Western Arkansas, just south of the Ouachita Mountains is where Fort Smith lies. It’s an interesting place to forecast for at any time of year, but particularly with the holidays on the way.

At 953PM, CT, Fort Smith was reporting a temperature of 57 degrees with clear skies. Temperatures were dropping precipitously in Oklahoma and Arkansas, but Fort Smith found itself to be the cool spot of the region, even among the more recently reporting spots. The jet has shifted to the middle of the country, a sure indicator of the looming winter season, and an opening for the threat of particularly chilly air in Fort Smith. Surface low pressure is analyzed south of the Quad Cities, and a cold front is stretched through Kansas, poised to drop through Arkansas tomorrow.
The cold front may touch off a few showers in and around Fort Smith about midday tomorrow, setting the stage for a breezy and cool afternoon. Tuesday will be cool, but dry as a weak ridge sets up, anticipating a busy holiday travel week.
Tomorrow – Drizzle around midday, cloudy and getting cooler, High 60, Low 40
Tuesday – Mostly sunny, High 58, Low 34

TWC: Tomorrow – Cloudy early with partial sunshine expected late. Slight chance of a rain shower.  High 59, Low 43
Tuesday – Mostly sunny skies. High 59, Low 34

AW: Tomorrow – Cloudy most of the time, breezy and cooler High 61, Low 43
Tuesday – Partly sunny High 57, Low 34

NWS: Tomorrow – Mostly cloudy, then gradually becoming sunny, High 61, Low 44
Tuesday – Mostly sunny, High 58, Low 36

WB: Tomorrow – Mostly sunny, high 59, Low 42
Tuesday – Sunny, High 57, Low 37

WN: Tomorrow – Partly cloudy, High 61, Low 43
Tuesday – Mostly Sunny, High 58, Low 36

CLI: Tomorrow – Mostly cloudy, High 67, Low 41
Tuesday – Mostly cloudy, High 59, Low 35

As you may have established, the low on Monday will come at midnight, leading into Tuesday. The cold front is not active, but you should still be able to find it on the satellite imagery.