Portage experiences a continental climate with cold winters and warm summers. January is the coldest month, with temperatures often dropping below freezing and averaging around -6°C in February, which sees occasional extremely low temperatures down to -25°C. Spring arrives in March, bringing moderate temperatures ranging from -9°C to 22°C, while April and May see a gradual warming trend, with temperatures increasing to an average of 14°C by May. Summer months of June, July, and August are warm, with highs around 32°C and lows near 11°C, but September brings a return to cooler temperatures. Autumn is generally mild, with October and November temperatures similar to those in April and May, before cooling off again in December, which averages just above freezing.