Weather forecast for: Union WA
Last Update: 1:20 pm PDT Oct 15, 2026
Tonight: Partly cloudy, with a low around 50. Northeast wind 5 to 8 mph becoming calm after midnight.
Friday: Mostly sunny, with a high near 70. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Friday Night: A chance of rain between 1am and 4am. Increasing clouds, with a low around 53. Southwest wind 10 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 62. Southwest wind 8 to 16 mph, with gusts as high as 23 mph.
Saturday Night: Partly cloudy, with a low around 41. West northwest wind 5 to 7 mph becoming calm in the evening.
Sunday: Mostly sunny, with a high near 59.
Sunday Night: Mostly cloudy, with a low around 42.
Monday: A slight chance of rain. Mostly cloudy, with a high near 55.
Monday Night: A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 42.
Tuesday: Mostly sunny, with a high near 59.
Tuesday Night: Mostly clear, with a low around 40.
Wednesday: Mostly sunny, with a high near 60.
Wednesday Night: A chance of rain. Partly cloudy, with a low around 44.
Thursday: A slight chance of rain. Mostly cloudy, with a high near 56.