In March, San Mateo typically sees daytime highs of 15.5°C and overnight lows around 7.0°C. Compared to the annual average high of 17.7°C, March runs -2.1°C.
March in San Mateo averages a daytime high of 15.5°C and an overnight low of 7.0°C.
March runs -2.1°C compared to San Mateo's annual average high of 17.7°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 15.5°C and cooler evenings around 7.0°C.