WEST LAFAYETTE — After an unusually cool and wet summer, Indiana might very well see a return to more normal conditions as autumn sets in.

Temperatures are expected to rebound to near-normal and then normal for the rest of September and develop into a warmer-than-normal trend for October, according to the Indiana State Climate Office, based at Purdue University. Precipitation should be about normal in October.

The relative warm-up would be the result of a “positive” Artic Oscillation that is expected to keep cooler air out of the region and a jet stream that is likely to shift more east to west than north to south.