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Guernewood Park, California Weather Forecast
Guernewood Park, California Weather
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Weather Forecast for Guernewood Park, California : Sonoma County
Issued: 12:26 am PST Dec 18, 2025 Latitude: 38.4968576 Longitude: -123.0124997 View on Google Maps

MouseOver for Detail Forecast
Overnight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Morning Fog on Overnight 20% chance of rain on Thursday 100% chance of rain on Friday 80% chance of thunderstorms on Saturday Thunderstorms on Sunday 70% chance of rain on Monday 70% chance of rain on Tuesday 70% chance of rain on Wednesday
Low: 45°F High: 57°F High: 57°F High: 55°F High: 58°F High: 56°F High: 53°F High: 54°F
Low: 50°F Low: 50°F Low: 51°F Low: 48°F Low: 45°F Low: 46°F  
Morning Fog Rain Rain Thunderstorms Thunderstorms Rain Rain Rain
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Current Conditions at
SANTA ROSA - (KSTS)
41°
Mostly Cloudy
Fog
as of 12:53 AM PST
Rel. Humidity: 100%
Dew Point: 41°F
Visibility: 1/2 Miles
Pressure: 30.15 in.
Flight Rule: IFR
Wind Data
Calm
Current Conditions at
NAPA - (KAPC)
46°
Cloudy
Mist
as of 12:54 AM PST
Rel. Humidity: 100%
Dew Point: 46°F
Visibility: 5 Miles
Pressure: 30.16 in.
Flight Rule: LIFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 200ft
Current Conditions at
UKIAH - (KUKI)
45°
Clear
Mist
as of 1:14 AM PST
Rel. Humidity: 100%
Dew Point: 45°F
Visibility: 3/4 Miles
Pressure: 30.15 in.
Flight Rule: MVFR
Wind Data
5 MPH
190° South
Current Conditions at
VACAVILLE - (KVCB)
54°
Cloudy
as of 12:53 AM PST
Rel. Humidity: 87%
Dew Point: 50°F
Visibility: 10 Miles
Pressure: 30.16 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 1600ft
Morning Fog on Overnight Overnight... Widespread dense fog, mainly after 3am. Otherwise, mostly cloudy, with a low around 45. Calm wind.
20% chance of rain Thursday Thursday... A 20 percent chance of rain after 10am. Widespread dense fog, mainly before 10am. Otherwise, mostly cloudy, with a high near 57. Light south wind.
80% chance of rain Thursday Night Thursday Night... Rain. Areas of fog. Low around 50. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
100% chance of rain Friday Friday... Rain. High near 57. Light south wind becoming south southwest 5 to 9 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
80% chance of rain Friday Night Friday Night... Rain, mainly before 10pm. Patchy fog after 10pm. Low around 50. Light west wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
80% chance of thunderstorms Saturday Saturday... Rain likely, then showers and possibly a thunderstorm after 4pm. Areas of dense fog before 1pm. High near 55. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
90% chance of thunderstorms Saturday Night Saturday Night... Showers and possibly a thunderstorm before 7pm, then rain between 7pm and 10pm, then showers and possibly a thunderstorm after 10pm. Some of the storms could produce heavy rainfall. Patchy fog after 1am. Low around 51. Chance of precipitation is 90%.
Thunderstorms on Sunday Sunday... Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Cloudy, with a high near 58.
Rain on Sunday Night Sunday Night... Rain. Cloudy, with a low around 48.
70% chance of rain Monday Monday... Rain likely. Mostly cloudy, with a high near 56.
70% chance of rain Monday Night Monday Night... Rain likely. Patchy fog. Otherwise, mostly cloudy, with a low around 45.
70% chance of rain Tuesday Tuesday... Rain likely. Patchy fog. Otherwise, mostly cloudy, with a high near 53.
Rain on Tuesday Night Tuesday Night... Rain. Cloudy, with a low around 46.
70% chance of rain Wednesday Wednesday... Rain likely. Mostly cloudy, with a high near 54.
Current Radar Image


Sun Almanac for Guernewood Park, California
Sunrise: 07:25 AM
Sunset: 4:53 PM
Civil Sunrise:06:55 AM
Civil Sunset: 5:23 PM
Nautical Sunrise: 06:21 AM
Nautical Sunset: 5:56 PM
Astro Sunrise: 05:49 AM
Astro Sunset: 6:29 PM
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