Chilliwack experiences a moderate climate with distinct seasonal patterns. Winters are chilly, with temperatures often below freezing, particularly in January and December when lows can drop as low as -16°C and averages around 0°C. Spring brings mild warming, with March and April temperatures rising to an average of 6°C and 11°C respectively, allowing for some sunshine and blooming flowers. Summers are warm and sunny, with June to August temperatures averaging above 19°C, reaching highs of up to 40°C in June and 38°C in August. Autumn is cool and wet, with September to November temperatures gradually dropping back down, but still experiencing occasional warmer days.