textproduct: Louisville

KEY MESSAGES

* Today, calm weather moves in with cooler than average temperatures through Saturday.

* Friday night into Saturday, rain chances return with average high temperatures, in the low 90s, returning on Sunday.

SHORT TERM /THROUGH TONIGHT/

Issued at 319 AM EDT Wed Jul 22 2026

Today, surface high pressure, centered over the upper Midwest, will continue getting pushed into the Lower Ohio Valley by northwest flow. This is driving CAA, bringing dry and cooler air. Dew points will continue falling until reaching the mid to upper 50s in southern Indiana to the upper 60s to low 70s in far southern Kentucky. This is as high only climb into the mid 70s (north) to low 80s (south). It's going to feel a lot better around here. Skies will remain mostly sunny with some expected cumulus after early morning low level stratus and patchy fog burn off after sunrise.

Tonight, with the same overall pattern, skies continue clearing into the night until becoming clear. Light northerly winds help lows fall into the mid 50s to low 60s.

LONG TERM /THURSDAY THROUGH TUESDAY/

Issued at 319 AM EDT Wed Jul 22 2026

Thursday and Friday, the same overall pattern continues. Upper ridging over the Western States and an upper trough over the Northeast will continue pushing the large surface high towards the Ohio Valley, keeping northeast winds across the CWA. This will limit highs to the upper 70s to mid 80s with dew points in the 50s and low 60s.

By Friday night, the center of the surface high will pass, just to our north. Return flow begins advecting precipitable water values approaching 2" ahead of a shortwave flowing along the ridge. This is expected to increase rain chances into the day on Saturday. The best chances of precipitation is expected across southern Kentucky, but should be fairly uneventful with nothing severe. Temperatures start to climb, into the mid 80s on Saturday and the low 90s from Sunday into the first part of next week.

Into next week, the overall pattern doesn't change. Additional chances for precipitation will be introduced as waves work towards the Lower Ohio Valley on northwest flow, but nothing looks concerning.

AVIATION /06Z TAFS THROUGH 12Z THURSDAY/

Issued at 153 AM EDT Wed Jul 22 2026

As surface high pressure begins to drop southeast towards the Lower Ohio Valley, skies will become more clear tonight as winds drop near calm. This is expected to lead to areas of fog in the east over LEX and RGA as temperatures fall to the dew point. A layer of low stratus is also expected to form near the same area. Believe this will impact RGA the most with LEX having lesser impacts.

LMK WATCHES/WARNINGS/ADVISORIES

KY...None. IN...None.