Portland International Speedway Weather - Portland, OR INDYCAR Race Weather

Friday, September 1

Mostly Cloudy, Slight chc for Showers

Low 58°F

High 78°F

N 6-12 mph

Saturday, September 2

Mostly Sunny, Chc for PM Showers

Low 59°F

High 82°F

S 6-12 mph

Sunday, September 3

Increasing Clouds, Chc of Showers & T-Storm late

Low 60°F

High 72°F

SW 6-12 mph

Portland, US
12:22 pm, May 23
58°F
L: 55° H: 61°
Feels like 56.35 °F overcast clouds
Wind gusts: 2 m/s
UV Index: 0
Precipitation: 0 inch
Visibility: 10 km
Sunrise: 5:31 am
Sunset: 8:43 pm
Humidity 65 %
Pressure1021 mb
Wind 2 m/s

Forecast Discussion & Updates

IndyCar – Grand Prix of Portland – Portland International Raceway

Fri Sep 1 – Mostly cloudy. Slight chance for rain showers.  Low around 58°F. High around 78°F. North winds around 6-12 mph.

Sat Sep 2 – Mostly sunny. Slight chance for late showers, but mainly to the south. Low around 59°F. High around 82°F. South winds around 6-12 mph.

Sun Sep 3 – Increasing clouds, chance of showers and thunderstorms late. Low around 60°F. High around 72°F. Southwest winds around 6-12 mph.

Updated #PortlandGP forecast: still expect system to move into PacNW Thursday…that’ll keep slight chance showers in the Fri/Sat forecast. Update is that it looks like another system approaches late Sun/early Mon…we’ll need to keep an eye on that timing & poss. impacts #INDYCAR

Updated: 08/30/23 9:39 AM EDT

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Meteorologists

IMSA Mark Sweeney (@IMSA_Wxman)

IndyCar @IndyCar_Wxman

NHRA Elizabeth Ohlemacher (@NHRA_weather)

NASCAR & Formula One Aaron Studwell, Ph.D. (@RaceWeather) & Elizabeth Ohlemacher (@NHRA_weather)

More than half a century ago, the Portland International Raceway site was something quite different than a park: a city.
 
Built during World War II as housing for Kaiser shipyard workers, the city of Vanport was home to nearly 40,000 people at its peak, making it the second largest city in Oregon. But, built behind dikes, Vanport was washed away by a flood in 1948, never to be rebuilt.
 
The site, 640 acres of low-lying farmland, was Americas largest public housing project, and was built in less than 10 months. There was a library, post office, police station, several fire houses, an infirmary, stores, five elementary schools and a 750-seat movie theater. Vanport College, created after the war to support veterans headed to school on the G.I. Bill, moved after the flood to become Portland State University.
 
Left from the remains of Vanport was an intact street system, and little else, when acquired by the City of Portland in 1960. It was a time of growing interest in sports car and drag racing, and the Portland Jaycees saw that the abandoned roads of Vanport had the potential to become a road race course. In 1961 the first Rose Cup race was held as part of the Portland Rose Festival.
 
By 1965 the track was hosting regular drag races as well as motorcycle and kart races.
 

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