In October, Rapid City typically sees daytime highs of 17.7°C and overnight lows around 1.9°C. Compared to the annual average high of 15.6°C, October runs +2.1°C.
October in Rapid City averages a daytime high of 17.7°C and an overnight low of 1.9°C.
October runs +2.1°C compared to Rapid City's annual average high of 15.6°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 17.7°C and cooler evenings around 1.9°C.