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Monte Rio, CA Weather

It is 46°F and clear in Monte Rio, CA, observed at 12:45 AM PDT. Today: Mostly Sunny, high 58°F, low 46°F. Hourly and 10-day forecast from the National Weather Service. Times are local (PDT).

Monte Rio, CA current weather

46°F

Clear

H 58° / L 46°Feels like 46°

Observed at Santa Rosa, Santa Rosa Sonoma County Airport (10.9 mi away), 10/31/2026, 12:45 AM PDT

1 active alert

From the National Weather Service for this forecast zone or county

State alerts

Minor1Minimal to no known threat

Hourly forecast

NWS, updated 10/31/2026, 12:46 AM PT

  1. Now48°
  2. 2 AM47°
  3. 3 AM47°
  4. 4 AM46°
  5. 5 AM46°
  6. 6 AM46°
  7. 7 AM46°
  8. 8 AM46°
  9. 9 AM47°
  10. 10 AM49°
  11. 11 AM53°
  12. 12 PM56°
  13. 1 PM57°
  14. 2 PM58°
  15. 3 PM58°10%
  16. 4 PM56°12%
  17. 5 PM55°
  18. 6 PM53°
  19. 7 PM50°15%
  20. 8 PM50°21%
  21. 9 PM49°29%
  22. 10 PM48°46%
  23. 11 PM48°47%
  24. 12 AM49°37%Sun
  25. 1 AM48°24%
  26. 1 AM48°12%
  27. 2 AM47°
  28. 3 AM47°
  29. 4 AM47°
  30. 5 AM46°
  31. 6 AM46°
  32. 7 AM46°
  33. 8 AM47°
  34. 9 AM50°
  35. 10 AM53°
  36. 11 AM58°
  37. 12 PM59°
  38. 1 PM60°
  39. 2 PM61°
  40. 3 PM60°
  41. 4 PM58°
  42. 5 PM56°
  43. 6 PM54°
  44. 7 PM51°
  45. 8 PM49°
  46. 9 PM48°
  47. 10 PM47°
  48. 11 PM46°

10-day forecast

Tap a day for details

  • Today10/3112% chance of precipitationLow 46°High 58°

    Saturday: Mostly sunny. High near 58, with temperatures falling to around 55 in the afternoon. West northwest wind 1 to 7 mph. New rainfall amounts less than a tenth of an inch possible.

    Overnight: Mostly cloudy, with a low around 46. Northwest wind around 3 mph.

    Mostly Sunny
  • Sun11/1Low 46°High 61°

    Sunday: Sunny, with a high near 61. Northwest wind 2 to 7 mph.

    Sunday Night: Mostly clear, with a low around 46. North northwest wind 2 to 7 mph.

    Sunny
  • Mon11/243% chance of precipitationLow 49°High 63°

    Monday: Partly sunny, with a high near 63.

    Monday Night: A chance of rain showers after 10pm. Mostly cloudy, with a low around 49.

    Partly Sunny
  • Tue11/349% chance of precipitationLow 48°High 61°

    Tuesday: A chance of rain showers before 4pm, then a chance of rain. Partly sunny, with a high near 61.

    Tuesday Night: A chance of rain. Mostly cloudy, with a low around 48.

    Chance Rain Showers then Chance Light Rain
  • Wed11/420% chance of precipitationLow 50°High 62°

    Wednesday: A slight chance of rain. Mostly sunny, with a high near 62.

    Wednesday Night: A slight chance of rain. Partly cloudy, with a low around 50.

    Slight Chance Light Rain
  • Thu11/515% chance of precipitationLow 47°High 63°

    Thursday: A slight chance of rain before 10am. Mostly sunny, with a high near 63.

    Thursday Night: A slight chance of rain between 10pm and 4am. Partly cloudy, with a low around 47.

    Slight Chance Light Rain then Mostly Sunny
  • Fri11/614% chance of precipitationLow High 66°

    Friday: Mostly sunny, with a high near 66.

    Mostly Sunny
  • Sat11/7Model blendLow 42°High 75°

    Saturday: Partly cloudy. High near 75°. Low that night near 42°.

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

  • Sun11/8Model blendLow 43°High 74°

    Sunday: Partly cloudy. High near 74°. Low that night near 43°.

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

  • Mon11/9Model blend19% chance of precipitationLow 42°High 70°

    Monday: Mostly cloudy. High near 70°. Low that night near 42°. About 0.08 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 38.467, -123.014 from the NWS MTR office, updated 10/31/2026, 12:46 AM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KSTS (Santa Rosa/Schulz Arpt, 11 mi), model run 10/30/2026, 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. Now48°Partly Cloudy0%3 mph
  2. 2 AM47°Mostly Cloudy1%3 mph
  3. 3 AM47°Mostly Cloudy1%2 mph
  4. 4 AM46°Mostly Cloudy1%2 mph
  5. 5 AM46°Partly Cloudy1%2 mph
  6. 6 AM46°Mostly Sunny1%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 Monte Rio, CA right now?
The latest observation from Santa Rosa, Santa Rosa Sonoma County Airport was 46°F and clear, reported at 10/31/2026, 12:45 AM PDT.
What is the high temperature today in Monte Rio, CA?
The National Weather Service forecast for saturday calls for a high near 58°F. Mostly Sunny.
Will it rain in Monte Rio, 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 Monte Rio, CA?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 7 to Nov 9) come from the NOAA National Blend of Models, with highs of 70°F to 75°F. Model guidance this far out often changes.
What time is sunrise and sunset in Monte Rio, CA today?
Sunrise is about 7:37 AM PDT and sunset is about 6:13 PM PDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Monte Rio, CA?
At Occidental, the 1991 to 2020 normal high in October is 73°F and the normal low is 52°F.

Rain and snow totals

Next 3 days, NWS forecast grid

Rain (liquid)
0.03 in
Snow
0.00 in
Ice
0.00 in

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: COOLEY Fire (1,365 acres)

UV and air quality forecast

EPA and AirNow

AQI forecast today (Santa Rosa)
44GoodPM2.5
AQI forecast tomorrow (Santa Rosa)
33GoodPM2.5

UV index guide · Air quality

Drought

By county

Sonoma County, week of 10/27/2026

No drought or abnormal dryness in this county.

Tides nearby

NOAA tide stations

Beaches nearby

EPA BEACON beaches

Sun and moon

Local time, center of the area

Sunrise
7:37 AM
Sunset
6:13 PM
Daylight
10 hr 35 min
Moon
Waning Gibbous 72% lit
First light (civil dawn)
7:10 AM
Last light (civil dusk)
6:40 PM
Moonrise
11:21 PM
Moonset
1:42 PM

Normal October weather

Climate

Normal October high 73°, low 52°, precipitation 2.65 in for the month. 1991 to 2020 normals at Occidental, 6 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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