Climate in Keystone: Temperature, Rainfall, Humidity & Sunshine

Global Climate Score

Keystone experiences a delightful continental climate characterized by warm, pleasant summers and crisp, snowy winters. Summer daytime temperatures are ideal for outdoor adventures, averaging comfortably in the mid-to-high twenties Celsius with low humidity levels. Autumn brings breathtaking foliage displays across the Black Hills, making it one of the most visually stunning times of the year. Winters provide an enchanting snowy landscape that appeals to winter sports enthusiasts and lovers of peaceful seasonal scenery. Abundant annual sunshine hours ensure that residents enjoy bright, uplifting weather throughout most calendar months.