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Onalaska, WA 98542 Weather

Tonight: Chance Light Rain, low 32°F. Hourly and 10-day forecast from the National Weather Service. Times are local (PDT).

Onalaska, WA 98542 current weather

47°F

Chance Light Rain

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

H -- / L 32°

No recent station report. NWS hourly forecast updated 10/29/2026, 7:08 PM PT

Hourly forecast

NWS, updated 10/29/2026, 7:08 PM PT

  1. Now47°35%
  2. 8 PM43°40%
  3. 9 PM42°36%
  4. 10 PM41°27%
  5. 11 PM40°30%
  6. 12 AM39°31%Fri
  7. 1 AM38°25%
  8. 2 AM37°35%
  9. 3 AM37°32%
  10. 4 AM35°35%
  11. 5 AM35°31%
  12. 6 AM35°34%
  13. 7 AM33°31%
  14. 8 AM34°47%
  15. 9 AM36°34%
  16. 10 AM41°24%
  17. 11 AM44°29%
  18. 12 PM47°25%
  19. 1 PM49°23%
  20. 2 PM51°25%
  21. 3 PM52°12%
  22. 4 PM52°15%
  23. 5 PM50°
  24. 6 PM49°
  25. 7 PM46°
  26. 8 PM42°
  27. 9 PM41°
  28. 10 PM39°
  29. 11 PM38°
  30. 12 AM37°Sat
  31. 1 AM36°
  32. 2 AM35°
  33. 3 AM35°
  34. 4 AM33°
  35. 5 AM32°
  36. 6 AM32°
  37. 7 AM32°
  38. 8 AM32°
  39. 9 AM35°
  40. 10 AM40°
  41. 11 AM45°
  42. 12 PM49°
  43. 1 PM51°
  44. 2 PM53°
  45. 3 PM54°
  46. 4 PM53°
  47. 5 PM52°
  48. 6 PM49°

10-day forecast

Tap a day for details

  • Today10/2940% chance of precipitationLow 32°High

    Tonight: A chance of rain. Mostly cloudy. Low around 32, with temperatures rising to around 35 overnight. East northeast wind around 2 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

    Chance Light Rain
  • Fri10/3047% chance of precipitationLow 30°High 52°

    Friday: A chance of rain before 5pm. Mostly sunny. High near 52, with temperatures falling to around 50 in the afternoon. South southeast wind around 2 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

    Friday Night: Partly cloudy. Low around 30, with temperatures rising to around 32 overnight. East southeast wind 1 to 5 mph.

    Chance Light Rain
  • Sat10/31Low 30°High 54°

    Saturday: Partly sunny, with a high near 54. East northeast wind around 2 mph.

    Saturday Night: Mostly cloudy, with a low around 30. Wind around 0 mph.

    Partly Sunny
  • Sun11/1Low 30°High 55°

    Sunday: Mostly sunny, with a high near 55.

    Sunday Night: Partly cloudy, with a low around 30.

    Mostly Sunny
  • Mon11/226% chance of precipitationLow 36°High 56°

    Monday: Mostly cloudy, with a high near 56.

    Monday Night: A chance of rain between 10pm and 4am. Mostly cloudy, with a low around 36.

    Mostly Cloudy
  • Tue11/3Low 35°High 58°

    Tuesday: Mostly cloudy, with a high near 58.

    Tuesday Night: Partly cloudy, with a low around 35.

    Mostly Cloudy
  • Wed11/418% chance of precipitationLow 38°High 59°

    Wednesday: A slight chance of rain after 4pm. Partly sunny, with a high near 59.

    Wednesday Night: A slight chance of rain. Mostly cloudy, with a low around 38.

    Partly Sunny then Slight Chance Light Rain
  • Thu11/528% chance of precipitationLow High 58°

    Thursday: A chance of rain before 5pm. Mostly cloudy, with a high near 58.

    Chance Light Rain
  • Fri11/6Model blend36% chance of precipitationLow 41°High 58°

    Friday: Chance of rain. High near 58°. Low that night near 41°. About 0.03 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 blend50% chance of precipitationLow 42°High 58°

    Saturday: Chance of rain. High near 58°. Low that night near 42°. 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.

Forecast for 46.527, -122.676 from the NWS SEW office, updated 10/29/2026, 7:08 PM PT · Official forecast on weather.gov

Days 9 to 10: NOAA National Blend of Models, station KCLS (Chehalis-Centralia 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. Now47°Chance Light Rain35%0 mph
  2. 8 PM43°Chance Light Rain40%0 mph
  3. 9 PM42°Chance Light Rain36%0 mph
  4. 10 PM41°Chance Light Rain27%0 mph
  5. 11 PM40°Chance Light Rain30%1 mph
  6. 12 AM39°Chance Light Rain31%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

Will it rain in Onalaska, WA 98542 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 is the 10-day forecast for Onalaska, WA 98542?
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 near 58°F and up to a 50% chance of precipitation. Model guidance this far out often changes.
What time is sunrise and sunset in Onalaska, WA 98542 today?
Sunrise is about 7:48 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 Onalaska, WA 98542?
At Mayfield Pwr Plt, the 1991 to 2020 normal high in October is 62°F and the normal low is 43°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 (Chehalis)
GoodPM2.5

UV index guide · Air quality

Drought

By county

Lewis County, week of 10/27/2026

66% of the county is abnormally dry. No drought.

Sun and moon

Local time, center of the area

Sunrise
7:48 AM
Sunset
6 PM
Daylight
10 hr 11 min
Moon
Waning Gibbous 83% lit
First light (civil dawn)
7:17 AM
Last light (civil dusk)
6:31 PM
Moonrise
8:14 PM
Moonset
12:28 PM

Normal October weather

Climate

Normal October high 62°, low 43°, precipitation 5.39 in for the month. 1991 to 2020 normals at Mayfield Pwr Plt, 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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