Extreme Heat Warning — Marshall, MS, Benton, MS, Tippah, MS, Alcorn, MS, Tishomingo, MS, Prentiss, MS, Lafayette, MS, Union, MS, Pontotoc, MS, Lee, MS, Itawamba, MS, Yalobusha, MS, Calhoun, MS, Chickasaw, MS, Monroe, MS, Benton, TN, Chester, TN, Henderson, TN, Decatur, TN, Hardeman, TN, McNairy, TN, Hardin, TN 8:00 PM Heat Advisory — Marshall, MS, Benton, MS, Tippah, MS, Alcorn, MS, Tishomingo, MS, Prentiss, MS, Lafayette, MS, Union, MS, Pontotoc, MS, Lee, MS, Itawamba, MS, Yalobusha, MS, Calhoun, MS, Chickasaw, MS, Monroe, MS, Benton, TN, Chester, TN, Henderson, TN, Decatur, TN, Hardeman, TN, McNairy, TN, Hardin, TN 8:00 PM

McNairy County, West Tennessee, Tennessee, United States

Last updated: 12:39 AM CDT  ·  Refresh
27°C
Feels like 31°
Partly Cloudy
▲ 37°  /  ▼ 24°
Wind
2 mph SSW
Humidity
90%
Dew Point
26°
Pressure
29.38 inHg
Visibility
6 mi
UV Index
0.0
Cloud Cover
50%
Sunrise
5:59 AM
Sunset
8:01 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: McNairy County is currently partly cloudy at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3416 J/kg) — isolated convective development possible. Sunrise: 5:59AM · Sunset: 8:01PM.

Alerts

Extreme Heat Warning
Marshall, MS, Benton, MS, Tippah, MS, Alcorn, MS, Tishomingo, MS, Prentiss, MS, Lafayette, MS, Union, MS, Pontotoc, MS, Lee, MS, Itawamba, MS, Yalobusha, MS, Calhoun, MS, Chickasaw, MS, Monroe, MS, Benton, TN, Chester, TN, Henderson, TN, Decatur, TN, Hardeman, TN, McNairy, TN, Hardin, TN
Expires 8:00 PM
Heat Advisory
Marshall, MS, Benton, MS, Tippah, MS, Alcorn, MS, Tishomingo, MS, Prentiss, MS, Lafayette, MS, Union, MS, Pontotoc, MS, Lee, MS, Itawamba, MS, Yalobusha, MS, Calhoun, MS, Chickasaw, MS, Monroe, MS, Benton, TN, Chester, TN, Henderson, TN, Decatur, TN, Hardeman, TN, McNairy, TN, Hardin, TN
Expires 8:00 PM
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
16%
1 AM
27°
20%
2 AM
26°
29%
3 AM
26°
34%
4 AM
26°
33%
5 AM
25°
33%
6 AM
25°
20%
7 AM
26°
17%
8 AM
28°
18%
9 AM
29°
18%
10 AM
31°
10%
11 AM
32°
13%
12 PM
33°
8%
1 PM
35°
8%
2 PM
35°
8%
3 PM
34°
9%
4 PM
34°
9%
5 PM
34°
9%
6 PM
33°
9%
7 PM
33°
9%
8 PM
32°
5%
9 PM
29°
5%
10 PM
28°
5%
11 PM
28°
5%
7-Day Forecast
Today
37° 24°
Partly Cloudy with a 34% chance of rain.
Tue
39° 24°
Partly Cloudy with a 51% chance of rain.
Wed
34° 21°
Mostly Cloudy with a 57% chance of rain.
Thu
31° 18°
Clear with a 33% chance of rain.
Fri
30° 19°
Rain, 30% chance.
Sat
31° 19°
Rain, 82% chance.
Sun
28° 19°
Rain, 28% chance.
TimeTempConditionsPrecipWindHumidity
Now 27° Partly Cloudy 16% 2 mph SSW 90%
1 AM 27° Partly Cloudy 20% 3 mph S 90%
2 AM 26° Mostly Cloudy 29% 3 mph SSW 91%
3 AM 26° Mostly Cloudy 34% 3 mph S 91%
4 AM 26° Partly Cloudy 33% 4 mph S 92%
5 AM 25° Mostly Cloudy 33% 3 mph SSW 92%
6 AM 25° Mostly Cloudy 20% 3 mph SSW 91%
7 AM 26° Partly Cloudy 17% 3 mph SW 88%
8 AM 28° Mostly Clear 18% 4 mph SW 82%
9 AM 29° Mostly Clear 18% 6 mph WSW 75%
10 AM 31° Mostly Clear 10% 6 mph W 68%
11 AM 32° Mostly Clear 13% 6 mph W 62%
12 PM 33° Partly Cloudy 8% 6 mph W 56%
1 PM 35° Partly Cloudy 8% 6 mph W 55%
2 PM 35° Partly Cloudy 8% 6 mph W 56%
3 PM 34° Mostly Clear 9% 7 mph W 58%
4 PM 34° Mostly Clear 9% 7 mph W 61%
5 PM 34° Mostly Clear 9% 6 mph W 66%
6 PM 33° Clear 9% 5 mph WSW 71%
7 PM 33° Clear 9% 4 mph SW 76%
8 PM 32° Clear 5% 4 mph SSW 80%
9 PM 29° Clear 5% 6 mph SSW 82%
10 PM 28° Clear 5% 6 mph SSW 84%
11 PM 28° Clear 5% 5 mph SSW 84%
15-Day Forecast
Today
7/27
Partly Cloudy
34%
24°
37°
Tue
7/28
Partly Cloudy
51%
24°
39°
Wed
7/29
Mostly Cloudy
57%
21°
34°
Thu
7/30
Clear
33%
18°
31°
Fri
7/31
Rain
30%
19°
30°
Sat
8/1
Rain
82%
19°
31°
Sun
8/2
Rain
28%
19°
28°
Mon
8/3
Rain
69%
19°
31°
Tue
8/4
Rain
68%
21°
33°
Wed
8/5
Clear
36%
22°
34°
Thu
8/6
Thunderstorm
60%
22°
33°
Fri
8/7
Drizzle
60%
22°
33°
Sat
8/8
Drizzle
60%
22°
33°
Sun
8/9
Drizzle
60%
22°
33°
Mon
8/10
Drizzle
60%
22°
33°
53
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
53 AQI 10.1 µg/m³
O3
Ground-level ozone
32 AQI 35 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 53 Moderate 32 53
Tue 57 Moderate 32 57
Wed 51 Moderate 39 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 Mon Jul 27, 04:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3143 J/kg
MLCAPE3187 J/kg
MUCAPE4132 J/kg
SBCIN-164 J/kg
MLCIN0 J/kg
Lifted Index-6.5
Kinematics
0–6 km Shear22 kt
0–1 km Shear11 kt
Eff. Shear32 kt
0–1 km SRH11
0–3 km SRH35
Eff. SRH35
Storm Motion283° @ 18 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.2
STP (eff)0.2
Supercell2.4
K-Index29.6
Thermo & Levels
PWAT1.79 in
0–3 km LR4.9 °C/km
700–500 LR6.1 °C/km
Total Totals41.4
LCL977 hPa
LFC755 hPa
EL143 hPa
Freezing Lvl16,302 ft