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

Portland, Oregon Weather

Fireweed Ignites. Day 15 of summer. Read this microseason across nine climate regions →

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

Portland, OR
Sunday, July 5 at 2:00 AM
58
°
Mostly Clear
Feels like
54°
Humidity
71%
Wind
9 mph
Sunrise
10:28 PM
Sunset
2:02 PM
Portland, OR
Hour by hour · 24h
24-Hour ForecastPortland, OR: 24-hour forecast. Temperatures range from 54 to 81 degrees Fahrenheit.
L 54°H 81°
Portland, OR
7-day forecast
  1. Today
    Jul 5
    Overcast
    —
    —
    81°54°—
  2. Monday
    Jul 6
    Partly Cloudy
    —
    —
    88°58°+7°
  3. Tuesday
    Jul 7
    Overcast
    —
    —
    86°56°-2°
  4. Wednesday
    Jul 8
    Overcast
    —
    —
    76°61°-10°
  5. Thursday
    Jul 9
    Overcast
    —
    —
    81°54°+5°
  6. Friday
    Jul 10
    Clear
    —
    —
    86°56°+5°
  7. Saturday
    Jul 11
    Overcast
    —
    —
    88°58°+2°
Portland, OR
Next 24 hours · Cool now
HOT 90°45°68°90°12a6a12p6pnow 58°high 81°low 54°
Portland, OR
Anemometer · 24h winds · from true
NESW
From · True
N
349° · steady
Direction
N
349°
Sustained
9
mph
Gust
23
mph
Peak 24h
25
avg 6
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 6 · pk 25 @ 11:00p
0102030MPHB1B2B3B4B5B6-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 234SUSTGUST
−24h−18h−12h−6hnow
Light breeze holding from the n.
Portland, OR
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1012.4
-0.2 mb in 3h · steady · 29.90 inHg
Now
1012.4
mb
3h
-0.2
mb
12h
-1.6
mb
24h
+0.1
mb
Regime · CHANGE
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1011–1015
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1014.91011.21012.4
−24h−18h−12h−6hnow
Air sits at the threshold — small shifts decide the day.
Portland, OR
Air quality
25
AQI
Good
↓-9 in 6h

AQI 25 (Good), driven by PM2.5. AQI down 9 over the last 6 hours (gradual decline).

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

PM 2.5DRIVERGood
4.0μg/m³
PM 10Good
5μg/m³
NO₂Good
6μg/m³
OzoneGood
37μg/m³
UV IndexLow
0.0

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/m³300
Portland, OR
Sky cover · visibility · 24h
Cloud cover
49%
MOSTLY CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
45.7mi
UNLIMITED
109 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
09:00 UTC · Portland, OR · 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
09:00 UTC · Portland, OR · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Portland, OR
Satellite · infrared · animated
Portland, OR
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Portland, OR
Almanac · Sunday, July 5
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
4:51 AM
Sunrise
10:28 PM
Daylight
15h 34m
Sunset
2:02 PM
Civil dusk
9:40 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Portland, OR
The moon
Waning Gibbous
74% illuminated
Moonrise
11:35 PM
Moonset
11:27 AM
In sign
♓︎ Pisces
Portland, OR
Microseason
Jul 1–5

Fireweed Ignites

weather
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Portland at a glance

  • Today vs. normal: 8°F below the seasonal normal for this latitude
  • Last frost: May 19 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP codes: 97201, 97202, 97203, 97204, 97205, 97206, 97208, 97209 +26 more

15-Day Forecast — Portland

  1. Sun81°54°0%
  2. Mon88°58°0%
  3. Tue86°56°0%
  4. Wed76°61°1%
  5. Thu81°54°0%
  6. Fri86°56°0%
  7. Sat88°58°4%
  8. Sun84°57°1%
  9. Mon89°57°3%
  10. Tue91°59°1%
  11. Wed94°60°0%
  12. Thu98°64°6%
  13. Fri98°66°3%
  14. Sat85°60°3%
  15. Sun94°55°3%

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

Live wind & temperature near Portland

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's Deep Silence.January 6–10: The First Pressure Shift.January 11–15: The Lengthening.January 16–20: The Crows Begin.January 21–25: Skunk Cabbage Wakens.January 26–31: The Fog Deepens.February 1–5: The Sap Stirs.February 6–10: East Wind Weakens the Marine Layer.February 11–15: Thrush Song at First Light.February 16–20: The Salmon Remember.February 21–25: The Soil Awakens.February 26–28: Mist Begins to Linger.March 1–5: The Buds Emerge.March 6–10: The Small Lives Stir.March 11–15: The Spring Salmon Peak.March 16–20: Alder Catkins Dust the Air.March 21–25: Equinox Fog Clears.March 26–31: Salmonberry First Bloom.April 1–5: Thunder Rolls Down the Valleys.April 6–10: Swallows Arrive at the Bridges.April 11–15: Geese Turn Their Faces North.April 16–20: Rainbows Arc Above the Cascades.April 21–25: Reeds Rise from the Wetlands.April 26–30: Frost Releases the Garden.May 1–5: Warblers Flood the Canopy.May 6–10: Frogs Sing at Twilight.May 11–15: Earthworms Rise to Feed the Forest.May 16–20: Shoots and Sprouts Rise in Ranks.May 21–25: Silkworm Days—Full Canopy.May 26–31: Safflower Days—Late May Blooms.June 1–5: Rufous Hummingbirds Arrive.June 6–10: Oceanspray Towers.June 11–15: Solstice Light Crests.June 16–20: Thimbleberry Sweetens.June 21–25: Summer Solstice Stillness.June 26–30: Dry Pattern Deepens.July 1–5: Fireweed Ignites.July 6–10: Peak Hummingbird Wars.July 11–15: Red Huckleberry Ripens.July 16–20: Smoke Season Beckons.July 21–25: Dog Days Hold.July 26–31: Smoke Deepens.August 1–5: August Arrives Dimmed.August 6–10: Cool Wind Hints Return.August 11–15: Cicadas Crescendo.August 16–20: Marine layer deepens.August 21–25: First sweater morning.August 26–31: August snap arrives.September 1–5: Rivers quicken with silver.September 6–10: Dew settles thick.September 11–15: Raptors funnel through passes.September 16–20: Equinox—darkness gains.September 21–25: Fog locks the valleys.September 26–30: Geese stage southward.October 1–5: Mushroom flush deepens.October 6–10: Maples ignite orange.October 11–15: Frost's first mark.October 16–20: Oaks turn russet.October 21–25: First killing frost.October 26–31: Atmospheric rivers arrive.November 1–5: Maple and ivy turn to amber.November 6–10: Last leaves cling in quiet rain.November 11–15: First frost finds the lowlands.November 16–20: Bare branches open the winter sky.November 21–25: Heavy rains mask the stars.November 26–30: North wind clears the gloom.December 1–5: Darkness settles early.December 6–10: Winter cold locks the sky.December 11–15: The days reach their minimum.December 16–20: Ice forms at the margins.December 21–25: The sun turns at solstice.December 26–31: Year's end 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

Fireweed Ignites

Magenta fireweed spires surge from burned and cleared slopes, their blooms climbing from base upward. July's signature color claims the disturbed ground.

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

In Portland, August runs warmest near 69°F and January coldest around 39°F, while December is the wettest month (7.2 inches) and July the driest (0.3 inches).

MonthMean tempPrecipRainy days
January39°7.2″23
February41°5.5″19
March44°5.9″22
April50°3.9″19
May56°2.7″17
June62°1.7″13
July68°0.3″4
August69°0.5″5
September63°1.9″10
October53°5.7″17
November45°7.1″21
December39°7.2″22

Regional context

In Portland, NOAA NCEI 1991-2020 normals put January near 39°F and July near 68°F — a 29°F seasonal arc — with about 49.7 inches of precipitation over 192 rainy or snowy days.

Cool-season fronts carry Portland's rain: December logs 7.2 inches on 21.9 days, against July's 0.3 inches on 4.2 — winter does the heavy lifting in Portland. That groups Portland with places like Maywood Park, OR, West Haven-Sylvan, OR and Raleigh Hills, OR on the same cool-season storm track.

Around late-May, Portland sheds its freezing nights — peas, lettuce, spinach, and radishes go into Portland's beds. Portland's heat-lovers — tomatoes, peppers, squash — hold off until Portland's frost risk clears, 10-14 days on. The season ends by early-October in Portland, once hard frosts set back in. Portland's low ground holds frost later into spring than Portland's benches, which run 3-5 days ahead.

Similar climates: Maywood Park, OR, West Haven-Sylvan, OR, Raleigh Hills, OR, Milwaukie, OR, West Slope, OR.

Naturalist notes

Late May brings the first blooms of Oregon grape, their bright yellow flower clusters emerging after the final spring frosts.

American robins begin their second nesting cycle in June, taking advantage of Portland's lengthening daylight hours.

Frequently asked

When does it freeze in Portland?
Portland's last spring frost lands near mid-May, and in Portland the first fall frost follows around mid-October.
What is the rainy season in Portland?
Rainfall in Portland peaks in December near 7.2 inches, out of about 50 inches annually.
What is the warmest month in Portland?
On average August tops the year in Portland at about 69°F.
What is the coldest month in Portland?
The coldest stretch in Portland falls in January, around 39°F on average.
When can I start a vegetable garden in Portland?
Around mid-May, start frost-hardy crops in Portland; tomatoes and basil belong a fortnight later.
How many rainy days does Portland get?
Portland averages about 192 days with measurable rain or snow each year.
What hardiness zone is Portland?
Since January in Portland averages 39°F, Portland's USDA zone follows that floor — confirm it by ZIP.
What is the 10-day forecast for Portland?
Portland'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 Portland?
See this week's day-by-day rain chances for Portland in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Portland?
Current conditions for Portland and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Portland forecast updated?
The Portland forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Portland?
Today's sunrise and sunset times for Portland 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 Portland?
The next few days in Portland's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

The warm-summer Mediterranean climate of Portland, Oregon carries typical Januarys near 39°F and Julys around 68°F — 29°F of seasonal travel.

Yearly precipitation in Portland totals around 50 inches, spread over about 192 days of rain or snow.

From 45.5°N, Portland sees a 29°F seasonal swing that governs Portland's planting and frost windows.

All cities in Oregon →

ZIP codes in Portland

  • 97227
  • 97221
  • 97220
  • 97229
  • 97203
  • 97202
  • 97201
  • 97206
  • 97205
  • 97204
  • 97209
  • 97208
  • 97258
  • 97266
  • 97219
  • 97213
  • 97236
  • 97232
  • 97233
  • 97230
  • 97239
  • 97218
  • 97214
  • 97215
  • 97216
  • 97217
  • 97210
  • 97211
  • 97212
  • 97207
  • 97228
  • 97238
  • 97240
  • 97242
  • 97250
  • 97251
  • 97252
  • 97253
  • 97254
  • 97256
  • 97280
  • 97282
  • 97283
  • 97286
  • 97290
  • 97291
  • 97292
  • 97293
  • 97294

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.