Evanston experiences a continental climate with distinct seasonal patterns. Winters are cold, with temperatures often below freezing and occasional drops as low as -23°C in February. As spring arrives, temperatures gradually warm up, reaching averages of around 9°C by April and continuing to rise through May and June, with the latter month's temperatures often soaring above 30°C. Summer months bring stable warmth, with July and August averaging highs near 24°C, while September marks a slight cooling trend. Autumn brings a return to cooler temperatures, with November's averages hovering around 5°C before winter sets in once more.