Heat Advisory — Stewart, TN, Montgomery, TN, Robertson, TN, Sumner, TN, Macon, TN, Clay, TN, Houston, TN, Humphreys, TN, Dickson, TN, Cheatham, TN, Davidson, TN, Wilson, TN, Trousdale, TN, Smith, TN, Jackson, TN, Putnam, 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 8:00 PM

Sumner County, Middle Tennessee, Tennessee, United States

Last updated: 3:51 PM CDT  ·  Refresh
33°C
Feels like 36°
Clear
▲ 35°  /  ▼ 19°
Wind
6 mph NW
Humidity
45%
Dew Point
19°
Pressure
29,25 inHg
Visibility
10 mi
UV Index
6,9
Cloud Cover
8%
Sunrise
6:26 AM
Sunset
6:56 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Sumner County is currently clear at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 753 J/kg) — isolated convective development possible. Sunrise: 6:26AM · Sunset: 6:56PM.

Alerts

Heat Advisory
Stewart, TN, Montgomery, TN, Robertson, TN, Sumner, TN, Macon, TN, Clay, TN, Houston, TN, Humphreys, TN, Dickson, TN, Cheatham, TN, Davidson, TN, Wilson, TN, Trousdale, TN, Smith, TN, Jackson, TN, Putnam, 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 8:00 PM
44 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
3%
4 PM
35°
5%
5 PM
34°
5%
6 PM
32°
5%
7 PM
31°
5%
8 PM
28°
5%
9 PM
27°
5%
10 PM
27°
5%
11 PM
26°
8%
12 AM
25°
8%
1 AM
24°
8%
2 AM
24°
5%
3 AM
23°
5%
4 AM
22°
5%
5 AM
22°
5%
6 AM
21°
3%
7 AM
22°
3%
8 AM
23°
3%
9 AM
23°
3%
10 AM
26°
3%
11 AM
27°
3%
12 PM
29°
3%
1 PM
30°
3%
2 PM
30°
3%
7-Day Forecast
Today
35° 19°
Clear.
Mon
33° 21°
Mostly Clear.
Tue
38° 21°
Mostly Clear.
Wed
36° 23°
Clear.
Thu
36° 22°
Clear.
Fri
35° 22°
Clear.
Sat
35° 21°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 33° Clear 3% 6 mph NW 45%
4 PM 35° Clear 5% 6 mph NW 48%
5 PM 34° Clear 5% 5 mph NNW 53%
6 PM 32° Clear 5% 3 mph NNW 58%
7 PM 31° Mostly Clear 5% 3 mph N 61%
8 PM 28° Mostly Clear 5% 4 mph N 64%
9 PM 27° Mostly Clear 5% 5 mph N 68%
10 PM 27° Partly Cloudy 5% 5 mph N 71%
11 PM 26° Partly Cloudy 8% 5 mph NNE 73%
12 AM 25° Mostly Cloudy 8% 6 mph NNE 76%
1 AM 24° Mostly Cloudy 8% 6 mph NNE 79%
2 AM 24° Partly Cloudy 5% 7 mph NNE 82%
3 AM 23° Clear 5% 8 mph NNE 85%
4 AM 22° Clear 5% 8 mph NE 87%
5 AM 22° Mostly Clear 5% 9 mph NE 89%
6 AM 21° Mostly Clear 3% 8 mph NE 90%
7 AM 22° Mostly Clear 3% 9 mph NE 85%
8 AM 23° Mostly Clear 3% 9 mph NE 80%
9 AM 23° Mostly Clear 3% 9 mph NE 76%
10 AM 26° Mostly Clear 3% 9 mph NE 72%
11 AM 27° Mostly Clear 3% 8 mph NE 68%
12 PM 29° Partly Cloudy 3% 8 mph NE 64%
1 PM 30° Mostly Clear 3% 8 mph NE 63%
2 PM 30° Mostly Clear 3% 8 mph NE 62%
15-Day Forecast
Today
9/13
Clear
5%
19°
35°
Mon
9/14
Mostly Clear
8%
21°
33°
Tue
9/15
Mostly Clear
3%
21°
38°
Wed
9/16
Clear
3%
23°
36°
Thu
9/17
Clear
19%
22°
36°
Fri
9/18
Clear
19%
22°
35°
Sat
9/19
Clear
19%
21°
35°
Sun
9/20
Clear
60%
20°
33°
Mon
9/21
Drizzle
60%
19°
32°
Tue
9/22
Drizzle
60%
16°
28°
Wed
9/23
Drizzle
60%
12°
28°
Thu
9/24
Drizzle
60%
17°
28°
Fri
9/25
Drizzle
60%
16°
28°
Sat
9/26
Drizzle
60%
16°
28°
Sun
9/27
Drizzle
60%
14°
28°
44
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
39 AQI 7.2 µg/m³
O3
Ground-level ozone
Dominant
44 AQI 48 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 44 Good 44 39
Tue 37 Good 37 33
Wed 54 Moderate 54 51
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 dim. sept. 13, 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
SBCAPE963 J/kg
MLCAPE392 J/kg
MUCAPE963 J/kg
SBCIN-0 J/kg
MLCIN-23 J/kg
Lifted Index-2.8
Kinematics
0–6 km Shear16 kt
0–1 km Shear3 kt
Eff. Shear15 kt
0–1 km SRH12
0–3 km SRH6
Eff. SRH6
Storm Motion344° @ 21 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index25.6
Thermo & Levels
PWAT1.47 in
0–3 km LR8.1 °C/km
700–500 LR5.6 °C/km
Total Totals44.9
LCL798 hPa
LFC798 hPa
EL189 hPa
Freezing Lvl15,518 ft