The Cossack outpost Mokroye was founded in the mid-18th century, between 1748 and 1762. It was named after the Mokra River, where plow soldiers were relocated from the Petrovsky district to protect the southern borders of the country from raids by the Nogais, Kyrgyz, and Kaysaks. By the mid-19th century, Mokroye had 113 households, a postal station on the route from Petrovsk to Saratov, and a church built through the efforts of the parishioners, which is why the village was also called Bogoroditskoye. A zemstvo school opened here. Before the abolition of serfdom, the village had the status of a state-owned settlement, and after the reform, it became part of the Novo-Zakharkinskaya volost of the Petrovsky district in the Saratov province. By the beginning of World War I, the population of Mokroye exceeded 1,100 people.

After the Civil War and the famine in the Volga region, the population of Mokroye significantly decreased. The local church was closed, and the chairman of the church council, D.M. Balandin, was arrested and sentenced for anti-Soviet agitation.

The church in honor of the Kazan Icon of the Mother of God in Mokroye was consecrated in 1818. Houses for the priest and the psalmist were built near the church, and neighboring villages such as Yaruga with a zemstvo school, Tarumovka with a church school, and Bergenovka were part of the parish. The modern stone building with a bell tower was likely erected on the site of the historical one during World War I. During the Soviet era, the church became abandoned, with the interior decoration and roof missing, only the exterior appearance remains.