Forecast for Seattle, WA - now I'm really mad! Today Mostly sunny and warmer. Highs in the mid 70s near Puget Sound to near 80 east of Puget Sound. Light wind becoming north 5 to 15 mph in the afternoon. Tonight Mostly clear. Lows 50 to 55. North wind 5 to 15 mph becoming light. Wednesday Mostly cloudy. Chance of showers in the afternoon. Highs 65 to 70. Southwest wind 5 to 15 mph. Wednesday Night Mostly cloudy. Chance of showers. Lows 45 to 50. South wind 5 to 15 mph. Thursday Cloudy in the morning...becoming partly sunny. Highs around 65. Southwest wind 5 to 15 mph shifting to the north. Thursday Night Partly cloudy. Lows 50 to 55. Friday Mostly sunny. Highs around 70. Friday Night through Saturday Night Mostly cloudy. Chance of showers. Lows 50 to 55. Highs around 65. Sunday through Monday Partly cloudy. Highs 65 to 70. Lows 50 to 55.