textproduct: Paducah

KEY MESSAGES

- The Heat Advisory remains in effect until early this evening, with high temperatures again reaching the middle to upper 90s this afternoon.

- A cold front will move through our region late today and tonight, allowing much cooler air to gradually filter into our region for the beginning of the work week.

- Temperatures by Tuesday into Tuesday night will be near to a little below seasonal normals, with these conditions persisting the rest of the week and into next weekend.

- 30-60% chances of showers and thunderstorms will spread into portions of southern Illinois, southwest Indiana and southeast Missouri late tonight, and across the rest of the area by Monday afternoon, with 20-30% chances tapering off west to east Monday night.

UPDATE

Issued at 632 AM CDT Sun Sep 20 2026

Updated aviation section for 12z TAF issuance.

DISCUSSION

Issued at 1242 AM CDT Sun Sep 20 2026

One more day of high temperatures 15 to 20 degrees above normal can be expected today with highs in the middle to upper 90s. A cold front will push through the PAH forecast area late today and tonight, finally ending the prolonged heat wave. Temperatures tonight and Monday will still be 5 to 15 degrees above normal, but much cooler air will really filter in by Monday night into Tuesday. Readings Tuesday through the end of the week and even into next weekend will be near to a little below normal, with highs generally in the middle 70s to around 80 degrees, and lows in the middle 50s to near 60 degrees.

With the cold front will come chances of showers and some thunderstorms. The latest model blend has trended downward a little with the overall rain chances and rainfall amounts, which are now from a few hundredths to near a quarter of an inch. Scattered showers and a few thunderstorms (30-60% chances) will spread into southern Illinois, southwest Indiana and much of southeast Missouri Sunday night. Monday morning may be fairly quiet, but chances crank back up to 30-50% across our entire region Monday afternoon with the heat of the day. 20-30% chances will taper off from west to east Monday night, with thunder potential ending by late evening. Beyond Monday night, dry conditions are expected through Saturday.

AVIATION /12Z TAFS THROUGH 12Z MONDAY/

Issued at 632 AM CDT Sun Sep 20 2026

SCT-BKN mid and high clouds expected through the TAF period at all TAF sites. At KMVN, included VCSH after 06z, with a PROB30 of -TSRA with MVFR conditions from 06z-12z. Light to calm winds will become W/SW around 6kts after 15z.

PAH WATCHES/WARNINGS/ADVISORIES

IL...Heat Advisory until 7 PM CDT this evening for ILZ075>078- 080>094. MO...Heat Advisory until 7 PM CDT this evening for MOZ076-086-087- 100-107>112-114. IN...Heat Advisory until 7 PM CDT /8 PM EDT/ this evening for INZ081-082-085>088. KY...Heat Advisory until 7 PM CDT this evening for KYZ001>022.