kywx
Kentucky AI Weather Engine

Kentucky AI Forecasting Beta

Fri, Jan 2
Sun, Jan 4
Forecast For

Saturday, January 3

Updated Jan 2, 4:36 PM EST
Confidence
90%

How Did We Do?

Comparing our AI forecast to actual observations from Saturday, January 3, 2026.

Temperature
±2.6°F
Average Error
Precipitation
±0.00"
Average Error
Wind Speed
±2.3mph
Average error

Regional Assessments

Purchase Area

Paducah, Murray, Mayfield
Temperature
Forecast
42° / 32°
Actual
44° / 26°
Error: -2°F high, 6°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
7 / 17 mph
Actual
5 / 17 mph
Mesonet Stations HCKM, BAND

Northwest Pennyrile

Owensboro, Henderson, Morganfield
Temperature
Forecast
40° / 30°
Actual
42° / 24°
Error: -2°F high, 6°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
8 / 17 mph
Actual
5 / 17 mph
Mesonet Stations FRNY, RPTN, GRHM, DIXO

Southwest Pennyrile

Hopkinsville, Madisonville, Princeton
Temperature
Forecast
44° / 31°
Actual
44° / 27°
Error: 0°F high, 4°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
8 / 18 mph
Actual
6 / 19 mph
Mesonet Stations PRNC, PGHL, ERLN, CADZ, CCTY

Barren River

Bowling Green, Glasgow, Franklin
Temperature
Forecast
45° / 32°
Actual
48° / 27°
Error: -3°F high, 5°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
7 / 16 mph
Actual
5 / 16 mph
Mesonet Stations FARM, WDBY, EWPK

Louisville Metro

Louisville, La Grange, Shepherdsville
Temperature
Forecast
38° / 29°
Actual
37° / 27°
Error: 1°F high, 2°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
7 / 16 mph
Actual
6 / 17 mph
Mesonet Stations LGRN

Lincoln Trail

Elizabethtown, Bardstown, Leitchfield
Temperature
Forecast
40° / 29°
Actual
43° / 21°
Error: -3°F high, 8°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
9 / 20 mph
Actual
5 / 14 mph
Mesonet Stations CRMT, BLRK, CCLA, BRND, HARD

Lake Cumberland

Somerset, Columbia, Monticello
Temperature
Forecast
45° / 31°
Actual
51° / 26°
Error: -6°F high, 5°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
7 / 15 mph
Actual
4 / 14 mph
Mesonet Stations PCWN, CMBA, GRDR, WOOD, GRBG

Northern Kentucky

Covington, Florence, Independence
Temperature
Forecast
34° / 26°
Actual
33° / 25°
Error: 1°F high, 1°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
6 / 14 mph
Actual
4 / 13 mph
Mesonet Stations HHTS, HUEY

Inner Bluegrass

Lexington, Georgetown, Winchester
Temperature
Forecast
37° / 27°
Actual
38° / 24°
Error: -1°F high, 3°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
9 / 18 mph
Actual
7 / 17 mph
Mesonet Stations LXGN, SPIN

Bluegrass Foothills

Richmond, Danville, Berea
Temperature
Forecast
39° / 29°
Actual
41° / 25°
Error: -2°F high, 4°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
7 / 17 mph
Actual
5 / 12 mph
Mesonet Stations LGNT

Northeast Kentucky

Ashland, Morehead, Grayson
Temperature
Forecast
36° / 26°
Actual
39° / 21°
Error: -3°F high, 5°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
6 / 12 mph
Actual
3 / 15 mph
Mesonet Stations MRHD, CHTR

Southeast Kentucky

Hazard, Pikeville, Harlan
Temperature
Forecast
42° / 30°
Actual
49° / 25°
Error: -7°F high, 5°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
5 / 12 mph
Actual
3 / 14 mph
Mesonet Stations BMBL, QKSD, BNVL, VEST, RFVC, RFSM, PBDY

Cold and Quiet Post-Frontal Saturday Across Kentucky

High pressure building in from the west will usher in a dry but chilly continental airmass. Morning cloud cover, especially in Northern and Eastern Kentucky, will gradually erode throughout the afternoon, leading to a clear and cold night. No precipitation is expected despite a passing moisture-starved shortwave.

Why is this happening?
Technical explanation of the atmospheric setup
Confidence Assessment

High agreement across all major models on a completely dry forecast and the overall synoptic progression. Minor uncertainty is limited to the exact timing of cloud clearing in the east.

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

Paducah, Murray, Mayfield
Clearing Skies and Chilly
Sunny
42°/ 32°

Northwest Pennyrile

Owensboro, Henderson, Morganfield
Brisk and Bright Afternoon
Sunny
40°/ 30°

Southwest Pennyrile

Hopkinsville, Madisonville, Princeton
Sunniest Spot in the State
Sunny
44°/ 31°

Barren River

Bowling Green, Glasgow, Franklin
Pleasant and Sunny Winter Day
Sunny
45°/ 32°

Louisville Metro

Louisville, La Grange, Shepherdsville
Gray Morning, Late Day Sun
Cloudy
38°/ 29°

Lincoln Trail

Elizabethtown, Bardstown, Leitchfield
Chilly and Breezy Morning
Cloudy
40°/ 29°

Lake Cumberland

Somerset, Columbia, Monticello
Mild Afternoon Conditions
Sunny
45°/ 31°

Northern Kentucky

Covington, Florence, Independence
Stuck in the Deep Freeze
Cloudy
34°/ 26°

Inner Bluegrass

Lexington, Georgetown, Winchester
Overcast and Chilly for Lexington
Cloudy
37°/ 27°

Bluegrass Foothills

Richmond, Danville, Berea
Cold and Quiet Conditions
Cloudy
39°/ 29°

Northeast Kentucky

Ashland, Morehead, Grayson
Cold Air Trapped in the Valleys
Cloudy
36°/ 26°

Southeast Kentucky

Hazard, Pikeville, Harlan
Cloudy Peaks and Dry Air
Cloudy
42°/ 30°

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 subsidence inversion breaks earlier and high pressure centers more quickly, afternoon solar insulation could push temperatures 3-5 degrees above current consensus, especially in the southern river basins.

💨

The 'Bust' Scenario

Stubborn low-level stratus trapped beneath the inversion remains locked over the Bluegrass and Eastern Coalfields until after sunset, preventing any meaningful diurnal recovery and keeping highs near freezing in the north.

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.

Northern Tier Thermal Floor

The Euro and NAM are several degrees colder with high temperatures along the Ohio River compared to the warmer GFS output.

EURO
VS
NAM
VS
GFS
Why EURO Wins

The Euro and NAM better account for the strength of the cold air advection (CAA) following the shortwave passage, whereas the GFS has a known warm bias in these shallow cold-air setups.

Affected Regions
NORTHERN KYLOUISVILLE METRO

The Stratus Scour Struggle

The NAM is significantly more aggressive than the GFS regarding the persistence of low-level cloud cover trapped under the post-frontal inversion, particularly in the Eastern Coalfields and Bluegrass.

NAM
VS
GFS
Why NAM Wins

The NAM's higher vertical resolution typically handles shallow boundary layer moisture and subsidence inversions better than the global GFS, which tends to clear skies too quickly in post-frontal regimes.

Affected Regions
BLUEGRASS CORENORTHEAST KYSOUTHEAST COALFIELDS

Technical Analysis

This section provides a deep, physics-based explanation of the weather. Our AI system analyzed multiple atmospheric layers and variables from all available models to synthesize this technical overview.

Below you'll find detailed breakdowns of the atmospheric dynamics that are driving today's forecast, including thermodynamics, kinematics, and hydrology.

Thermodynamics

Stability & Temperatures

How temperature changes with altitude. This determines whether precipitation falls as rain, snow, sleet, or freezing rain based on the vertical temperature profile.

Thermal Profile Overview

A classic post-frontal profile is in place with a sharp subsidence inversion near 850mb. Temperatures in the low-levels are quite cold, with the 0C isotherm suppressed toward the TN border during the morning hours.

Thermal Boundary

The surface freezing line is expected to bisect the state along the Western Kentucky and Bluegrass Parkways through mid-morning before retreating into the Ohio River valley by afternoon.

Diurnal Trend

A muted diurnal curve is expected, particularly in the northern half of the state where clouds and cold air advection will offset solar heating. A non-diurnal trend is possible in Northern KY as temps may plateau early.

Kinematics

Wind & Energy

Wind patterns and atmospheric energy. Frontal passages, jet stream positioning, and vorticity tell us where and when lift will generate precipitation.

Frontal Passage

A weak, moisture-starved cold front cleared the state prior to 06Z, indicated by a shift to northwesterly winds and dropping dewpoints into the teens and 20s.

Jet Stream Support

The right entrance region of a 100kt jet core is providing synoptic lift, but it is insufficient to overcome the dry low-level air mass, resulting in nothing more than high-level clouds.

Energy Status

Vorticity maximum associated with a compact 500mb shortwave will peak around 15Z-18Z across the Bluegrass before exiting to the east.

Hydrology

Moisture & Precipitation

Moisture content and precipitation character. This reveals whether the atmosphere is saturated enough to produce precipitation, and what type to expect (steady vs. bursts).

Saturation Status

The atmospheric column is deeply undersaturated above 850mb. Large dewpoint depressions (>20F) in the mid-levels indicate a high risk of virga that will fail to reach the surface.

Precipitation Character

Expect no measurable precipitation. Any localized moisture will merely result in non-precipitating stratocumulus or thin cirrus.

Flooding Context

No hydrologic concerns as the state remains in a dry period with high evapotranspiration potential once skies clear.

Winter Physics

Accumulation & Layers

Specific physical factors affecting winter weather, including the vertical melt/freeze profile and snow quality.

Layer Analysis

The entire vertical column remains below freezing north of I-64, but the lack of moisture in the Dendritic Growth Zone (DGZ) precludes any snow threat.

Crystal Habit

None due to lack of saturation in the favorable growth temperature regime.

Road Impact

Dry roads are expected statewide; no icing or accumulation is anticipated.

Celestial Almanac

Moon Phase

Full Moon

100% Illumination
Moonrise
6:10 PM
Moonset
8:47 AM
Purchase Area
Sunrise
8:09 AM
Sunset
5:50 PM
Civil Dawn
7:40 AM
Civil Dusk
6:19 PM
Northwest Pennyrile
Sunrise
8:05 AM
Sunset
5:42 PM
Civil Dawn
7:36 AM
Civil Dusk
6:12 PM
Southwest Pennyrile
Sunrise
8:04 AM
Sunset
5:46 PM
Civil Dawn
7:35 AM
Civil Dusk
6:15 PM
Barren River
Sunrise
8:00 AM
Sunset
5:42 PM
Civil Dawn
7:31 AM
Civil Dusk
6:11 PM
Louisville Metro
Sunrise
8:01 AM
Sunset
5:36 PM
Civil Dawn
7:31 AM
Civil Dusk
6:05 PM
Lincoln Trail
Sunrise
8:00 AM
Sunset
5:38 PM
Civil Dawn
7:30 AM
Civil Dusk
6:07 PM
Lake Cumberland
Sunrise
7:53 AM
Sunset
5:34 PM
Civil Dawn
7:24 AM
Civil Dusk
6:03 PM
Northern Kentucky
Sunrise
7:58 AM
Sunset
5:28 PM
Civil Dawn
7:28 AM
Civil Dusk
5:58 PM
Inner Bluegrass
Sunrise
7:55 AM
Sunset
5:31 PM
Civil Dawn
7:26 AM
Civil Dusk
6:00 PM
Bluegrass Foothills
Sunrise
7:53 AM
Sunset
5:31 PM
Civil Dawn
7:24 AM
Civil Dusk
6:00 PM
Northeast Kentucky
Sunrise
7:49 AM
Sunset
5:22 PM
Civil Dawn
7:19 AM
Civil Dusk
5:52 PM
Southeast Kentucky
Sunrise
7:48 AM
Sunset
5:28 PM
Civil Dawn
7:19 AM
Civil Dusk
5:57 PM

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.