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Hot Temperatures in the Northwest U.S.; Tropical Rainfall Potential in the Southwest U.S.

Hot to extremely hot temperatures are in place again Thursday across the interior northwest U.S. A combination of monsoonal moisture and tropical moisture ahead of tropical cyclone Lorena will bring a marginal to slight risk of excessive rainfall across the southwest U.S. through Saturday which may bring areas of flooding. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

Lat: 38.5°NLon: 122.81667°WElev: 125.0ft.

Overcast

57°F

14°C

Humidity 93%
Wind Speed SSE 4 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 03 Sep 11:53 PM PDT
Extended Forecast for

2 Miles ESE Guerneville CA

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 53. Calm wind.

    Low: 53 °F

    Patchy Fog

  • Thursday

    Thursday: Widespread fog before 10am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 80. Calm wind becoming west southwest 5 to 9 mph in the afternoon.

    High: 80 °F

    Fog then
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 10pm. Otherwise, mostly clear, with a low around 54. West southwest wind around 6 mph becoming calm in the evening.

    Low: 54 °F

    Patchy Fog

  • Friday

    Friday: Areas of fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 82. Calm wind becoming west southwest 5 to 9 mph in the afternoon.

    High: 82 °F

    Areas Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog after 3am. Otherwise, mostly clear, with a low around 54. West wind 5 to 9 mph.

    Low: 54 °F

    Clear then
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, sunny, with a high near 82.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 54.

    Low: 54 °F

    Clear then
    Patchy Fog

  • Sunday

    Sunday: Areas of fog before 9am. Otherwise, sunny, with a high near 81.

    High: 81 °F

    Areas Fog
    then Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear
    then Patchy
    Fog

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 53. Calm wind.
Thursday
Widespread fog before 10am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 80. Calm wind becoming west southwest 5 to 9 mph in the afternoon.
Thursday Night
Patchy fog after 10pm. Otherwise, mostly clear, with a low around 54. West southwest wind around 6 mph becoming calm in the evening.
Friday
Areas of fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 82. Calm wind becoming west southwest 5 to 9 mph in the afternoon.
Friday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 54. West wind 5 to 9 mph.
Saturday
Patchy fog before 9am. Otherwise, sunny, with a high near 82.
Saturday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 54.
Sunday
Areas of fog before 9am. Otherwise, sunny, with a high near 81.
Sunday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 55.
Monday
Patchy drizzle. Widespread fog, mainly before 8am. Otherwise, mostly sunny, with a high near 79.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 56.
Tuesday
Patchy drizzle. Areas of fog. Otherwise, mostly sunny, with a high near 78.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 54.
Wednesday
Patchy drizzle. Areas of fog. Otherwise, mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Guerneville CA
 38.5°N 122.95°W (Elev. 79 ft)
Last Update:
1:26 pm PDT Sep 3, 2025
Forecast Valid:
12am PDT Sep 4, 2025-6pm PDT Sep 10, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation