Severe Thunderstorm Watch 9:00 PM Severe Thunderstorm Watch 9:00 PM Areal Flood Warning — Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Grayson County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Larue County, KY, Meade County, KY, Nelson County, KY, Ohio County, KY 9:45 PM

Grayson County, Kentucky, United States

Last updated: 8:28 PM CDT  ·  Refresh
25°C
Feels like 29°
Mostly Cloudy
▲ 33°  /  ▼ 20°
Wind
6 mph W
Humidity
92%
Dew Point
24°
Pressure
29.10 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
69%
Sunrise
5:40 AM
Sunset
8:02 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Grayson County is currently mostly cloudy at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1745 J/kg) — isolated convective development possible. Sunrise: 5:40AM · Sunset: 8:02PM.

Alerts

Severe Thunderstorm Watch
Expires 9:00 PM
Severe Thunderstorm Watch
Expires 9:00 PM
Areal Flood Warning
Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Grayson County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Larue County, KY, Meade County, KY, Nelson County, KY, Ohio County, KY
Expires 9:45 PM
47 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
47%
9 PM
24°
24%
10 PM
24°
23%
11 PM
23°
16%
12 AM
23°
14%
1 AM
22°
3%
2 AM
22°
3%
3 AM
22°
3%
4 AM
21°
4%
5 AM
21°
5%
6 AM
20°
5%
7 AM
21°
5%
8 AM
22°
7%
9 AM
23°
7%
10 AM
24°
15%
11 AM
24°
5%
12 PM
26°
5%
1 PM
27°
5%
2 PM
27°
5%
3 PM
27°
5%
4 PM
27°
3%
5 PM
26°
3%
6 PM
25°
3%
7 PM
24°
3%
7-Day Forecast
Tonight
33° 20°
Mostly Cloudy with a 47% chance of rain.
Wed
28° 17°
Partly Cloudy.
Thu
27° 14°
Clear.
Fri
23° 16°
Mostly Cloudy with a 42% chance of rain.
Sat
28° 18°
Mostly Clear with a 29% chance of rain.
Sun
32° 21°
Thunderstorm, 70% chance.
Mon
33° 23°
Thunderstorm, 52% chance.
TimeTempConditionsPrecipWindHumidity
Now 25° Mostly Cloudy 47% 6 mph W 92%
9 PM 24° Mostly Cloudy 24% 5 mph SW 95%
10 PM 24° Mostly Cloudy 23% 5 mph WSW 95%
11 PM 23° Partly Cloudy 16% 5 mph W 95%
12 AM 23° Mostly Clear 14% 4 mph W 95%
1 AM 22° Mostly Clear 3% 4 mph WNW 94%
2 AM 22° Partly Cloudy 3% 4 mph NW 95%
3 AM 22° Mostly Clear 3% 4 mph NW 95%
4 AM 21° Mostly Clear 4% 5 mph NNW 96%
5 AM 21° Mostly Clear 5% 5 mph NNW 96%
6 AM 20° Partly Cloudy 5% 5 mph N 96%
7 AM 21° Mostly Cloudy 5% 6 mph N 93%
8 AM 22° Mostly Cloudy 7% 7 mph NNE 90%
9 AM 23° Mostly Cloudy 7% 8 mph NNE 86%
10 AM 24° Mostly Cloudy 15% 8 mph NNE 82%
11 AM 24° Partly Cloudy 5% 8 mph NNE 78%
12 PM 26° Partly Cloudy 5% 8 mph NNE 74%
1 PM 27° Partly Cloudy 5% 9 mph NNE 71%
2 PM 27° Partly Cloudy 5% 9 mph NNE 70%
3 PM 27° Partly Cloudy 5% 10 mph NNE 69%
4 PM 27° Mostly Cloudy 3% 10 mph NNE 69%
5 PM 26° Mostly Cloudy 3% 9 mph NNE 72%
6 PM 25° Mostly Cloudy 3% 9 mph NNE 74%
7 PM 24° Mostly Cloudy 3% 9 mph NNE 76%
15-Day Forecast
Today
7/21
Mostly Cloudy
47%
20°
33°
Wed
7/22
Partly Cloudy
7%
17°
28°
Thu
7/23
Clear
3%
14°
27°
Fri
7/24
Mostly Cloudy
42%
16°
23°
Sat
7/25
Mostly Clear
29%
18°
28°
Sun
7/26
Thunderstorm
70%
21°
32°
Mon
7/27
Thunderstorm
52%
23°
33°
Tue
7/28
Drizzle
53%
19°
31°
Wed
7/29
Drizzle
44%
17°
29°
Thu
7/30
Drizzle
44%
16°
29°
Fri
7/31
Drizzle
36%
16°
29°
Sat
8/1
Clear
60%
18°
30°
Sun
8/2
Drizzle
60%
18°
31°
Mon
8/3
Drizzle
60%
19°
31°
Tue
8/4
Drizzle
60%
20°
31°
47
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
47 AQI 8.5 µg/m³
O3
Ground-level ozone
27 AQI 30 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 47 Good 27 47
Thu 31 Good 28 31
Fri 36 Good 36 26
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Tue Jul 21, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1457 J/kg
MLCAPE1067 J/kg
MUCAPE2245 J/kg
SBCIN-78 J/kg
MLCIN0 J/kg
Lifted Index-2.8
Kinematics
0–6 km Shear44 kt
0–1 km Shear16 kt
Eff. Shear47 kt
0–1 km SRH-98
0–3 km SRH-119
Eff. SRH-119
Storm Motion263° @ 32 kt
0–1 km EHI-0.9
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index26.0
Thermo & Levels
PWAT1.69 in
0–3 km LR4.7 °C/km
700–500 LR5.4 °C/km
Total Totals42.8
LCL967 hPa
LFC840 hPa
EL159 hPa
Freezing Lvl16,434 ft