With no rain in sight on the forecast models through July 22, it appears Portland's summer dry season kicked off back on June 30th, after seeing more than 1.25 inches of rain over a 10-day stretch.
Natives to the area have long said that summer truly begins on July 5, and the record book backs up the folklore. Historically, Portland's driest weather of the year runs from July 11th - August 18th.
The roughly 5-week period averages less than a 20 percent chance of rain each day and can go without a single drop of rain.
Here are the records for dry weather for PDX during the summer months:
- July: 0.00 inches - 1967 (several years have seen only a trace, including 2013)
- August: Trace - 2012 and several other years
- September: Trace - 1993
Average combined rainfall over the three months of July, August and September is 2.79 inches. The 3-month average is less than any single month from October through March!
Forecast outlooks continue to call for above-normal temperatures and below normal rainfall this summer. Of course, below-normal during the summer months means barely any rainfall at all through August.
(The above photo was taken on the Columbia river July 4th, looking east at Mt. Hood)
Meteorologist Rod Hill