Welkom's climate is characterized by mild winters and hot summers, with a slight decline in temperatures during the latter part of winter. Spring brings gradual warming, but temperatures remain relatively cool, ranging from 5-30°C in April. Summer months are warm to hot, with temperatures frequently reaching above 30°C, especially in November and December. Autumn is similar to spring, with mild temperatures and a slow decline into cooler winter conditions. The coldest month on average is July, with lows around -6°C and highs around 24°C, while the hottest month is usually October or November, depending on the year's temperature fluctuations.