Winters in Irvington are chilly, with temperatures often dropping below freezing and averaging around 2-6°C. Spring brings mild temperatures, gradually warming up to averages of 7-12°C by April. Summer months see a consistent warmth, with July and August being the warmest, averaging around 24-25°C, while September's temperature drops slightly to 22°C. Autumn is relatively cool, with November and December experiencing chilly temperatures, averaging around 8°C in November and 6°C in December. The seasonal temperature fluctuations are moderate overall, with no extreme heat or cold periods throughout the year.