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Western Washington forecast

Mostly cloudy Sunday morning with areas of rain developing in afternoon and evening. Warm Fall highs cool just a few degrees.

PUGET SOUND FORECAST:

Increasing clouds overnight and mostly cloudy Sunday morning. Low temperatures in the mid to upper 50s, near 60. Wind southwest 10-15 mph.

DISCUSSION:

The ridge of high pressure, acting to block our eastward movement of weather, has kept rain at the coast much of Saturday afternoon. Warm air has been surging in for highs in the mid to upper 60s.  The rain train starts moving again Sunday as the stalled front gets kicked inland for areas of rain over western Washington by afternoon.

Overnight, increasing clouds to mostly cloudy Sunday morning. Areas of rain will begin to develop inland through the day. Highs mid to upper 50s.  The associated trough of low pressure ejects most energy south of the PacNW and allows higher pressure to build over western Washington Monday and Tuesday.  Expect clearing skies, sunshine, and highs back into the mid 50s.

Wednesday a weak weather system progresses across Seattle for cloudy skies and rain showers.  Thursday a temporary high provides a dry morning before the next round of rain late Thursday night into Friday.  Anticipate rain at times Friday and Saturday along with brief warming each day into the low 60s.