Marine Weather Net

Petaluma, CA Weather Forecast




Petaluma, California

 Lat: 38.23N, Lon: 122.64W

Current Conditions Updated: 254 PM PDT MON SEP 21 2026

Mostly Clear
Temp: 67°F
  • Humidity:
  • 67%
  • Winds:
  • 15 MPH SSW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.91 in.
  • Dewpoint:
  • 56°F
  • Heat index:
  • 67°F

  • Sunrise:
  • 6:55 AM PDT
  • Sunset:
  • 7:09 PM PDT
  • Moonrise:
  • 4:45 PM PDT
  • Moonset:
  • 1:40 AM PDT

REST OF TODAY

SUNNY

Hi: 70°F
Lo: 57°F

TUESDAY

SUNNY

Hi: 75°F
Lo: 57°F

WEDNESDAY

SUNNY

Hi: 90°F
Lo: 55°F

FRIDAY

SUNNY

Hi: 75°F
Lo: 59°F
Weather Forecast In Detail:
Forecast Issued: 302 PM PDT Mon Sep 21 2026

Rest Of Today...Sunny. Highs in the mid 60s to lower 80s. Southwest winds 10 to 20 mph.
Tonight...Partly cloudy in the evening then becoming mostly cloudy. Patchy fog in the evening. Areas of fog after midnight. Lows in the 40s to upper 50s. Southwest winds 5 to 15 mph.
Tuesday...Mostly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the lower 70s to mid 80s. South winds 5 to 10 mph.
Tuesday Night...Mostly clear. Areas of fog after midnight. Lows in the 40s to upper 50s. Southwest winds 5 to 10 mph...Becoming northwest after midnight.
Wednesday...Partly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the upper 70s to lower 90s. North winds up to 5 mph...Becoming southwest in the afternoon.
Wednesday Night...Mostly clear. Lows in the 50s to lower 60s.
Thursday And Thursday Night...Partly cloudy. Highs in the mid 70s to lower 90s. Lows in the mid 50s to lower 60s.
Friday...Partly cloudy in the morning then becoming sunny. Highs in the lower 70s to mid 80s.
Friday Night...Mostly clear. Lows in the 40s to upper 50s.
Saturday...Partly cloudy in the morning then becoming sunny. Highs in the upper 60s to mid 80s.
Saturday Night...Mostly clear in the evening then becoming partly cloudy. Lows in the upper 40s to mid 50s.
Sunday...Partly cloudy in the morning then becoming sunny. Highs in the upper 60s to lower 80s. && temperature / precipitation santa rosa 79 50 83 / san rafael 71 55 78 / napa 72 52 77 /
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