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Union, OR Weather

It is 45°F in Union, OR, observed at 9:15 PM PDT. Tonight: Slight Chance Rain Showers then Mostly Cloudy, low 29°F. Hourly and 7-day forecast from the National Weather Service. Times are local (PDT).

Union, OR current weather

45°F

Slight Chance Rain Showers

H -- / L 29°Feels like 45°

  • No rain expected in the next 12 hours

Observed at DW6879 Union (0.8 mi away), 10/28/2026, 9:15 PM PDT

Hourly forecast

NWS, updated 10/28/2026, 3:01 PM PT

  1. Now42°22%
  2. 10 PM41°22%
  3. 11 PM40°
  4. 12 AM39°Thu
  5. 1 AM38°
  6. 2 AM36°
  7. 3 AM35°
  8. 4 AM33°
  9. 5 AM32°
  10. 6 AM31°
  11. 7 AM30°
  12. 8 AM31°
  13. 9 AM36°
  14. 10 AM42°
  15. 11 AM46°
  16. 12 PM49°
  17. 1 PM50°
  18. 2 PM52°
  19. 3 PM53°
  20. 4 PM53°
  21. 5 PM54°
  22. 6 PM51°
  23. 7 PM48°
  24. 8 PM47°
  25. 9 PM43°
  26. 10 PM42°
  27. 11 PM41°
  28. 12 AM40°Fri
  29. 1 AM39°
  30. 2 AM38°
  31. 3 AM37°
  32. 4 AM35°
  33. 5 AM34°
  34. 6 AM33°
  35. 7 AM33°
  36. 8 AM33°
  37. 9 AM37°
  38. 10 AM43°
  39. 11 AM48°
  40. 12 PM51°
  41. 1 PM53°
  42. 2 PM54°
  43. 3 PM55°
  44. 4 PM55°
  45. 5 PM54°
  46. 6 PM51°
  47. 7 PM47°
  48. 8 PM43°

7-day forecast

Tap a day for details

  • Today10/2822% chance of precipitationLow 29°High

    Tonight: A slight chance of rain showers before 11pm. Mostly cloudy. Low around 29, with temperatures rising to around 32 overnight. East wind around 2 mph. Chance of precipitation is 20%.

    Slight Chance Rain Showers then Mostly Cloudy
  • Thu10/29Low 31°High 56°

    Thursday: Partly sunny. High near 56, with temperatures falling to around 54 in the afternoon. Southwest wind 1 to 12 mph, with gusts as high as 18 mph.

    Thursday Night: Cloudy. Low around 31, with temperatures rising to around 34 overnight. South wind around 5 mph.

    Partly Sunny
  • Fri10/3013% chance of precipitationLow 30°High 57°

    Friday: Mostly cloudy, with a high near 57. South wind 2 to 8 mph.

    Friday Night: Mostly cloudy, with a low around 30. North wind 1 to 5 mph.

    Mostly Cloudy
  • Sat10/3175% chance of precipitationLow 31°High 55°

    Saturday: Rain showers likely after 11am. Mostly cloudy, with a high near 55. Chance of precipitation is 60%.

    Saturday Night: Rain showers before 4am, then rain and snow showers likely. Mostly cloudy, with a low around 31. Chance of precipitation is 80%.

    Rain Showers Likely
  • Sun11/160% chance of precipitationLow 26°High 49°

    Sunday: Rain and snow showers likely before 4pm. Partly sunny, with a high near 49. Chance of precipitation is 60%.

    Sunday Night: Partly cloudy, with a low around 26.

    Rain And Snow Showers Likely
  • Mon11/211% chance of precipitationLow 30°High 54°

    Monday: Mostly sunny, with a high near 54.

    Monday Night: Mostly cloudy, with a low around 30.

    Mostly Sunny
  • Tue11/312% chance of precipitationLow 31°High 56°

    Tuesday: Partly sunny, with a high near 56.

    Tuesday Night: Partly cloudy, with a low around 31.

    Partly Sunny
  • Wed11/4Low High 59°

    Wednesday: Mostly sunny, with a high near 59.

    Mostly Sunny

Forecast for 45.209, -117.871 from the NWS PDT office, updated 10/28/2026, 3:01 PM PT · Official forecast on weather.gov

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. Now42°Slight Chance Rain Showers22%2 mph
  2. 10 PM41°Slight Chance Rain Showers22%2 mph
  3. 11 PM40°Mostly Cloudy8%2 mph
  4. 12 AM39°Partly Cloudy8%2 mph
  5. 1 AM38°Mostly Cloudy8%2 mph
  6. 2 AM36°Mostly Cloudy4%2 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

What is the weather in Union, OR right now?
The latest observation from DW6879 Union was 45°F, reported at 10/28/2026, 9:15 PM PDT.
Will it rain in Union, OR in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What time is sunrise and sunset in Union, OR today?
Sunrise is about 7:25 AM PDT and sunset is about 5:44 PM PDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Union, OR?
At Union, the 1991 to 2020 normal high in October is 63°F and the normal low is 34°F.

Nearby hazards

Oregon 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: Hagen Fire (61,380 acres), McCully Fire (13,604 acres), North Cayuse Fire (4,887 acres), Bradley Flats Fire (227 acres), Black Mountain Fire (0 acres)

UV and air quality forecast

EPA and AirNow

UV index today (Union)
2Low
AQI forecast tomorrow (Walla Walla)
GoodPM2.5

UV index guide · Air quality

Drought

By county

Union County, week of 10/20/2026

100% of the county is in moderate drought or worse, 56% in extreme drought or worse.

Sun and moon

Local time, center of the area

Sunrise
7:25 AM
Sunset
5:44 PM
Daylight
10 hr 20 min
Moon
Waning Gibbous 90% lit
First light (civil dawn)
6:54 AM
Last light (civil dusk)
6:15 PM
Moonrise
7 PM
Moonset
10:50 AM

Normal October weather

Climate

Normal October high 63°, low 34°, precipitation 1.15 in for the month. 1991 to 2020 normals at Union, 1 mi away.

Other places nearby

Data sources

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About this data

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