Rivadavia is a town in eastern Salta Province, Argentina in the Department of Rivadavia, 87 kilometres (54 mi) from the city of Salta.

Rivadavia has a hot semi-arid climate (BSh) according to the Köppen climate classification, having too little rainfall for a humid subtropical climate.

Using the Trewartha climate classification the climate is semi-arid with very hot summers and mild winters, being classified as BShl, bordering on BSal.

Temperature extremes can be very high in the summer especially in early summer before the heaviest and most persistent rain.

The highest temperature ever recorded in South America was held by Rivadavia, when it peaked at 48.9 °C (120.0 °F) on December 11, 1905.