Baltimore's winters are cold and grey, with temperatures often hovering around freezing point, occasionally dipping below -9°C in February. Spring arrives slowly, with temperatures gradually warming up to a pleasant average of 13°C by April, but still experiencing chilly mornings. Summer is warm and humid, with July and August being the hottest months, averaging highs of 25-30°C, although occasional heatwaves can push temperatures above 35°C. Autumn brings mild days and cool nights, with temperatures dropping back down to around freezing point by November. Winters return with a vengeance in December, bringing chilly mornings and icy winds.