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City of Petaluma, CAPetaluma, CA 7-Day Night Weather Forecast
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Petaluma, CA Weather Forecast
Petaluma, CA Weather Forecast Date: 602 AM PDT Mon Sep 21 2026
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Today... Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the mid 60s to lower 80s. Southwest winds 5 to 10 mph increasing to 10 to 20 mph in the afternoon.
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 except patchy 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... Partly cloudy. Highs in the upper 70s to lower 90s. Lows in the mid 50s to lower 60s.
Thursday Night... Partly cloudy. Highs in the upper 70s to lower 90s. Lows in the mid 50s to lower 60s.
Friday... Partly cloudy in the morning then becoming sunny. Highs in the 70s to 80s.
Friday Night... Mostly clear. Lows in the 50s.
Saturday... Partly cloudy in the morning then becoming sunny. Highs in the lower 70s to mid 80s.
Saturday Night... Mostly clear. Lows in the upper 40s to mid 50s.
POP = Probability of Precipitation
Petaluma Radar Loop
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