Rapid City experiences a continental climate with significant seasonal variations in temperature. Winters are harsh, with extremely cold temperatures, ranging from as low as -30°C in February to moderate highs of around 16°C. Spring brings gradual warming, with March and April temperatures rising to averages above 0°C, while May marks the beginning of warmer days. Summer is warm to hot, with July often reaching highs near 42°C, but cooler nights provide some relief. Autumn sees a return to cooler temperatures, with September's average high temperature already dipping below 20°C.