Winters in Zvornik are cold and variable, with temperatures fluctuating between freezing point and mild days. The coldest months, January and December, see average temperatures around 4°C, while February is slightly warmer at 6°C. Spring arrives in April, bringing temperatures that rise to an average of 10°C, and the summer months from June to August are warm to hot, with July being the hottest with an average temperature of 25°C. Autumn is mild, with September's average temperature of 18°C giving way to cooler November at 7°C, before winter returns in December.