In January, Port Saint Mary typically sees daytime highs of 7.2°C and overnight lows around 3.7°C. Compared to the annual average high of 11.6°C, January runs -4.4°C.
January in Port Saint Mary averages a daytime high of 7.2°C and an overnight low of 3.7°C.
January runs -4.4°C compared to Port Saint Mary's annual average high of 11.6°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 7.2°C and cooler evenings around 3.7°C.