In March, Milwaukee typically sees daytime highs of 4.2°C and overnight lows around -3.9°C. Compared to the annual average high of 12.6°C, March runs -8.5°C.
March in Milwaukee averages a daytime high of 4.2°C and an overnight low of -3.9°C.
March runs -8.5°C compared to Milwaukee's annual average high of 12.6°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 4.2°C and cooler evenings around -3.9°C.