Olathe experiences a continental climate with cold winters and warm summers. Winters, from December to February, are typically chilly, with temperatures often below freezing, especially in January and February. Spring arrives in March, bringing moderate temperatures that gradually warm up throughout the season, with April and May being pleasant months. Summer, from June to August, is warm to hot, with July and August being the hottest months. Autumn, from September to November, sees a return to cooler temperatures, with October being relatively mild before winter sets in again.