In April, St. Louis typically sees daytime highs of 19.8°C and overnight lows around 7.5°C. Compared to the annual average high of 19.0°C, April runs +0.8°C.
April in St. Louis averages a daytime high of 19.8°C and an overnight low of 7.5°C.
April runs +0.8°C compared to St. Louis's annual average high of 19.0°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 19.8°C and cooler evenings around 7.5°C.