In April, Markham typically sees daytime highs of 11.2°C and overnight lows around 1.1°C. Compared to the annual average high of 11.6°C, April runs -0.4°C.
April in Markham averages a daytime high of 11.2°C and an overnight low of 1.1°C.
April runs -0.4°C compared to Markham's annual average high of 11.6°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 11.2°C and cooler evenings around 1.1°C.