Extreme Heat Warning — Stewart, TN, Montgomery, TN, Robertson, TN, Sumner, TN, Houston, TN, Humphreys, TN, Dickson, TN, Cheatham, TN, Davidson, TN, Wilson, TN, Trousdale, TN, Smith, TN, Perry, TN, Hickman, TN, Lewis, TN, Williamson, TN, Maury, TN, Marshall, TN, Rutherford, TN, Cannon, TN, De Kalb, TN, Bedford, TN, Wayne, TN, Lawrence, TN, Giles, TN 7:00 PM

Sumner County, Middle Tennessee, Tennessee, United States

Last updated: 3:47 PM CDT  ·  Refresh
35°C
Feels like 41°
Partly Cloudy
▲ 35°  /  ▼ 23°
Wind
7 mph WNW
Humidity
52%
Dew Point
23°
Pressure
29.31 inHg
Visibility
10 mi
UV Index
7.0
Cloud Cover
49%
Sunrise
6:02 AM
Sunset
7:37 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Sumner County is currently partly cloudy at 35°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2617 J/kg) — isolated convective development possible. Sunrise: 6:02AM · Sunset: 7:37PM.

Alerts

Extreme Heat Warning
Stewart, TN, Montgomery, TN, Robertson, TN, Sumner, TN, Houston, TN, Humphreys, TN, Dickson, TN, Cheatham, TN, Davidson, TN, Wilson, TN, Trousdale, TN, Smith, TN, Perry, TN, Hickman, TN, Lewis, TN, Williamson, TN, Maury, TN, Marshall, TN, Rutherford, TN, Cannon, TN, De Kalb, TN, Bedford, TN, Wayne, TN, Lawrence, TN, Giles, TN
Expires 7:00 PM
38 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
35°
21%
4 PM
34°
21%
5 PM
33°
20%
6 PM
32°
5%
7 PM
31°
5%
8 PM
29°
5%
9 PM
28°
5%
10 PM
28°
3%
11 PM
27°
3%
12 AM
27°
3%
1 AM
26°
3%
2 AM
26°
3%
3 AM
26°
3%
4 AM
23°
3%
5 AM
23°
3%
6 AM
24°
3%
7 AM
25°
3%
8 AM
28°
3%
9 AM
29°
3%
10 AM
32°
3%
11 AM
32°
3%
12 PM
34°
3%
1 PM
34°
3%
2 PM
34°
3%
7-Day Forecast
Today
35° 23°
Partly Cloudy with a 21% chance of rain.
Sat
37° 23°
Mostly Clear.
Sun
38° 23°
Mostly Clear with a 26% chance of rain.
Mon
33° 22°
Mostly Cloudy with a 22% chance of rain.
Tue
32° 21°
Clear with a 35% chance of rain.
Wed
35° 22°
Thunderstorm, 60% chance.
Thu
31° 19°
Drizzle, 60% chance.
TimeTempConditionsPrecipWindHumidity
Now 35° Partly Cloudy 21% 7 mph WNW 52%
4 PM 34° Mostly Cloudy 21% 5 mph WSW 57%
5 PM 33° Partly Cloudy 20% 5 mph SW 60%
6 PM 32° Partly Cloudy 5% 5 mph SW 65%
7 PM 31° Partly Cloudy 5% 4 mph SW 69%
8 PM 29° Partly Cloudy 5% 2 mph WSW 72%
9 PM 28° Partly Cloudy 5% 2 mph SSE 75%
10 PM 28° Partly Cloudy 3% 2 mph SSE 77%
11 PM 27° Partly Cloudy 3% 2 mph SSE 78%
12 AM 27° Mostly Clear 3% 3 mph SE 80%
1 AM 26° Mostly Clear 3% 3 mph SSE 82%
2 AM 26° Mostly Clear 3% 3 mph S 83%
3 AM 26° Clear 3% 3 mph S 84%
4 AM 23° Mostly Clear 3% 2 mph S 85%
5 AM 23° Mostly Clear 3% 2 mph S 85%
6 AM 24° Partly Cloudy 3% 3 mph SSE 84%
7 AM 25° Mostly Clear 3% 3 mph S 78%
8 AM 28° Mostly Clear 3% 4 mph SSW 68%
9 AM 29° Clear 3% 5 mph SW 60%
10 AM 32° Clear 3% 5 mph SW 55%
11 AM 32° Clear 3% 5 mph WSW 51%
12 PM 34° Clear 3% 6 mph WSW 47%
1 PM 34° Clear 3% 6 mph WSW 46%
2 PM 34° Clear 3% 6 mph WSW 46%
15-Day Forecast
Today
8/14
Partly Cloudy
21%
23°
35°
Sat
8/15
Mostly Clear
3%
23°
37°
Sun
8/16
Mostly Clear
26%
23°
38°
Mon
8/17
Mostly Cloudy
22%
22°
33°
Tue
8/18
Clear
35%
21°
32°
Wed
8/19
Thunderstorm
60%
22°
35°
Thu
8/20
Drizzle
60%
19°
31°
Fri
8/21
Drizzle
60%
17°
29°
Sat
8/22
Drizzle
60%
16°
29°
Sun
8/23
Drizzle
60%
15°
31°
Mon
8/24
Clear
25%
18°
31°
Tue
8/25
Drizzle
60%
21°
33°
Wed
8/26
Drizzle
60%
21°
32°
Thu
8/27
Drizzle
60%
21°
32°
Fri
8/28
Drizzle
60%
20°
32°
38
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
38 AQI 6.8 µg/m³
O3
Ground-level ozone
30 AQI 33 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 38 Good 30 38
Sun 52 Moderate 35 52
Mon 53 Moderate 38 53
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 Fri Aug 14, 19:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3360 J/kg
MLCAPE2301 J/kg
MUCAPE3360 J/kg
SBCIN0 J/kg
MLCIN-2 J/kg
Lifted Index-6.6
Kinematics
0–6 km Shear6 kt
0–1 km Shear3 kt
Eff. Shear6 kt
0–1 km SRH6
0–3 km SRH7
Eff. SRH7
Storm Motion16° @ 12 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index38.2
Thermo & Levels
PWAT2.12 in
0–3 km LR8.3 °C/km
700–500 LR5.5 °C/km
Total Totals49.1
LCL834 hPa
LFC993 hPa
EL136 hPa
Freezing Lvl16,604 ft