Situated in the heart of Tornado Alley, Tulsa is characterised by a temperate, sometimes subtropical, climate with four distinct seasons. Winters (December to February) are cold, with temperatures occasionally dipping below 26°F (-3°C) and an annual snowfall average of around nine inches (23cm).In the spring and early summer, there are thunderstorms, hailstorms, strong winds, and occasionally tornados, with plenty of rainfall expected. During the summer months, average highs reach up to 93°F (34°C), with average highs at the beginning and end of summer around 88°F (31°C) and high humidity brought by southerly winds.