Millcreek experiences a moderate climate with distinct seasonal variations. Winters are chilly, with temperatures often below freezing and averaging around -1°C in January and -4°C in February. As spring arrives, temperatures gradually rise, reaching average highs of 6°C in March and 9°C in April. Summer is mild, with July and August being the warmest months, averaging around 21-22°C, while autumn brings a return to cooler temperatures, with averages ranging from 4-15°C.