In March, Port Saint Mary typically sees daytime highs of 8.1°C and overnight lows around 4.0°C. Compared to the annual average high of 11.6°C, March runs -3.5°C.
March in Port Saint Mary averages a daytime high of 8.1°C and an overnight low of 4.0°C.
March runs -3.5°C compared to Port Saint Mary's annual average high of 11.6°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 8.1°C and cooler evenings around 4.0°C.