In April, Waterloo typically sees daytime highs of 15.4°C and overnight lows around 2.6°C. Compared to the annual average high of 14.4°C, April runs +1.0°C.
April in Waterloo averages a daytime high of 15.4°C and an overnight low of 2.6°C.
April runs +1.0°C compared to Waterloo's annual average high of 14.4°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 15.4°C and cooler evenings around 2.6°C.