Cooler Weather and Dry Skies Expected Across Indiana Late August

By Andi Anderson

Indiana is bracing for a notable weather shift as August comes to a close. According to the National Weather Service’s Climate Prediction Center, there is nearly a 100% chance of sustained below-normal temperatures between August 26 and 30.

For many areas, this means nighttime lows could dip into the upper 40s, particularly in northern Indiana cities such as Fort Wayne, Lafayette, South Bend, and Valparaiso. The last time Lafayette and South Bend saw nighttime temperatures below 50°F was back in early June.

This cool-down is welcome news after a summer marked by persistent humidity. The Lafayette area recorded its second-highest number of days with dew points above 70°F, levels considered very humid.

Dew points above 75°F, which occurred several times this summer, signal oppressive conditions. By the end of the month, dew points are expected to fall to much more comfortable levels, though models still suggest the possibility of another warm surge around Labor Day weekend.

While temperatures and humidity fluctuate, the outlook for precipitation is less favorable for those in agriculture. The 6–10-day forecast suggests below-normal rainfall is highly likely, continuing a seasonal trend of drier conditions in late August and September.

Sunshine will dominate, but the lack of rain could challenge soil moisture levels, something farmers will want to watch closely as crops head into the late stages of the growing season.

Overall, Indiana’s weather pattern is acting much like the fluid system scientists describe—shifting between highs and lows, warmth and coolness, dryness and humidity.

As these transitions continue, residents can look forward to cooler evenings and less oppressive air, while farmers may need to prepare for drier soils as harvest season approaches.

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