Killeen experiences a mild climate with temperatures gradually warming up as the year progresses. Winters are cool, with average temperatures ranging from 6-16°C, and occasional drops below 0°C in January and February. Spring arrives in March, bringing warmer temperatures averaging around 15-17°C, while summer months of June to August see high averages of 26-28°C, sometimes reaching up to 37°C. Autumn is similar to spring, with mild temperatures ranging from 14-21°C, before cooling down again in winter. Overall, temperature fluctuations are moderate throughout the year, with some variability between seasons.