Concord's winters are harsh, with temperatures often dropping below freezing and averaging around -2°C in January and -3°C in February. As spring arrives, temperatures gradually warm up, reaching averages of 8°C in April and 14°C in May. Summer brings mild warmth, with June and July averaging around 22°C, but the heat can be intense during hot spells. Autumn is a transitional season, with temperatures cooling down to averages of 13°C in October and 5°C in November before dipping again into winter. December's temperatures are slightly milder than February's, averaging just above freezing at 1°C.