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Current weather in Knoxville is overcast clouds.

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Weather data for Knoxville is updated regularly with the latest available observations and forecasts.

Now · 9:55 PM

Knoxville Weather & Hourly Forecast

United States · Tennessee · 37920

82°F

Overcast night

Feels like: 86°F

💧 Humidity 65% 🌡 Pressure 29.91 inHg 💨 Wind 4 mph 👁 Visibility 21.2 mi ☁ Clouds 98% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Knoxville

Today

10:00 PM

Overcast night

82° 💧 0.000 in 💨 4 mph H 65%29.91 inHg

Tomorrow

1:00 AM

Partly cloudy night

79° 💧 None 💨 7 mph H 69%29.94 inHg

4:00 AM

Mostly cloudy night

76° 💧 None 💨 6 mph H 78%29.91 inHg

7:00 AM

Mostly cloudy night

75° 💧 0.013 in 💨 6 mph H 83%29.97 inHg

10:00 AM

Partly cloudy

80° 💧 0.008 in 💨 6 mph H 71%29.97 inHg

1:00 PM

Thunderstorms

81° 💧 0.415 in 💨 8 mph H 70%29.94 inHg

4:00 PM

Light rain

81° 💧 0.198 in 💨 5 mph H 78%29.91 inHg

7:00 PM

Light rain

74° 💧 0.024 in 💨 5 mph H 95%29.94 inHg

10:00 PM

Mostly clear night

73° 💧 0.001 in 💨 3 mph H 97%29.97 inHg

Sunday

1:00 AM

Mostly clear night

72° 💧 0.001 in 💨 7 mph H 97%30.00 inHg

4:00 AM

Clear night

70° 💧 None 💨 5 mph H 98%30.00 inHg

7:00 AM

Partly cloudy night

70° 💧 0.000 in 💨 4 mph H 100%30.03 inHg

10:00 AM

Mostly cloudy

74° 💧 0.013 in 💨 2 mph H 89%30.06 inHg

1:00 PM

Light rain

82° 💧 0.007 in 💨 3 mph H 65%30.03 inHg

4:00 PM

Mostly sunny

86° 💧 None 💨 4 mph H 55%29.97 inHg

7:00 PM

Sunny

83° 💧 None 💨 3 mph H 65%29.97 inHg

Today

10:00 PM

Overcast night

82° 💧 None 💨 4 mph H 65%29.91 inHg

11:00 PM

Mostly cloudy night

81° 💧 0.000 in 💨 4 mph H 66%29.91 inHg

Tomorrow

12:00 AM

Mostly cloudy night

80° 💧 None 💨 5 mph H 66%29.91 inHg

1:00 AM

Partly cloudy night

79° 💧 None 💨 7 mph H 69%29.94 inHg

2:00 AM

Partly cloudy night

78° 💧 None 💨 7 mph H 73%29.91 inHg

3:00 AM

Partly cloudy night

77° 💧 None 💨 6 mph H 76%29.91 inHg

4:00 AM

Mostly cloudy night

76° 💧 None 💨 6 mph H 78%29.91 inHg

5:00 AM

Mostly cloudy night

76° 💧 None 💨 6 mph H 80%29.94 inHg

6:00 AM

Mostly cloudy night

75° 💧 None 💨 5 mph H 82%29.94 inHg

7:00 AM

Mostly cloudy night

75° 💧 0.003 in 💨 6 mph H 83%29.97 inHg

8:00 AM

Light rain

74° 💧 0.009 in 💨 5 mph H 86%29.97 inHg

9:00 AM

Partly cloudy

77° 💧 0.001 in 💨 5 mph H 80%29.97 inHg

10:00 AM

Partly cloudy

80° 💧 0.001 in 💨 6 mph H 71%29.97 inHg

11:00 AM

Partly cloudy

83° 💧 0.003 in 💨 6 mph H 64%29.97 inHg

12:00 PM

Light thunderstorms

85° 💧 0.005 in 💨 6 mph H 59%29.97 inHg

1:00 PM

Thunderstorms

81° 💧 0.135 in 💨 8 mph H 70%29.94 inHg

2:00 PM

Thunderstorms

75° 💧 0.222 in 💨 7 mph H 94%29.97 inHg

3:00 PM

Light thunderstorms

77° 💧 0.058 in 💨 9 mph H 86%29.94 inHg

4:00 PM

Light rain

81° 💧 0.012 in 💨 5 mph H 78%29.91 inHg

5:00 PM

Light rain

81° 💧 0.006 in 💨 5 mph H 75%29.91 inHg

6:00 PM

Thunderstorms

74° 💧 0.180 in 💨 6 mph H 94%29.94 inHg

7:00 PM

Light rain

74° 💧 0.020 in 💨 5 mph H 95%29.94 inHg

8:00 PM

Partly cloudy night

74° 💧 0.003 in 💨 2 mph H 97%29.94 inHg

9:00 PM

Mostly clear night

73° 💧 0.001 in 💨 4 mph H 96%29.94 inHg

10:00 PM

Mostly clear night

73° 💧 0.001 in 💨 3 mph H 97%29.97 inHg

11:00 PM

Clear night

73° 💧 0.000 in 💨 4 mph H 97%30.00 inHg

Sunday

12:00 AM

Clear night

72° 💧 None 💨 5 mph H 98%30.00 inHg

1:00 AM

Mostly clear night

72° 💧 0.000 in 💨 7 mph H 97%30.00 inHg

2:00 AM

Clear night

71° 💧 0.000 in 💨 6 mph H 97%30.00 inHg

3:00 AM

Clear night

71° 💧 None 💨 5 mph H 98%30.00 inHg

4:00 AM

Clear night

70° 💧 None 💨 5 mph H 98%30.00 inHg

5:00 AM

Mostly clear night

70° 💧 None 💨 5 mph H 98%30.00 inHg

6:00 AM

Mostly clear night

70° 💧 None 💨 5 mph H 99%30.00 inHg

7:00 AM

Partly cloudy night

70° 💧 None 💨 4 mph H 100%30.03 inHg

8:00 AM

Overcast

70° 💧 None 💨 5 mph H 99%30.06 inHg

9:00 AM

Overcast

72° 💧 0.000 in 💨 4 mph H 95%30.06 inHg

10:00 AM

Mostly cloudy

74° 💧 0.002 in 💨 2 mph H 89%30.06 inHg

11:00 AM

Light rain

77° 💧 0.006 in 💨 2 mph H 81%30.06 inHg

12:00 PM

Light rain

80° 💧 0.005 in 💨 2 mph H 72%30.06 inHg

1:00 PM

Light rain

82° 💧 0.005 in 💨 3 mph H 65%30.03 inHg

2:00 PM

Mostly sunny

84° 💧 0.002 in 💨 2 mph H 60%30.00 inHg

3:00 PM

Sunny

85° 💧 None 💨 3 mph H 57%29.97 inHg

4:00 PM

Mostly sunny

86° 💧 None 💨 4 mph H 55%29.97 inHg

5:00 PM

Sunny

86° 💧 None 💨 5 mph H 53%29.97 inHg

6:00 PM

Sunny

85° 💧 None 💨 4 mph H 54%29.97 inHg

7:00 PM

Sunny

83° 💧 None 💨 3 mph H 65%29.97 inHg

8:00 PM

Clear night

78° 💧 None 💨 3 mph H 74%30.00 inHg

9:00 PM

Mostly clear night

78° 💧 None 💨 1 mph H 75%30.03 inHg

10:00 PM

Mostly cloudy night

77° 💧 None 💨 4 mph H 76%30.06 inHg

11:00 PM

Clear night

76° 💧 None 💨 4 mph H 76%30.06 inHg

Monday

12:00 AM

Clear night

74° 💧 None 💨 3 mph H 81%30.03 inHg

1:00 AM

Mostly clear night

73° 💧 None 💨 3 mph H 84%30.03 inHg

2:00 AM

Clear night

72° 💧 None 💨 3 mph H 87%30.03 inHg

3:00 AM

Clear night

71° 💧 None 💨 2 mph H 89%30.03 inHg

4:00 AM

Clear night

70° 💧 None 💨 1 mph H 91%30.03 inHg

5:00 AM

Clear night

70° 💧 None 💨 1 mph H 93%30.03 inHg

6:00 AM

Clear night

69° 💧 None 💨 3 mph H 94%30.06 inHg

7:00 AM

Clear night

69° 💧 None 💨 3 mph H 94%30.06 inHg

8:00 AM

Mostly sunny

70° 💧 None 💨 3 mph H 93%30.09 inHg

5:00 PM

Mostly sunny

87° 💧 None 💨 8 mph H 54%30.03 inHg

8:00 PM

Clear night

80° 💧 None 💨 8 mph H 64%30.06 inHg

11:00 PM

Clear night

74° 💧 None 💨 7 mph H 75%30.12 inHg

Tuesday

2:00 AM

Clear night

70° 💧 None 💨 6 mph H 82%30.12 inHg

5:00 AM

Clear night

67° 💧 None 💨 5 mph H 84%30.12 inHg

8:00 AM

Sunny

67° 💧 None 💨 5 mph H 84%30.18 inHg

11:00 AM

Sunny

80° 💧 None 💨 1 mph H 62%30.21 inHg

2:00 PM

Sunny

88° 💧 None 💨 4 mph H 51%30.18 inHg

5:00 PM

Sunny

91° 💧 None 💨 2 mph H 42%30.12 inHg

8:00 PM

Clear night

83° 💧 None 💨 4 mph H 58%30.12 inHg

11:00 PM

Clear night

77° 💧 None 💨 4 mph H 69%30.18 inHg

Wednesday

2:00 AM

Clear night

74° 💧 None 💨 4 mph H 79%30.24 inHg

5:00 AM

Clear night

72° 💧 None 💨 3 mph H 83%30.24 inHg

8:00 AM

Mostly sunny

71° 💧 None 💨 2 mph H 87%30.30 inHg

11:00 AM

Sunny

81° 💧 None 💨 3 mph H 56%30.30 inHg

2:00 PM

Sunny

89° 💧 None 💨 1 mph H 45%30.27 inHg

5:00 PM

Sunny

92° 💧 None 💨 6 mph H 36%30.18 inHg

8:00 PM

Clear night

83° 💧 None 💨 6 mph H 45%30.18 inHg

11:00 PM

Clear night

77° 💧 None 💨 3 mph H 65%30.24 inHg

Thursday

2:00 AM

Clear night

73° 💧 None 💨 1 mph H 79%30.24 inHg

5:00 AM

Clear night

72° 💧 None 💨 4 mph H 77%30.24 inHg

8:00 AM

Sunny

70° 💧 None 💨 4 mph H 82%30.27 inHg

11:00 AM

Sunny

82° 💧 None 💨 3 mph H 52%30.27 inHg

2:00 PM

Sunny

91° 💧 None 💨 3 mph H 38%30.21 inHg

8:00 PM

Partly cloudy night

94° 💧 None 💨 2 mph H 43%30.15 inHg

Friday

2:00 AM

Partly cloudy night

84° 💧 None 💨 6 mph H 58%30.12 inHg

8:00 AM

Mostly sunny

77° 💧 None 💨 6 mph H 80%30.12 inHg

2:00 PM

Sunny

73° 💧 None 💨 6 mph H 89%30.15 inHg

8:00 PM

Mostly cloudy night

89° 💧 None 💨 5 mph H 50%30.09 inHg

Saturday

2:00 AM

Mostly clear night

84° 💧 None 💨 4 mph H 52%30.00 inHg

8:00 AM

Sunny

76° 💧 None 💨 6 mph H 66%30.03 inHg

2:00 PM

Sunny

72° 💧 None 💨 3 mph H 75%30.03 inHg

8:00 PM

Clear night

93° 💧 None 💨 7 mph H 41%29.94 inHg

Sunday

2:00 AM

Clear night

88° 💧 None 💨 4 mph H 49%29.85 inHg

8:00 AM

Mostly sunny

79° 💧 None 💨 6 mph H 69%29.88 inHg

2:00 PM

Sunny

76° 💧 None 💨 7 mph H 77%29.88 inHg

8:00 PM

Mostly clear night

96° 💧 None 💨 6 mph H 33%29.83 inHg

Monday

2:00 AM

Mostly clear night

90° 💧 None 💨 4 mph H 33%29.80 inHg

8:00 AM

Sunny

79° 💧 None 💨 6 mph H 67%29.85 inHg

2:00 PM

Sunny

76° 💧 None 💨 5 mph H 80%29.88 inHg

8:00 PM

Mostly clear night

95° 💧 None 💨 5 mph H 36%29.85 inHg

Tuesday

2:00 AM

Partly cloudy night

76° 💧 None 💨 1 mph H 95%29.85 inHg

8:00 AM

Partly cloudy

74° 💧 None 💨 5 mph H 94%29.88 inHg

2:00 PM

Partly cloudy

74° 💧 None 💨 6 mph H 93%29.94 inHg

8:00 PM

Mostly clear night

89° 💧 None 💨 11 mph H 52%29.91 inHg

Wednesday

2:00 AM

Moderate rain

74° 💧 None 💨 8 mph H 95%29.94 inHg

8:00 AM

Light rain

72° 💧 None 💨 5 mph H 96%29.97 inHg

2:00 PM

Light rain

72° 💧 None 💨 9 mph H 96%29.97 inHg

8:00 PM

Moderate rain

74° 💧 None 💨 10 mph H 96%30.00 inHg

Thursday

2:00 AM

Light rain

73° 💧 None 💨 5 mph H 98%30.00 inHg

8:00 AM

Moderate rain

70° 💧 None 💨 4 mph H 95%30.03 inHg

2:00 PM

Overcast

67° 💧 None 💨 5 mph H 89%30.06 inHg

8:00 PM

Overcast night

77° 💧 None 💨 2 mph H 60%30.03 inHg

Friday

2:00 AM

Overcast night

70° 💧 None 💨 9 mph H 70%30.03 inHg

8:00 AM

Overcast

66° 💧 None 💨 6 mph H 75%30.03 inHg

2:00 PM

Sunny

60° 💧 None 💨 8 mph H 85%30.06 inHg

8:00 PM

Mostly cloudy night

71° 💧 None 💨 8 mph H 55%30.06 inHg

Saturday

2:00 AM

Mostly clear night

65° 💧 None 💨 10 mph H 68%30.03 inHg

8:00 AM

Overcast

60° 💧 None 💨 8 mph H 83%30.06 inHg

2:00 PM

Mostly cloudy

59° 💧 None 💨 7 mph H 84%30.09 inHg

In Knoxville and, more broadly, across the state of Tennessee: This evening will feature mostly cloudy skies with hot temperatures ranging from 82 to 86 degrees Fahrenheit. There is a strong likelihood of rain, with possible accumulation around 0.05 inches. Winds will be moderate from the south at up to 12 mph, with gusts reaching 27 mph. Conditions could change quickly, especially if rain intensifies. Residents should be prepared for brief, heavy showers and gusty winds into the early night hours. Temperatures will remain warm, and the weather may influence outdoor activities during this period.

15-Day Weather Outlook for Knoxville

Sunday, Sep 13Sun Sep 13

Partly cloudy 86°/70° 💧 None 💨 7 mph

Monday, Sep 14Mon Sep 14

Light rain 88°/69° 💧 0.490 in 💨 6 mph

Tuesday, Sep 15Tue Sep 15

Sunny 92°/71° 💧 0.002 in 💨 7 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 94°/74° 💧 0.002 in 💨 6 mph

Thursday, Sep 17Thu Sep 17

Partly cloudy 94°/75° 💧 0.001 in 💨 5 mph

Friday, Sep 18Fri Sep 18

Mostly cloudy 89°/73° 💧 0.045 in 💨 6 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 93°/72° 💧 0.001 in 💨 7 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 96°/76° 💧 0.005 in 💨 7 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 95°/76° 💧 0.008 in 💨 6 mph

Tuesday, Sep 22Tue Sep 22

Mostly sunny 89°/74° 💧 0.282 in 💨 11 mph

Wednesday, Sep 23Wed Sep 23

Moderate rain 74°/72° 💧 0.654 in 💨 10 mph

Thursday, Sep 24Thu Sep 24

Moderate rain 77°/67° 💧 0.782 in 💨 5 mph

Friday, Sep 25Fri Sep 25

Overcast 71°/60° 💧 None 💨 9 mph

Saturday, Sep 26Sat Sep 26

Mostly sunny 65°/59° 💧 0.001 in 💨 10 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Knoxville

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Knoxville

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 10:00 PM

PM2.5 Fine particles Good 5,0µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 7,6µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 31,9µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 5,4µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Knoxville

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 8,1Very high 😊Good

Tomorrow UV 4,6Moderate 😊Good

Sunday UV 7,9High 🙂Fair

Monday UV 7,9High 🙂Fair

Tuesday UV 8,0Very high 🙂Fair

Wednesday UV 8,0Very high —Unavailable

Thursday UV 8,0Very high —Unavailable

Today's weather health advice Open today's recommendations.

Very high UV risk

Use SPF 50+ sunscreen, a hat and sunglasses. Seek shade and limit exposure around midday.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure.

Best in the morning or late in the day

For walking, running or cycling, prefer the early morning or late afternoon.

WIND OUTLOOK

Hourly Wind Forecast for Knoxville

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · KNOXVILLE, TENNESSEE

Tonight's Stargazing & Shooting Stars

Good observing conditions. Best local viewing window: 3:00 AM–4:00 AM.

72/100Best-hour score

BEST TIME TONIGHT 3:00 AM–4:00 AM Astronomical darkness: 9:16 PM–5:49 AM

☁ Cloud cover 39% Real hourly forecast for the best viewing hour.

☾ Moonlight 0% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 62° high at the best hour.

✦ Estimated visible meteors 1–3/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min66%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

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Forecast data for Knoxville were last refreshed today at 9:55 PM. The current forecast period extends through 13/09/2026 at 7:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.