textproduct: Louisville

KEY MESSAGES

* Patchy fog likely along and south of a Bowling Green, Ky to Richmond, KY line. Dense fog is possible in spots.

* Lows this morning and Monday mornings may approach record low temperatures for this time of year (40s).

* Beautiful weather today and Monday, with afternoon highs in the 70s.

* A very dry weather pattern is expected for next week with gradually warming temperatures.

SHORT TERM /THROUGH TONIGHT/

Issued at 346 AM EDT Sun Sep 7 2025

Early morning satellite imagery shows mostly clear skies across the region. A few mid-level clouds were moving through southern Indiana and far northern Kentucky. GOES night-time fog product is showing widespread valley fog across our southeast sections. Current temperatures across the region were in the upper 40s to the lower 50s.

While no significant weather is expected through dawn, locally dense fog will be possible in areas along and southeast of a line from roughly Bowling Green to Winchester. The fog will be most dense in the river valleys, low-lying areas, and over bodies of water. A Dense Fog Advisory will be forthcoming with the forecast across our southeastern sections. Overnight lows will be in the upper 40s/lower 50s. Lexington still looks to tie or possibly break their record low of 47 this morning.

For today, we'll see the valley fog mix out after sunrise. High pressure across the Midwest will continue to build into the region. Rather tranquil, if not down right beautiful weather is expected across the region today. Afternoon highs will be in the low-mid 70s across southern IN and northern KY, with mid-upper 70s across south- central KY.

For tonight, mostly clear skies are expected once again. With high pressure moving over the area, winds are expected to become very light setting the stage for good radiational cooling. Lows tonight will be in the low-mid 40s in the rural areas, with upper 40s/near 50 in the urban areas. Still believe that our typical cold spots that have good radiational cooling could touch the upper 30s. The most likely spots would be the KY Mesonet stations in Hancock/Meade/Harrison counties.

LONG TERM /MONDAY THROUGH SATURDAY/

Issued at 346 AM EDT Sun Sep 7 2025

In the long term, the forecast thinking remains generally unchanged. The upper level pattern across the CONUS is forecast to remain rather blocky with a ridge across the Plains and troughs on the west and east coasts. The pattern looks hold through much of the week, though the mid-level ridge over the Plains may start to build eastward by the mid-late week time frame.

In terms of sensible weather, mostly sunny days and mostly clear nights are expected through the period with no precipitation expected. Highs on Monday will warm into the upper 70s with overnight lows in the upper 40s to the lower 50s. Temperatures on Tuesday will warm into the lower 80s with highs Wednesday through Friday averaging in the mid-upper 80s. Overnight lows through the period will be in the upper 50s to the lower 60s.

AVIATION /06Z TAFS THROUGH 12Z MONDAY/

Issued at 124 AM EDT Sun Sep 7 2025

Satellite imagery shows clear skies across the region with night- time fog imagery showing valley fog over the Bluegrass region of central Kentucky. Best chance of fog overnight will be at BWG and LEX. Fog will mix out after sunrise and steady northwest winds will kick up in the mid-late morning hours and continue through the afternoon hours. Could see some gusts in the 15-20 mph range during the afternoon before winds settle down by sunset. The outlook for tonight and Monday calls for VFR conditions.

CLIMATE

Issued at 346 AM EDT Sun Sep 7 2025

Record Low Temperatures Possible...

Sun, Sept 7th Mon, Sept 8th Tues, Sept 9th Rec (Yr) | FCST Rec (Yr) | FCST Rec (Yr) | FCST SDF 46 (1988) | 53 46 (1956) | 50 44 (1883) | 53 LEX 47 (2017) | 47 45 (1956) | 45 45 (2024) | 48

BWG 43 (1988) | 50 47 (1956) | 49 44 (1958) | 52

FFT 43 (1988) | 46 42 (1988) | 45 43 (2024) | 47

LMK WATCHES/WARNINGS/ADVISORIES

KY...Dense Fog Advisory until 9 AM EDT /8 AM CDT/ this morning for KYZ048-049-054>057-064>067-073>078-081-082. IN...None.