers.August 26–31: Summer insects thin as autumn wind rises.September 1–5: Elk descend from summer high meadows.September 6–10: Dew crystallizes on high grass at dawn.September 11–15: Hawks begin the long crossing southward.September 16–20: Equinox: darkness claims the high passes.September 21–25: Thunder retreats as the monsoon dies.September 26–30: First frost hardens the high valleys.October 1–5: October: the aspen stands reach their peak.October 6–10: Aspen gold slides downslope with the chill.October 11–15: Snow settles on the high passes.October 16–20: Elk bugling fades as rut nears its end.October 21–25: First hard frost grips the basin.October 26–31: Late rains settle into November patterns.November 1–5: Aspen canopy falls to earth.November 6–10: Granite bones emerge from cover.November 11–15: Earth begins to harden.November 16–20: Bare ranges hold silence.November 21–25: Snow returns to the peaks.November 26–30: North wind strips the landscape.December 1–5: Deep darkness settles over the ranges.December 6–10: Winter locks the high country.December 11–15: Elk withdraw to winter range.December 16–20: Ice thickens across frozen water.December 21–25: Winter solstice — the sun returns.December 26–31: The year closes 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 · June 16–20

Thunderheads build by noon

Afternoon monsoon patterns establish; thunderstorms reliably build over peaks, bringing lightning and cool downdrafts.

Day 168 of 365 · Wedge 34 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 Pasco peaks at about 77°F in July and bottoms near 36°F in January; January brings the heaviest rain (1.1 inches) and August the least (0.2 inches).

MonthMean tempPrecipRainy days
January36°1.1″4
February40°0.8″3
March47°0.7″2
April54°0.6″2
May63°0.8″2
June69°0.6″2
July77°0.2″1
August76°0.2″1
September67°0.3″1
October55°0.7″2
November43°0.9″3
December36°1.1″4

Frequently asked

When does it freeze in West Pasco?
In West Pasco, expect the last spring frost near mid-May; West Pasco's first autumn frost comes around mid-October.
What is the rainy season in West Pasco?
Rainfall in West Pasco peaks in January near 1.1 inches, out of about 8 inches annually.
What is the warmest month in West Pasco?
On average July tops the year in West Pasco at about 77°F.
What is the coldest month in West Pasco?
The coldest stretch in West Pasco falls in January, around 36°F on average.
When can I start a vegetable garden in West Pasco?
Around mid-May, start frost-hardy crops in West Pasco; tomatoes and basil belong a fortnight later.
How many rainy days does West Pasco get?
West Pasco records around 27 days of measurable precipitation annually.
What hardiness zone is West Pasco?
Because West Pasco bottoms near 36°F in January, that winter low sets West Pasco's USDA zone — verify by ZIP.
What is the 10-day forecast for West Pasco?
West Pasco'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 Pasco?
See this week's day-by-day rain chances for West Pasco in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in West Pasco?
Current conditions for West Pasco 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 Pasco forecast updated?
The West Pasco 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 Pasco?
Day length in West Pasco peaks around the June solstice — earliest sunrise and latest sunset — and is shortest near the December solstice.
How accurate is the weather forecast for West Pasco?
The next few days in West Pasco's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

The warm-summer Mediterranean climate of West Pasco, Washington carries typical Januarys near 36°F and Julys around 77°F — 41°F of seasonal travel.

Yearly precipitation in West Pasco totals around 8 inches, spread over about 27 days of rain or snow.

From 46.2°N, West Pasco sees a 41°F seasonal swing that governs West Pasco's planting and frost windows.

All cities in Washington →

Pasco, WA weather →

ZIP codes in West Pasco

  • 99301

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.