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Rio Oso, CA Weather

Today: Mostly Sunny, high 70°F, low 48°F. Hourly and 10-day forecast from the National Weather Service. Times are local (PDT).

Rio Oso, CA current weather

52°F

Mostly Cloudy

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

H 70° / L 48°

  • No rain expected in the next 12 hours

No recent station report. NWS hourly forecast updated 10/29/2026, 11:31 PM PT

Hourly forecast

NWS, updated 10/29/2026, 11:31 PM PT

  1. Now52°
  2. 2 AM52°
  3. 3 AM51°
  4. 4 AM50°
  5. 5 AM50°
  6. 6 AM50°
  7. 7 AM48°
  8. 8 AM50°
  9. 9 AM53°
  10. 10 AM58°
  11. 11 AM61°
  12. 12 PM64°
  13. 1 PM66°
  14. 2 PM68°
  15. 3 PM68°
  16. 4 PM69°
  17. 5 PM70°
  18. 6 PM67°
  19. 7 PM63°
  20. 8 PM60°
  21. 9 PM56°
  22. 10 PM54°
  23. 11 PM53°
  24. 12 AM52°Sat
  25. 1 AM52°
  26. 2 AM51°
  27. 3 AM50°
  28. 4 AM50°
  29. 5 AM50°
  30. 6 AM49°
  31. 7 AM48°
  32. 8 AM50°
  33. 9 AM52°
  34. 10 AM56°
  35. 11 AM59°21%
  36. 12 PM60°23%
  37. 1 PM62°17%
  38. 2 PM62°
  39. 3 PM63°
  40. 4 PM63°
  41. 5 PM63°26%
  42. 6 PM62°26%
  43. 7 PM59°26%
  44. 8 PM57°26%
  45. 9 PM56°26%
  46. 10 PM55°26%
  47. 11 PM54°17%
  48. 12 AM53°17%Sun

10-day forecast

Tap a day for details

  • Today10/30Low 48°High 70°

    Friday: Mostly sunny, with a high near 70. South wind around 3 mph.

    Overnight: Mostly cloudy. Low around 48, with temperatures rising to around 50 overnight. Southeast wind around 2 mph.

    Mostly Sunny
  • Sat10/3126% chance of precipitationLow 47°High 64°

    Saturday: A chance of rain after 11am. Cloudy, with a high near 64. South southeast wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

    Saturday Night: A chance of rain before 4am. Mostly cloudy, with a low around 47. Southeast wind around 5 mph. Chance of precipitation is 30%.

    Chance Light Rain
  • Sun11/1Low 42°High 67°

    Sunday: Mostly sunny, with a high near 67.

    Sunday Night: Mostly clear, with a low around 42.

    Mostly Sunny
  • Mon11/2Low 46°High 66°

    Monday: Mostly sunny, with a high near 66.

    Monday Night: Partly cloudy, with a low around 46.

    Mostly Sunny
  • Tue11/318% chance of precipitationLow 45°High 67°

    Tuesday: A slight chance of rain between 10am and 4pm. Partly sunny, with a high near 67.

    Tuesday Night: Partly cloudy, with a low around 45.

    Slight Chance Light Rain
  • Wed11/427% chance of precipitationLow 46°High 67°

    Wednesday: Mostly sunny, with a high near 67.

    Wednesday Night: A chance of rain after 4am. Partly cloudy, with a low around 46.

    Mostly Sunny
  • Thu11/527% chance of precipitationLow High 65°

    Thursday: A chance of rain. Mostly sunny, with a high near 65.

    Chance Light Rain
  • Fri11/6Model blend21% chance of precipitationLow 44°High 68°

    Friday: Mostly sunny, slight chance of rain. High near 68°. Low that night near 44°. About 0.02 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 blendLow 45°High 68°

    Saturday: Mostly sunny. High near 68°. Low that night near 45°.

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

  • Sun11/8Model blend17% chance of precipitationLow 45°High 66°

    Sunday: Partly cloudy, slight chance of rain. High near 66°. Low that night near 45°. About 0.05 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 38.950, -121.530 from the NWS STO office, updated 10/29/2026, 11:31 PM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KLHM (Lincoln Rgnl, 10 mi), model run 10/29/2026, 7:00 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. Now52°Mostly Cloudy0%2 mph
  2. 2 AM52°Mostly Cloudy0%2 mph
  3. 3 AM51°Mostly Cloudy1%2 mph
  4. 4 AM50°Mostly Cloudy1%2 mph
  5. 5 AM50°Mostly Cloudy2%2 mph
  6. 6 AM50°Mostly Cloudy2%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 high temperature today in Rio Oso, CA?
The National Weather Service forecast for friday calls for a high near 70°F. Mostly Sunny.
Will it rain in Rio Oso, CA 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 Rio Oso, CA?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 6 to Nov 8) come from the NOAA National Blend of Models, with highs of 66°F to 68°F. Model guidance this far out often changes.
What time is sunrise and sunset in Rio Oso, CA today?
Sunrise is about 7:31 AM PDT and sunset is about 6:07 PM PDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Rio Oso, CA?
At Marysville Yuba CO AP, the 1991 to 2020 normal high in October is 79°F and the normal low is 49°F.

Nearby hazards

California 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 today (Lincoln)
43GoodOzone
AQI forecast tomorrow (Lincoln)
37GoodOzone

UV index guide · Air quality

Drought

By county

Sutter County, week of 10/27/2026

100% of the county is abnormally dry. No drought.

Sun and moon

Local time, center of the area

Sunrise
7:31 AM
Sunset
6:07 PM
Daylight
10 hr 36 min
Moon
Waning Gibbous 81% lit
First light (civil dawn)
7:04 AM
Last light (civil dusk)
6:35 PM
Moonrise
9:56 PM
Moonset
12:48 PM

Normal October weather

Climate

Normal October high 79°, low 49°, precipitation 1.03 in for the month. 1991 to 2020 normals at Marysville Yuba CO AP, 11 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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