Laval's winters are brutally cold, with temperatures often plummeting below -29°C in January and February, averaging around -6°C to -7°C. Spring arrives slowly, with March still quite chilly but April bringing a noticeable warming trend, as daytime highs reach up to 24°C. Summer is mild, with June and July temperatures averaging around 21-22°C, while August can be warmer, with highs occasionally reaching 35°C. Autumn brings a return to cooler temperatures, with September and October averaging around 17-11°C, before the winter chill sets in once again in November and December.