Weather Forecast for Knoxville

Tennessee, United States of America

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Partly cloudy

Current Weather - Knoxville: 22°C

Tennessee, United States of America

Partly cloudy

Feels like 25°C

Wind

4 km/h NE

Humidity

100%

Pressure

1019 mb

UV Index

0

Visibility

14 km

Patchy rain nearby

Patchy rain nearby

Monday, July 13, 2026

High

29°C

Low

21°C

Rain Chance

86%

Hourly Forecast

Patchy rain nearby 23°C
08:00
Patchy rain nearby 24°C
09:00
Partly Cloudy 26°C
10:00
Sunny 28°C
11:00
Sunny 29°C
12:00
Light rain shower 26°C
13:00
Light rain shower 27°C
14:00
Patchy rain nearby 27°C
15:00
Light rain shower 26°C
16:00
Moderate or heavy rain shower 24°C
17:00
Moderate or heavy rain shower 23°C
18:00
Light rain shower 22°C
19:00
Mist 22°C
20:00
Mist 21°C
21:00
Mist 21°C
22:00
Mist 21°C
23:00
Jul 14

Day Statistics

Maximum Wind

12 km/h

Humidity

89%

Precipitation

23 mm

UV Index

9

Visibility

7 km

Rain Chance

86%

Snow Chance

0%

Sun & Moon

Sunrise

06:29 AM

Sunset

08:53 PM

Moonrise

04:52 AM

Moonset

08:28 PM

Moon Phase

New Moon

Moon Illumination

0%

Air Quality

PM2.5

4.3

μg/m³

PM10

4.7

μg/m³

NO₂

4.2

μg/m³

O₃

62.8

μg/m³

SO₂

0.4

μg/m³

CO

134.5

μg/m³

US EPA Index: 1 GB DEFRA Index: 1

Weather Alerts

Flash Flood Warning issued July 12 at 10:31PM EDT until July 13 at 1:00AM EDT by NWS Morristown TN

Blount, TN; Knox, TN Jul 12, 10:31 PM - Jul 13, 01:00 AM
Severity: Severe Urgency: Immediate

FFWMRX The National Weather Service in Morristown has extended the * Flash Flood Warning for... Northwestern Blount County in east Tennessee... Southern Knox County in east Tennessee... * Until 100 AM EDT. * At 1031 PM EDT, emergency management reported flooding in Knoxville. Heavy rain will be moving across areas that have already experienced flooding. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. HAZARD...Life threatening flash flooding. Heavy rain producing flash flooding. SOURCE...Emergency management reported. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Knoxville, Alcoa, Farragut, Louisville, Rockford, Bearden and Lake Forest. This includes the following highways... Interstate 75 in Tennessee near mile marker 108. Interstate 40 in Tennessee between mile markers 373 and 393.

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding.

Event: Flash Flood Warning Certainty: Likely Category: Met

When to visit Knoxville?

Plan your perfect trip with our month-by-month weather guide

⭐ Best months: August September October

January

☀️
9°C
💧
16 Days of rain
❄️
Heavy snow expected
🥶 Coldest month

February

☀️
12°C
💧
16 Days of rain
❄️
Heavy snow expected

March

☀️
16°C
💧
18 Days of rain
❄️
Moderate snowfall
🌧 Wettest month,

April

☀️
22°C
💧
16 Days of rain
❄️
No snowfall

May

☀️
26°C
💧
14 Days of rain
❄️
No snowfall

June

☀️
30°C
💧
14 Days of rain
❄️
No snowfall

July

☀️
31°C
💧
18 Days of rain
❄️
No snowfall
🔥 Hottest month

August

☀️
31°C
💧
13 Days of rain
❄️
No snowfall
Best time to visit

September

☀️
28°C
💧
13 Days of rain
❄️
No snowfall
Best time to visit

October

☀️
22°C
💧
11 Days of rain
❄️
Light snow possible
Best time to visit
🌵 Driest month

November

☀️
16°C
💧
14 Days of rain
❄️
Light snow possible

December

☀️
11°C
💧
17 Days of rain
❄️
Moderate snowfall