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Persistent Midweek Soaking Fractures Into a Divided Weekend
What You Need to Know
Widespread rain dominates through Wednesday, followed by a sharp weekend divide where Western Kentucky stays wet while Northern and Eastern Kentucky enjoy dry, pleasant sunshine.
We are continuing to track the persistently damp pattern outlined in our previous updates, with widespread waves of moderate rain locking in across the Commonwealth for Tuesday and Wednesday. It will feel noticeably muggy and heavy outside, with temperatures hovering in the 70s despite the persistent cloud cover.
By Thursday, the promised light at the end of the tunnel briefly materializes for most of the state. Morning showers will gradually taper off, allowing the afternoon to warm beautifully into the 80s as skies finally begin to brighten from west to east.
However, as cautioned earlier, the late-week forecast sets up a stark geographic divide. A stalled moisture boundary will keep clouds and light rain anchored over Western and Southern Kentucky from Friday through Saturday, while Northern and Eastern Kentucky cash in on brilliant sunshine and pleasant springtime conditions.
Key Dates
Primary Impacts
7 Day Outlook
Triple-Digit Heat Grips Kentucky; Isolated Showers East
An intense late-summer heatwave will peak today as a 594dm ridge centers over the region, pushing temperatures into the upper 90s and triple digits. While western Kentucky remains dry and sunny, a weak disturbance on the ridge's periphery will trigger isolated, light rain showers and virga across the Bluegrass and Northeast regions.
Regions
Confidence Assessment
High agreement on the overall ridge strength and heat magnitude. Slight uncertainty remains regarding the exact westward extent of the evening rain showers and the influence of cloud debris on peak temperatures.
View Full Forecast BreakdownExtreme Late-Summer Heatwave Grips the Commonwealth
An intense heatwave will peak across Kentucky this Friday as a powerful ridge of high pressure centers itself over the region. Expect temperatures to approach record-breaking levels in the mid-to-upper 90s, with several locations potentially reaching the 100-degree mark. While a stray sprinkle is possible in the east, most of the state will remain bone-dry and sweltering.
Regions
Confidence Assessment
High confidence in significant heat and the absence of organized storms. Lower confidence in whether the high-based moisture will result in scattered sprinkles or if the 'cap' will keep conditions entirely dry.
View Full Forecast BreakdownExtreme Heat Peaks Followed by Scattered Evening Storms
A potent late-summer heatwave will culminate today with triple-digit temperatures in the west before a shortwave trough triggers scattered thunderstorms and heavy rain in the east this evening.
Regions
Confidence Assessment
Confidence is high that today will be the hottest day of the week, but low regarding the exact arrival time of rain and whether it will manifest as intense storms or light showers.
View Full Forecast BreakdownMorning Sprinkles Give Way to Late-Season Heat Surge
A weak, moisture-starved weather system will cross the state overnight, bringing light rain or drizzle. Skies will clear rapidly Sunday morning as a powerful thermal ridge builds from the southwest, triggering a significant jump in temperatures, with the western half of Kentucky approaching or exceeding 90 degrees.
Regions
Confidence Assessment
Confidence is high for a dry afternoon, but significant model disagreement regarding the magnitude of the heat surge and the efficiency of overnight precipitation reduces the overall score.
View Full Forecast BreakdownLate Summer Sunshine with Localized Mountain Drizzle
A strong ridge of high pressure will dominate the Commonwealth, bringing widespread sunshine and late-summer warmth. The only exception will be the Southeast Coalfields, where shallow moisture may lead to early-day drizzle before clearing.
Regions
Confidence Assessment
Confidence is high for a dry and warm day for 90% of the state due to strong model agreement on the ridge position. The lower score reflects the 5-day lead time and the typical uncertainty regarding terrain-induced clouds in the eastern mountains.
View Full Forecast BreakdownWarm Tuesday with Nuisance Drizzle for Southern Kentucky
A split pattern will define Tuesday across the Commonwealth. Northern and western regions will remain dry but humid under varying cloud cover, while a shallow moisture plume will bring persistent light drizzle and mist to southern and eastern Kentucky. No severe weather or significant rainfall is expected.
Regions
Confidence Assessment
Confidence is high regarding the thermal profile and lack of severe weather. However, the 6-day lead time and the sensitivity of drizzle to boundary-layer moisture depth introduce moderate uncertainty in exact timing and coverage.
View Full Forecast BreakdownLate Summer Heat West, Nuisance Drizzle East
A sharp divide will define Kentucky's weather on September 9th. Western and Central regions will experience unseasonably hot and humid conditions under a stagnant ridge, while Eastern Kentucky deals with persistent cloud cover and light, non-impactful drizzle as a weak shortwave brushes the region.
Regions
Confidence Assessment
High confidence exists for the heat in the west. Confidence is lower for eastern precipitation reaching the ground due to significant dry air in the lower 3,000 feet of the atmosphere.
View Full Forecast Breakdown