A cold cloudy day followed by clearing skies overnight is the perfect set up for frost / freeze conditions around the viewing area tonight. The clouds kept temperatures in the middle 40s through the day which means we can fall quite low without a cloud blanket on the atmosphere tonight.

The Omaha metro can expect areas of frost with temperatures falling into the upper 30s. Even though temperatures are indeed above freezing they can cool off an additional 2-3 degrees within inches of the ground because of clear skies. This is why frost is a concern.

Areas west of Omaha could see freeze conditions. Skies already clear will allow for the most time for cooling to occur. Lows in the lower 30s could also be a few degrees colder at the surface, in some cases maybe even nearing the 30 degree mark. This will cause damaging freeze to sensitive plants.

This is not unusual at all for October. Omaha's average first frost is October 4th and average first freeze October 12th.