“Temperatures in the low to mid 30s will result in frost formation,” according to the Louisville NWS. “Frost could damage sensitive outdoor plants. Delicate outdoor plants can die if not covered.”

The change in temperature didn’t go unnoticed, as some people celebrated the fall weather and others pointed out the rapid change in the forecast.

Here’s what you need to know about the weather in Louisville:

Will it be freezing in Louisville tonight?

According to NOAA’s National Weather Service glossary, freezing temperatures are 32 degrees and below.