Monday, May 4
NWS Alerts Active This Day
Lake Wind Advisory
Lake Wind Advisory issued May 4 at 1:15PM CDT until May 4 at 8:00PM CDT by NWS Paducah KY
WHAT Southwest winds 10 to 20 mph with gusts up to 30 mph.
WHERE Portions of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri.
WHEN Until 8 PM CDT /9 PM EDT/ this evening.
IMPACTS Strong winds and rough waves on area lakes will create hazardous conditions for small craft.
Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.
How Did We Do?
Comparing our AI forecast to actual observations from Monday, May 4, 2026.
Regional Assessments
Purchase Area
Northwest Pennyrile
Southwest Pennyrile
Barren River
Louisville Metro
Lincoln Trail
Lake Cumberland
Northern Kentucky
Inner Bluegrass
Bluegrass Foothills
Northeast Kentucky
Southeast Kentucky
Breezy Morning Showers Giving Way to Warm Afternoon Sun
A weak and moisture-starved shortwave trough will traverse the Commonwealth early Monday, bringing a period of light stratiform rain and drizzle primarily to central and eastern Kentucky. Western Kentucky will remain dry, enjoying sunny skies and unseasonably warm temperatures. As the system exits by midday, rapid clearing will occur from west to east, followed by gusty southwesterly winds and highs reaching the upper 70s to low 80s.
Confidence Assessment
High confidence in p-type (all rain) and the overall warming trend. Points subtracted for minor timing differences in the clearing line and slight intensity discrepancies in rainfall totals.
Get Personalized Forecasts
Choose which region in Kentucky you're interested in and we'll always show you that one first. You can change your selected region by clicking the "Star" icon on any regional forecast.
Purchase Area
Expect a bright and very warm day across the Purchase area. While the rest of the state deals with morning clouds, you will see plenty of sun from the start. It will be quite windy this afternoon with gusts reaching 40 mph, so secure any loose outdoor furniture.
Northwest Pennyrile
A few light sprinkles are possible before 9 AM, but the clouds will break quickly to reveal a beautiful, warm afternoon. Highs will reach the upper 70s under breezy conditions.
Southwest Pennyrile
A very warm day is in store with lots of sunshine and temperatures nearing 80 degrees. Southwest winds will be gusty at times, especially during the mid-afternoon hours.
Barren River
Expect a dry day with fading morning clouds. Temperatures will be very comfortable, peaking in the upper 70s. Winds will increase by afternoon with some gusts over 30 mph.
Louisville Metro
Keep the umbrella handy for the morning drive as light rain moves through the city. Roads will likely be damp through 10 AM. The sun returns by lunch, leading to a very warm and breezy afternoon with highs in the mid-70s.
Lincoln Trail
Expect a damp start to Monday with light showers mainly during the morning hours. The afternoon will be dry and pleasant, though winds will gust up to 35 mph at times.
Lake Cumberland
A stray morning shower is possible, but most will stay dry. Clouds will break up early, allowing for a warm and sunny afternoon.
Northern Kentucky
It will be a soggy start with light rain likely through midday. Rainfall amounts around 0.2 inches are expected. Skies will gradually clear by late afternoon, with highs reaching the low 70s.
Inner Bluegrass
Expect periods of light rain on and off through the morning commute. The rain should end by early afternoon. It will turn windy as skies clear, with gusts near 35 mph.
Bluegrass Foothills
A damp morning with light rain will give way to a brighter afternoon. Temperatures will reach the mid-70s.
Northeast Kentucky
Expect a gray and damp start to the day. Light rain will persist through the early afternoon before clearing begins late in the day.
Southeast Kentucky
Rain will move through the mountains early in the morning. By afternoon, the sun will return and temperatures will be pleasant.
Possible Outcomes
Weather forecasting involves uncertainty. Below are two scenarios representing the range of possible outcomes: the "Boom" scenario shows the worst-case/highest-impact result if conditions align unfavorably, while the "Bust" scenario shows the best-case/lowest-impact result if the forecast doesn't materialize as expected.
The 'Boom' Scenario
If the moisture axis slightly overperforms and the NAM's more aggressive moisture flux verifies, rainfall totals could reach 0.50 inches in the Northern Kentucky and Louisville corridors, with cloud cover lingering into the early evening for the Eastern Coalfields.
The 'Bust' Scenario
If the dry air entrainment at the mid-levels is more aggressive (as seen in ECMWF solutions), precipitation may struggle to reach the ground as anything more than scattered sprinkles (virga), and Western Kentucky could see highs over-perform into the mid-80s.
Model Disagreements
When models disagree, a call must be made to determine the most likely outcome. This decision is based on a combination of factors including model performance, historical data, and the models general accounting of each climatic region of Kentucky.
The Moisture Magnitude Matchup
A significant disagreement exists between the NAM and the global models (GFS/Euro/GEM) regarding rainfall intensity. The NAM suggests a more robust moisture plume (PWATs > 1.1") capable of producing 0.30-0.50" of rain, while the global models suggest a much drier solution with totals under 0.15".
Why BLEND Wins
The NAM likely suffers from its known 'bullseye' bias in weak forcing regimes, while the Euro/GFS may be too aggressive with the dry slot. A blend favors a nuisance-level rainfall (0.10-0.20") which respects the limited PWAT environment.
Eastern Kentucky Clearing Speed
Models vary on how quickly the low-level cloud deck erodes in the Northeast and Southeast. The NAM and GEM hold onto moisture longer due to terrain-induced trapping, while the GFS/Euro show a faster exit.
Why GEM Wins
GEM handles the low-level moisture and terrain interactions in the Appalachians with more consistency, suggesting a slower clearing for the easternmost valleys.
Celestial Almanac
Waning Gibbous
Purchase Area
Northwest Pennyrile
Southwest Pennyrile
Barren River
Louisville Metro
Lincoln Trail
Lake Cumberland
Northern Kentucky
Inner Bluegrass
Bluegrass Foothills
Northeast Kentucky
Southeast Kentucky
Dive Deeper Into the Models
This forecast is a synthesis of raw data from the NAM, GFS, ECMWF, and GEM models. These models provide detailed atmospheric analyses including 500mb vorticity, precipitation rates, and more. You can take a look at the raw model data by clicking the links below.