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Union, WA Weather

Tonight: Chance Light Rain, low 37°F. Hourly and 10-day forecast from the National Weather Service. Times are local (PDT).

Union, WA current weather

46°F

Chance Light Rain

Forecast for this hour. No recent report from a nearby station.

H -- / L 37°

No recent station report. NWS hourly forecast updated 10/29/2026, 11:26 AM PT

Hourly forecast

NWS, updated 10/29/2026, 11:26 AM PT

  1. Now46°48%
  2. 7 PM46°36%
  3. 8 PM45°42%
  4. 9 PM44°34%
  5. 10 PM43°21%
  6. 11 PM43°19%
  7. 12 AM43°24%Fri
  8. 1 AM42°29%
  9. 2 AM42°38%
  10. 3 AM42°35%
  11. 4 AM41°30%
  12. 5 AM40°46%
  13. 6 AM40°60%
  14. 7 AM38°50%
  15. 8 AM39°63%
  16. 9 AM39°50%
  17. 10 AM41°43%
  18. 11 AM43°39%
  19. 12 PM45°37%
  20. 1 PM47°38%
  21. 2 PM47°55%
  22. 3 PM48°59%
  23. 4 PM48°63%
  24. 5 PM47°26%
  25. 6 PM46°22%
  26. 7 PM46°30%
  27. 8 PM44°26%
  28. 9 PM43°10%
  29. 10 PM43°
  30. 11 PM42°
  31. 12 AM41°Sat
  32. 1 AM41°
  33. 2 AM40°
  34. 3 AM40°
  35. 4 AM38°
  36. 5 AM38°
  37. 6 AM38°
  38. 7 AM37°
  39. 8 AM37°
  40. 9 AM39°
  41. 10 AM41°
  42. 11 AM44°
  43. 12 PM47°
  44. 1 PM49°
  45. 2 PM51°
  46. 3 PM52°
  47. 4 PM51°
  48. 5 PM50°

10-day forecast

Tap a day for details

  • Today10/2948% chance of precipitationLow 37°High

    Tonight: A chance of rain. Mostly cloudy. Low around 37, with temperatures rising to around 40 overnight. Northeast wind around 3 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

    Chance Light Rain
  • Fri10/3063% chance of precipitationLow 35°High 48°

    Friday: Rain likely. Mostly cloudy, with a high near 48. East southeast wind around 2 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

    Friday Night: A chance of rain before 9pm. Mostly cloudy. Low around 35, with temperatures rising to around 38 overnight. North northeast wind around 2 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

    Light Rain Likely
  • Sat10/31Low 35°High 52°

    Saturday: Partly sunny, with a high near 52. North northeast wind around 2 mph.

    Saturday Night: Mostly cloudy, with a low around 35. North northeast wind around 2 mph.

    Partly Sunny
  • Sun11/1Low 36°High 53°

    Sunday: Mostly sunny, with a high near 53.

    Sunday Night: Partly cloudy, with a low around 36.

    Mostly Sunny
  • Mon11/225% chance of precipitationLow 40°High 53°

    Monday: A slight chance of rain between 10am and 4pm. Mostly cloudy, with a high near 53.

    Monday Night: A chance of rain between 10pm and 4am. Mostly cloudy, with a low around 40.

    Slight Chance Light Rain
  • Tue11/310% chance of precipitationLow 40°High 55°

    Tuesday: Partly sunny, with a high near 55.

    Tuesday Night: Partly cloudy, with a low around 40.

    Partly Sunny
  • Wed11/422% chance of precipitationLow 42°High 57°

    Wednesday: A slight chance of rain after 4pm. Partly sunny, with a high near 57.

    Wednesday Night: A slight chance of rain. Mostly cloudy, with a low around 42.

    Partly Sunny then Slight Chance Light Rain
  • Thu11/531% chance of precipitationLow High 55°

    Thursday: A chance of rain before 5pm. Partly sunny, with a high near 55.

    Chance Light Rain
  • Fri11/6Model blend34% chance of precipitationLow 38°High 56°

    Friday: Chance of rain. High near 56°. Low that night near 38°. About 0.35 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Sat11/7Model blend55% chance of precipitationLow 39°High 57°

    Saturday: Chance of rain. High near 57°. Low that night near 39°. About 0.77 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 47.346, -123.083 from the NWS SEW office, updated 10/29/2026, 11:26 AM PT · Official forecast on weather.gov

Days 9 to 10: NOAA National Blend of Models, station KPWT (Bremerton Arpt, 18 mi), model run 10/29/2026, 1:00 PM PDT

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now46°Chance Light Rain48%2 mph
  2. 7 PM46°Chance Light Rain36%2 mph
  3. 8 PM45°Chance Light Rain42%2 mph
  4. 9 PM44°Chance Light Rain34%2 mph
  5. 10 PM43°Slight Chance Light Rain21%2 mph
  6. 11 PM43°Slight Chance Light Rain19%3 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

Will it rain in Union, WA in the next 24 hours?
The hourly forecast shows a 60% chance of precipitation around 10/30/2026, 6:00 AM PDT.
What is the 10-day forecast for Union, WA?
The first 8 days come from the National Weather Service forecast. Days 9 to 10 (Nov 6 to Nov 7) come from the NOAA National Blend of Models, with highs of 56°F to 57°F and up to a 55% chance of precipitation. Model guidance this far out often changes.
What time is sunrise and sunset in Union, WA today?
Sunrise is about 7:51 AM PDT and sunset is about 6:00 PM PDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Union, WA?
At Cushman Powerhouse #2, the 1991 to 2020 normal high in October is 58°F and the normal low is 44°F.

Nearby hazards

Washington hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: None reported

UV and air quality forecast

EPA and AirNow

AQI forecast tomorrow (Shelton)
GoodPM2.5

UV index guide · Air quality

Drought

By county

Mason County, week of 10/27/2026

22% of the county is in moderate drought or worse.

Tides nearby

NOAA tide stations

Beaches nearby

EPA BEACON beaches

Sun and moon

Local time, center of the area

Sunrise
7:51 AM
Sunset
6 PM
Daylight
10 hr 8 min
Moon
Waning Gibbous 84% lit
First light (civil dawn)
7:20 AM
Last light (civil dusk)
6:31 PM
Moonrise
8:11 PM
Moonset
12:35 PM

Normal October weather

Climate

Normal October high 58°, low 44°, precipitation 9.10 in for the month. 1991 to 2020 normals at Cushman Powerhouse #2, 4 mi away.

Other places nearby

Data sources

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About this data

Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.

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