Winters in Caltanissetta are mild, with temperatures averaging around 9°C in January and December, often dipping below 0°C but rarely dropping below -3°C. As spring approaches, temperatures gradually rise, reaching an average of 13°C by April and 18°C by May, allowing for pleasant days with highs occasionally reaching up to 33°C and 34°C. Summers are warm, with July and August being the hottest months, averaging around 26-27°C, though temperatures can sometimes soar above 40°C. In autumn, the weather cools down, returning to milder conditions by October and November, averaging around 16°C and 13°C respectively. By December, winter's chill starts to set in again, bringing back average temperatures of around 8°C.