Heat Advisory — Stewart, TN, Montgomery, TN, Houston, TN, Humphreys, TN, Dickson, TN, Perry, TN, Hickman, TN, Lewis, TN, Wayne, TN, Lawrence, TN, Robertson, TN, Sumner, TN, Macon, TN, Cheatham, TN, Davidson, TN, Wilson, TN, Trousdale, TN, Smith, TN, Williamson, TN, Maury, TN, Marshall, TN, Rutherford, TN, Bedford, TN, Giles, TN 8:00 PM

Sumner County, Middle Tennessee, Tennessee, United States

Last updated: 4:29 AM CDT  ·  Refresh
23°C
Feels like 27°
Rain
▲ 34°  /  ▼ 23°
Wind
5 mph WSW
Humidity
94%
Dew Point
22°
Pressure
29.16 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
93%
Sunrise
5:48 AM
Sunset
7:55 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Sumner County is currently rain at 23°C. Precipitation is likely — peak probability 77% around 5 AM. Atmospheric instability is elevated (CAPE up to 3442 J/kg) — isolated convective development possible. Sunrise: 5:48AM · Sunset: 7:55PM.

Alerts

Heat Advisory
Stewart, TN, Montgomery, TN, Houston, TN, Humphreys, TN, Dickson, TN, Perry, TN, Hickman, TN, Lewis, TN, Wayne, TN, Lawrence, TN, Robertson, TN, Sumner, TN, Macon, TN, Cheatham, TN, Davidson, TN, Wilson, TN, Trousdale, TN, Smith, TN, Williamson, TN, Maury, TN, Marshall, TN, Rutherford, TN, Bedford, TN, Giles, TN
Expires 8:00 PM
41 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
64%
5 AM
22°
77%
6 AM
22°
42%
7 AM
22°
26%
8 AM
23°
23%
9 AM
25°
23%
10 AM
27°
23%
11 AM
28°
17%
12 PM
30°
17%
1 PM
33°
17%
2 PM
33°
18%
3 PM
34°
18%
4 PM
34°
31%
5 PM
34°
31%
6 PM
33°
23%
7 PM
32°
18%
8 PM
31°
18%
9 PM
29°
18%
10 PM
28°
18%
11 PM
28°
19%
12 AM
27°
19%
1 AM
27°
19%
2 AM
27°
19%
3 AM
27°
20%
7-Day Forecast
Today
34° 23°
Partly Cloudy with a 64% chance of rain.
Tue
36° 22°
Partly Cloudy with a 47% chance of rain.
Wed
31° 19°
Partly Cloudy.
Thu
29° 18°
Mostly Clear with a 33% chance of rain.
Fri
28° 19°
Rain, 64% chance.
Sat
27° 18°
Heavy Rain, 82% chance.
Sun
28° 20°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Rain 64% 5 mph WSW 94%
5 AM 22° Overcast 77% 4 mph WSW 95%
6 AM 22° Mostly Cloudy 42% 4 mph W 95%
7 AM 22° Mostly Cloudy 26% 4 mph ESE 92%
8 AM 23° Mostly Cloudy 23% 3 mph S 87%
9 AM 25° Mostly Clear 23% 3 mph SSW 81%
10 AM 27° Clear 23% 3 mph SW 76%
11 AM 28° Clear 17% 4 mph WSW 70%
12 PM 30° Clear 17% 4 mph WSW 64%
1 PM 33° Clear 17% 5 mph W 60%
2 PM 33° Mostly Clear 18% 5 mph W 60%
3 PM 34° Partly Cloudy 18% 5 mph W 60%
4 PM 34° Partly Cloudy 31% 4 mph W 62%
5 PM 34° Partly Cloudy 31% 4 mph W 66%
6 PM 33° Partly Cloudy 23% 5 mph WSW 72%
7 PM 32° Partly Cloudy 18% 4 mph SW 76%
8 PM 31° Partly Cloudy 18% 4 mph SSW 80%
9 PM 29° Mostly Cloudy 18% 4 mph S 82%
10 PM 28° Mostly Cloudy 18% 4 mph SSW 84%
11 PM 28° Mostly Cloudy 19% 4 mph SSW 86%
12 AM 27° Mostly Cloudy 19% 5 mph SSW 88%
1 AM 27° Partly Cloudy 19% 5 mph SSW 89%
2 AM 27° Partly Cloudy 19% 5 mph SW 90%
3 AM 27° Partly Cloudy 20% 6 mph SW 91%
15-Day Forecast
Today
7/27
Partly Cloudy
64%
23°
34°
Tue
7/28
Partly Cloudy
47%
22°
36°
Wed
7/29
Partly Cloudy
14%
19°
31°
Thu
7/30
Mostly Clear
33%
18°
29°
Fri
7/31
Rain
64%
19°
28°
Sat
8/1
Heavy Rain
82%
18°
27°
Sun
8/2
Rain
63%
20°
28°
Mon
8/3
Drizzle
43%
20°
31°
Tue
8/4
Drizzle
44%
21°
33°
Wed
8/5
Drizzle
68%
22°
32°
Thu
8/6
Drizzle
60%
22°
33°
Fri
8/7
Drizzle
60%
22°
33°
Sat
8/8
Drizzle
60%
22°
33°
Sun
8/9
Drizzle
60%
21°
32°
Mon
8/10
Drizzle
60%
21°
32°
41
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
41 AQI 7.5 µg/m³
O3
Ground-level ozone
33 AQI 36 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 41 Good 33 41
Tue 51 Moderate 37 51
Wed 52 Moderate 38 52
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 Mon Jul 27, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE697 J/kg
MLCAPE645 J/kg
MUCAPE786 J/kg
SBCIN-176 J/kg
MLCIN0 J/kg
Lifted Index-2.7
Kinematics
0–6 km Shear22 kt
0–1 km Shear5 kt
Eff. Shear22 kt
0–1 km SRH-15
0–3 km SRH-88
Eff. SRH-88
Storm Motion302° @ 16 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.9
Thermo & Levels
PWAT2.05 in
0–3 km LR4.5 °C/km
700–500 LR5.9 °C/km
Total Totals45.6
LCL975 hPa
LFC709 hPa
EL222 hPa
Freezing Lvl14,390 ft