textproduct: Paducah

KEY MESSAGES

- Widespread frost is expected tonight as temperatures drop into the lower to middle 30s. Portions of southeast Missouri and southern Illinois may briefly reach the freezing mark.

- A warming trend will begin on Sunday, with high temperatures climbing a few degrees above normal for Wednesday through Friday. No rain and few clouds are expected.

DISCUSSION

Issued at 107 PM CDT Sat Oct 17 2026

Northeast winds have gusted to around 15kts over the southeast half of the region already today, but they will diminish through the afternoon and become light tonight. Guidance indicates that a light breeze may persist over at least the eastern half of the region tonight, which could limit radiational cooling to some extent. However, over the Ozark Foothills and our typically cool locations in southern Illinois, where winds will likely be calm, temperatures will drop down near the freezing mark for an hour or two. Still feel that frost will be the primary impact over most of the region, so will not make any changes to the headline. However, will delay its beginning til 1 AM CDT to better match the onset of frost development.

Dry surface high pressure will be the rule through the remainder of the forecast. High pressure aloft will build overhead through Tuesday and then remain in place into next weekend. The result will be the ideal fall weather most of us really look forward to and have been waiting not so patiently for. Highs will climb back to normal in the lower 70s by Monday and then climb into the middle and upper 70s for Wednesday through next Saturday. A few readings of 80 or greater will be possible, especially over southeast Missouri. Low temperatures will remain chilly in the mid to upper 30s Sunday night/early Monday morning and some frost cannot be ruled out in a few locations. Then lows will trend upward through the 40s through the work week.

AVIATION /18Z TAFS THROUGH 18Z SUNDAY/

Issued at 1146 AM CDT Sat Oct 17 2026

The TAFs are VFR. A few cu have developed and will continue over much of the region this afternoon. Northeast winds this afternoon will be sustained near 10kts with occasional gusts 15-18kts at most sites.

PAH WATCHES/WARNINGS/ADVISORIES

IL...Frost Advisory from 9 PM this evening to 8 AM CDT Sunday for ILZ075>078-080>094. MO...Frost Advisory from 9 PM this evening to 8 AM CDT Sunday for MOZ076-086-087-100-107>112-114. IN...Frost Advisory from 9 PM CDT /10 PM EDT/ this evening to 8 AM CDT /9 AM EDT/ Sunday for INZ081-082-085>088. KY...Frost Advisory from 9 PM this evening to 8 AM CDT Sunday for KYZ001>022.