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Deer Park, CA Weather

It is 55°F and clear in Deer Park, CA, observed at 8:15 PM PDT. Tonight: Mostly Cloudy, low 44°F. Hourly and 10-day forecast from the National Weather Service. Times are local (PDT).

Deer Park, CA current weather

55°F

Clear

H -- / L 44°Feels like 55°

Observed at Santa Rosa, Santa Rosa Sonoma County Airport (18.9 mi away), 10/30/2026, 8:15 PM 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 10/30/2026, 1:26 PM PT

  1. Now53°
  2. 10 PM52°
  3. 11 PM50°
  4. 12 AM49°Sat
  5. 1 AM48°
  6. 2 AM47°
  7. 3 AM46°
  8. 4 AM45°
  9. 5 AM44°
  10. 6 AM44°
  11. 7 AM44°
  12. 8 AM44°
  13. 9 AM47°
  14. 10 AM51°
  15. 11 AM56°
  16. 12 PM58°
  17. 1 PM60°
  18. 2 PM62°
  19. 3 PM62°
  20. 4 PM62°
  21. 5 PM60°
  22. 6 PM57°
  23. 7 PM54°18%
  24. 8 PM52°
  25. 9 PM50°
  26. 10 PM49°
  27. 11 PM48°10%
  28. 12 AM47°Sun
  29. 1 AM46°21%
  30. 1 AM46°25%
  31. 2 AM45°
  32. 3 AM44°
  33. 4 AM43°
  34. 5 AM43°
  35. 6 AM43°
  36. 7 AM43°
  37. 8 AM47°
  38. 9 AM52°
  39. 10 AM56°
  40. 11 AM60°
  41. 12 PM63°
  42. 1 PM65°
  43. 2 PM66°
  44. 3 PM66°
  45. 4 PM64°
  46. 5 PM61°
  47. 6 PM57°
  48. 7 PM53°

10-day forecast

Tap a day for details

  • Today10/30Low 44°High

    Tonight: Mostly cloudy, with a low around 44. Wind around 0 mph.

    Mostly Cloudy
  • Sat10/3125% chance of precipitationLow 43°High 62°

    Saturday: Areas of fog before 9am. Partly sunny. High near 62, with temperatures falling to around 60 in the afternoon. West wind 0 to 5 mph.

    Saturday Night: A slight chance of rain showers between 7pm and 1am, then areas of fog and a chance of rain showers. Partly cloudy, with a low around 43. West northwest wind around 2 mph. Chance of precipitation is 30%.

    Areas Of Fog then Partly Sunny
  • Sun11/1Low 42°High 66°

    Sunday: Areas of fog before 7am. Sunny, with a high near 66. North wind around 2 mph.

    Sunday Night: Mostly clear, with a low around 42. North wind around 2 mph.

    Areas Of Fog then Sunny
  • Mon11/2Low 43°High 67°

    Monday: Mostly sunny, with a high near 67.

    Monday Night: Mostly cloudy, with a low around 43.

    Mostly Sunny
  • Tue11/323% chance of precipitationLow 44°High 66°

    Tuesday: A slight chance of rain after 10am. Mostly sunny, with a high near 66.

    Tuesday Night: A slight chance of rain before 10pm. Mostly cloudy, with a low around 44.

    Slight Chance Light Rain
  • Wed11/418% chance of precipitationLow 43°High 66°

    Wednesday: Patchy fog before 7am. Partly sunny, with a high near 66.

    Wednesday Night: Areas of fog and a slight chance of rain after 4am. Mostly cloudy, with a low around 43.

    Patchy Fog then Partly Sunny
  • Thu11/518% chance of precipitationLow 44°High 64°

    Thursday: Areas of fog and a slight chance of rain before 4pm. Partly sunny, with a high near 64.

    Thursday Night: Partly cloudy, with a low around 44.

    Areas Of Fog
  • Fri11/6Low High 68°

    Friday: Mostly sunny, with a high near 68.

    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.

Forecast for 38.535, -122.469 from the NWS MTR office, updated 10/30/2026, 1:26 PM PT · Official forecast on weather.gov

Days 9 to 10: NOAA National Blend of Models, station KSTS (Santa Rosa/Schulz Arpt, 19 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. Now53°Mostly Cloudy1%0 mph
  2. 10 PM52°Mostly Cloudy1%0 mph
  3. 11 PM50°Mostly Cloudy1%0 mph
  4. 12 AM49°Mostly Cloudy1%0 mph
  5. 1 AM48°Mostly Cloudy0%0 mph
  6. 2 AM47°Mostly Cloudy1%0 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 Deer Park, CA right now?
The latest observation from Santa Rosa, Santa Rosa Sonoma County Airport was 55°F and clear, reported at 10/30/2026, 8:15 PM PDT.
Will it rain in Deer Park, 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 Deer Park, CA?
The first 8 days come from the National Weather Service forecast. Days 9 to 10 (Nov 7 to Nov 8) come from the NOAA National Blend of Models, with highs of 74°F to 75°F. Model guidance this far out often changes.
What time is sunrise and sunset in Deer Park, CA today?
Sunrise is about 7:34 AM PDT and sunset is about 6:12 PM PDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Deer Park, CA?
At Saint Helena, the 1991 to 2020 normal high in October is 78°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: COOLEY Fire (1,365 acres)

UV and air quality forecast

EPA and AirNow

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

UV index guide · Air quality

Drought

By county

Napa County, week of 10/27/2026

27% of the county is abnormally dry. No drought.

Tides nearby

NOAA tide stations

Sun and moon

Local time, center of the area

Sunrise
7:34 AM
Sunset
6:12 PM
Daylight
10 hr 37 min
Moon
Waning Gibbous 74% lit
First light (civil dawn)
7:07 AM
Last light (civil dusk)
6:39 PM
Moonrise
10:02 PM
Moonset
12:51 PM

Normal October weather

Climate

Normal October high 78°, low 49°, precipitation 1.65 in for the month. 1991 to 2020 normals at Saint Helena, 2 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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