Winters in Plainfield are chilly, with temperatures often below freezing, ranging from -9°C to 12°C, averaging around 2°C. As the season progresses, temperatures gradually rise towards spring, with March marking a significant warming trend, with temperatures fluctuating between -6°C and 28°C, averaging 7°C. Spring is mild, with April and May experiencing warm temperatures, reaching up to 31°C and 34°C respectively, averaging around 12°C and 17°C. Summers are relatively cool, with July and August temperatures ranging from 14°C to 35°C, averaging 25°C, while September sees a slight drop in temperature, fluctuating between 11°C and 32°C, averaging 22°C. Autumn is similar to spring, with October and November experiencing mild temperatures, before dropping again into winter's chill.