In April, Arlington Heights typically sees daytime highs of 14.1°C and overnight lows around 3.4°C. Compared to the annual average high of 14.3°C, April runs -0.1°C.
April in Arlington Heights averages a daytime high of 14.1°C and an overnight low of 3.4°C.
April runs -0.1°C compared to Arlington Heights's annual average high of 14.3°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 14.1°C and cooler evenings around 3.4°C.