In March, San Mateo typically sees daytime highs of 30.8°C and overnight lows around 17.8°C. Compared to the annual average high of 29.6°C, March runs +1.2°C.
March in San Mateo averages a daytime high of 30.8°C and an overnight low of 17.8°C.
March runs +1.2°C compared to San Mateo's annual average high of 29.6°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 30.8°C and cooler evenings around 17.8°C.