NWS WEATHER
Atlanta72°FFog/MistBaltimore55°FCloudyCharlotte61°FFog/MistChicago61°FHeavy RainDallas72°FClearDenver50°FClearDetroit57°FCloudyHouston70°FClearLos Angeles61°FCloudyMiami82°FMostly SunnyMinneapolis53°FFog/MistNew York52°FLight RainOrlando81°FClearPhiladelphia55°FRainPhoenix77°FClearPortland50°FClearRiverside61°FCloudySacramento54°FClearSan Antonio70°FMostly CloudySan Francisco55°FMostly CloudySeattle54°FCloudySt. Louis66°FCloudyTampa78°FClearWashington57°FLight RainAtlanta72°FFog/MistBaltimore55°FCloudyCharlotte61°FFog/MistChicago61°FHeavy RainDallas72°FClearDenver50°FClearDetroit57°FCloudyHouston70°FClearLos Angeles61°FCloudyMiami82°FMostly SunnyMinneapolis53°FFog/MistNew York52°FLight RainOrlando81°FClearPhiladelphia55°FRainPhoenix77°FClearPortland50°FClearRiverside61°FCloudySacramento54°FClearSan Antonio70°FMostly CloudySan Francisco55°FMostly CloudySeattle54°FCloudySt. Louis66°FCloudyTampa78°FClearWashington57°FLight Rain
Portland, OR skyline — local weather forecast and conditions
Portland, OR Photo: Brandon DesJarlais
Weather Portland, OR

Portland Weather Sunday: Mostly Sunny and Near 80°F Before Memorial Day Rain

Best Window Sunday: 80°F, Mostly Sunny
Rain Risk Possible
What To Wear / Bring Rain layer, water-resistant shoes, and a backup indoor plan
Useful Links Local forecast, radar, and relevant planning links
Disclosure: This article may contain affiliate links. We may earn a small commission at no extra cost to you. As an Amazon Associate, Weather Window earns from qualifying purchases.

7-Day Forecast

Sun 80°Mostly Sunny
Mem 67°Rain Showers
Tue 66°Rain Showers...
Wed 72°Partly Sunny
Thu 78°Mostly Sunny
Fri 68°Partly Sunny
Sat 67°Mostly Sunny

Portland is handing you one of the finest Sundays of late May — mostly sunny skies, a high near 80°F, and barely a breath of wind. Today is a gift before Memorial Day turns decidedly soggy, so get outside and use it.

Today’s Setup

High pressure has the Willamette Valley locked in with warm, calm conditions. Temperatures climb to near 80°F by early afternoon with a gentle northwest breeze around 3 mph. Forest Park trails, Laurelhurst Park, Tom McCall Waterfront Park — wherever you want to be, today delivers. One caveat: the coast may hold onto marine clouds and patchy drizzle through midmorning near Cannon Beach and Astoria, but inland Portland looks clear all day. If clouds push farther east than expected, some spots could end up 5–10°F cooler than forecast, per the National Weather Service.

Best Window To Be Outside

The entire day is yours. Mow the lawn, fire up the backyard grill, get a long ride in along the Springwater Corridor — do it all now before Monday’s rain arrives. An insulated water jug 1 gallon is worth having for longer outdoor sessions when it warms up like this.

Memorial Day Rain Risk

Monday flips the script hard. The National Weather Service puts rain chances at 90% on Memorial Day, with showers developing after 10 AM PT, south-southwest winds of 7–15 mph with gusts near 26 mph, and a high of only 67°F. A Gulf of Alaska system drives a frontal band inland — forecasters expect 0.10 to 0.25 inches of rain in the Portland metro, with heavier totals in the Coast Range. Move your cookout under cover or lean on a portable propane grill beneath the patio awning to salvage the holiday. Pack rain boot shoe covers if you’re heading out Monday.

Allergy Alert

Warm, dry Sunday means pollen is flying — grass season is in full swing across the Willamette Valley. Keep allergy relief nasal spray handy before long outdoor stints, and run a HEPA air purifier at home to give your sinuses a break after a full day outside.

Events This Week

Tonight is busy on the indoor circuit: Purity Ring plays Revolution Hall, Stifel Stars on Ice - U.S. brings Olympic skating to Veterans Memorial Coliseum, and Inner Wave plays the Wonder Ballroom — all smart choices given Tuesday’s rain threat is already fading.

Later in the week, The Black Keys hit McMenamins Historic Edgefield Manor on Wednesday, May 27 — that’s an outdoor amphitheater-style setting, and the forecast should be improving by then. Get tickets on SeatGeek while you can. Dethklok plays the Roseland Theater on Tuesday, May 26 — Find tickets on StubHub if metal is your thing.

Looking ahead to May 30, the Portland Fire host the Indiana Fever at Moda Center — indoors and weather-proof. Grab Official team gear on Fanatics to represent Rose City.

Dinner Tonight

An 80°F evening is perfect for something light and quick — pasta primavera tossed with fresh spring vegetables won’t heat up the kitchen and comes together in 20 minutes. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.

Next Few Days

Monday (Memorial Day): Rainy and breezy, high near 67°F, 90% rain chance after 10 AM PT. Monday night: Rain continues, low near 48°F, 75% chance. Tuesday: Lingering showers with a low-end thunder chance per the National Weather Service. Late week: A gradual clearing and warming trend — the rain is just a brief holiday interruption.

Keep an eye on the Portland weather forecast for daily updates, and check outdoor gear deals as you plan the week ahead.

Upcoming Home Games

Plan around the forecast — grab tickets, gear up, and see kickoff conditions.

Portland Fire vs Indiana Fever
Sat, May 30 · Moda Center

Live Radar — Portland Area

Full interactive radar →
Live weather radar for Portland, OR

Radar data from the National Weather Service