The National Weather Service in Portland forecasts a damp and fluctuating week, as showers are expected to commence principally post-4 pm today with the temperature hovering near 63 degrees, as calm winds shift to a southern direction at around 6 mph in the morning; the probability of precipitation stands firmly at 80 percent with new rainfall amounts projected to be less than a tenth of an inch. The National Weather Service reports that tonight's wet conditions will mainly wane before 9 pm, followed by the occurrence of patchy fog after 3 am, while the low temperatures are expected to remain near 58 degrees and the south wind around 5 mph becoming calm as evening falls, maintaining an 80 percent chance of precipitation.
Continuing into Wednesday, any lingering fog is anticipated to dissipate before 8 am presenting a partly sunny sky with a high near 71 degrees, light, and variable wind is expected whereas Wednesday night should transition into partly cloudy conditions, with a low circling 56 degrees the north northwest wind will shift at about 6 mph before calming down during the evening. The forecast provided by the NWS for Thursday indicates partly sunny weather with a high nearing 72 and light northwest wind transitioning into a partly cloudy Thursday night with a low of around 53.
Looking toward the end of the week, Friday's forecast suggests another partially sunlit sky with a high close to 69 degrees, later descending into a partly cloudy night, with temperatures expected to drop to around 51 degrees. The NWS predicts a slight change comes Saturday, with a minor chance of showers post-11 am, despite the largely sunny conditions and a similar high near 68 degrees, the evening might bring more potential for showers as it becomes mostly cloudy with the thermometer dropping to about 55.
The intermittent showers seem poised to persist into Sunday, under partly sunny skies with the mercury ascending once more to the low 70s, the possibility of night showers carries on mingling with the cloudiness and accompanying a low around 57 degrees, as we advance into Monday the rhythm continues with a slight chance of showers yet again and a high approximately reaching 72— framing a portrait of an oscillating pattern of precipitation and glimpses of sun fighting through the Pacific Northwest's trademark grayness in this midpoint of September, according to the detailed forecast.
