Oldham's winters are typically chilly and variable, with temperatures often dropping below freezing in January and February, but rising to mild highs by March. Spring brings gradual warming, with April and May experiencing average highs around 18-20°C, while summer months of June and July can see temperatures soar above 27°C. Autumn is generally cool and unpredictable, with October and November temperatures fluctuating between single-digit lows and mid-teens highs, before dropping again in December's mild but unstable weather.