In March, Petaluma typically sees daytime highs of 15.7°C and overnight lows around 5.9°C. Compared to the annual average high of 18.5°C, March runs -2.8°C.
March in Petaluma averages a daytime high of 15.7°C and an overnight low of 5.9°C.
March runs -2.8°C compared to Petaluma's annual average high of 18.5°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 15.7°C and cooler evenings around 5.9°C.