Steaming pumpkin spice lattes may need to wait as summer doesn’t seem to be done with Portland yet. Broad high pressure remains over the Pacific Northwest and warm, dry days continue early in the week.
It’s not unusual to see some warm days late in September, but Sunday’s 88-degree high was well above average for the date, although nowhere near a record. Average highs in late September are in the mid 70s. The record high temperature for Sept. 25 is 94 degrees, set in 1991.
Monday will continue the trend of summer-like warmth with a sunny day and a high of about 85 degrees.
The National Weather Service says a southwesterly marine push overnight should lead to some morning clouds early Tuesday before skies clear to mostly sunny by the afternoon. The high will reach about 81 degrees. Some areas of the central and southern Willamette Valley may have clouds linger longer and temperatures stay in the upper 70s. Winds may be breezy at times.
A fast-moving cold front will bring chances of showers by Wednesday. The coast and Coast Range will see some showers early in the day. Portland’s chances of rain are at about 50% and will likely fall before noon. Skies will remain cloudy, and showers may kick up again in the afternoon. The high will drop to about 71 degrees.
Extended forecasts show decreasing showers Thursday and cloudy, but dry skies Friday. Highs will stay in the 70s.
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