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Hot off the press, our summer 2024 weather forecast for Portland

Prepare for summer weather in Portland, Oregon, with these seasonal temperature and precipitation outlooks.

Looking down a pedestrian ramp toward a dock on a river with a bridge and city skyline in the distance.

Portland sees approx. 3% of its yearly rainfall in July and August.

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We know the question on your mind, Portlanders — when’s it going to get hot?

Thanks to the National Oceanic and Atmospheric Administration’s Climate Prediction Center, we know what temperatures and precipitation trends to expect in our city for June, July, and August. While exact weather conditions typically can’t be predicted more than a week in advance, here’s a seasonal outlook to help you prepare for what summer will bring.

Reminder: The first day of summer is Thursday, June 20.

A map of the United States with colors to show temperature expectations.

You’ll probably want to think about getting an air conditioner if you don’t already have one.

Graphic via NOAA Climate Prediction Center

Temperature

Think hot. This summer, Portland has a 40-50% chance of temperatures being higher than normal. El Niño (which brings warm air and drier skies) also started to show signs of emergence in May.

A graphic of the United States, with areas marked in tan or green to indicate precipitation expectations.

The Southeast could see more rain than usual, while parts of the Pacific Northwest and Southwest are looking dry.

Graphic via NOAA Climate Prediction Center

Precipitation

Expect slightly less moisture. Portland has a 33-40% chance of seeing below-normal rainfall totals this summer.

National forecasters expect El Niño (think: cold, wet winter conditions for southern states and warmer, drier weather for northern states) to switch and be replaced by its counterpart, La Niña, sometime between June and August. Both climate patterns tend to peak during the winter months.

June

Typically in Portland, June sees average highs of 72° and lows around 48° — but we’ll likely experience hotter days this month. On the summer solstice (aka the longest day of the year), there will be a 5:21 a.m. sunrise and a 9:03 p.m. sunset.

July

July’s average temperatures creep up to highs of 81° and lows of 53° This is also the driest month of the year with an average of 0.3 inches of rain — of course, that may be less this year, given the NOAA predictions. Pro tip: July is also the month with the highest UV index in Portland, so remember to protect your skin.

August

The averages stay pretty consistent, with highs typically around 82° and lows around 55° — but again, be prepared for more days rising above that 82° mark. In August, the average heat index is 84°, which means heat-related illness is likely if you spend too much time in the sun.

Seasonal essentials

  • Tired of losing your sunglasses in the water? These floating sunglasses provide optimal clarity and comfort for all your summer adventures.
  • Shield yourself from the sun while adding a touch of flair to your outfit with one of our hats.
  • This iceless cooler keeps your drinks cold for 7 hours.
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