Triple digit heat is common in the desert Southwest and even parts of the South, but it's not every day, or even every year, that Portland, Oregon reaches 100°. But the Rose City hit the century mark on Sunday for the first time this summer.
Portland officially hit 100° at 4:57pm Pacific Time on Sunday afternoon, according to the National Weather Service (NWS) office, making it the first 100° reading so far in 2018 there. For Portland, it was their first time at or above 100° since August 3rd, 2017.
![](https://media.weathernationtv.com/app/uploads/2018/07/pdx100.png)
In 2010, 2011, 2013 and 2014 it didn't reach 100° or above in Portland. Portland averages only 12 days a year with a high of 90° or above, and since 1940, there have been over 30 years without an 100° or above reading.
But there's good news for cool weather fans: A much more pleasant and less hot air mass is already moving in. An onshore flow will keep Portland and the Willamette Valley mainly in the low-to-mid 80s for the rest of the week, which is much closer to average for this time of year.
![](https://media.weathernationtv.com/app/uploads/2018/07/por7.png)
Stay with WeatherNation for the latest on the heat across the Northwest.
For WeatherNation: Meteorologist Chris Bianchi