Sundarnagar experiences a mild winter with temperatures ranging from 0-22°C, setting in around January and February, with average highs around 13°C. As spring arrives in March, temperatures rise gradually, reaching up to 32°C by April, with averages increasing steadily throughout the month. Summer months of May and June bring scorching heat, with temperatures soaring as high as 38°C, while July and August see a slight drop but still remain hot. Autumn brings relief from the sweltering summer, with temperatures dipping slightly in September before rising again in October. Winters return by November and December, with temperatures dropping back to around 0-22°C.