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Current weather in Knoxville is broken clouds.

Where can I find the hourly weather forecast for Knoxville?

This page shows hourly weather forecast for Knoxville, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Knoxville updated regularly?

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

Now · 3:54 PM

Knoxville Weather & Hourly Forecast

United States · Illinois · 61448

83°F

Mostly cloudy

Feels like: 83°F

💧 Humidity 54% 🌡 Pressure 30.00 inHg 💨 Wind 9 mph 👁 Visibility 22.4 mi ☁ Clouds 76% ☀️ UV index 5.5 · Moderate 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Knoxville

Today

4:00 PM

Mostly cloudy

83° 💧 None 💨 9 mph H 54%30.00 inHg

7:00 PM

Overcast

78° 💧 None 💨 7 mph H 63%30.03 inHg

10:00 PM

Overcast night

73° 💧 None 💨 9 mph H 71%30.09 inHg

Tomorrow

1:00 AM

Partly cloudy night

67° 💧 None 💨 8 mph H 71%30.09 inHg

4:00 AM

Clear night

64° 💧 None 💨 6 mph H 86%30.12 inHg

7:00 AM

Sunny

63° 💧 None 💨 7 mph H 92%30.15 inHg

10:00 AM

Sunny

73° 💧 None 💨 9 mph H 62%30.15 inHg

1:00 PM

Mostly cloudy

80° 💧 None 💨 8 mph H 44%30.12 inHg

4:00 PM

Mostly cloudy

81° 💧 None 💨 8 mph H 43%30.09 inHg

7:00 PM

Mostly cloudy

76° 💧 None 💨 6 mph H 59%30.06 inHg

10:00 PM

Mostly cloudy night

70° 💧 None 💨 7 mph H 69%30.12 inHg

Tuesday

1:00 AM

Mostly cloudy night

68° 💧 None 💨 8 mph H 67%30.09 inHg

4:00 AM

Mostly cloudy night

65° 💧 None 💨 5 mph H 77%30.09 inHg

7:00 AM

Sunny

63° 💧 None 💨 6 mph H 83%30.09 inHg

10:00 AM

Partly cloudy

76° 💧 None 💨 8 mph H 61%30.09 inHg

1:00 PM

Mostly sunny

85° 💧 None 💨 10 mph H 43%30.06 inHg

Today

4:00 PM

Mostly cloudy

83° 💧 None 💨 9 mph H 54%30.00 inHg

5:00 PM

Overcast

82° 💧 None 💨 8 mph H 55%30.00 inHg

6:00 PM

Overcast

81° 💧 None 💨 7 mph H 57%30.00 inHg

7:00 PM

Overcast

78° 💧 None 💨 7 mph H 63%30.03 inHg

8:00 PM

Overcast night

76° 💧 None 💨 8 mph H 67%30.03 inHg

9:00 PM

Overcast night

74° 💧 None 💨 8 mph H 70%30.06 inHg

10:00 PM

Overcast night

73° 💧 None 💨 9 mph H 71%30.09 inHg

11:00 PM

Overcast night

71° 💧 None 💨 10 mph H 68%30.09 inHg

Tomorrow

12:00 AM

Partly cloudy night

69° 💧 None 💨 9 mph H 67%30.09 inHg

1:00 AM

Partly cloudy night

67° 💧 None 💨 8 mph H 71%30.09 inHg

2:00 AM

Clear night

66° 💧 None 💨 8 mph H 76%30.09 inHg

3:00 AM

Clear night

65° 💧 None 💨 7 mph H 82%30.09 inHg

4:00 AM

Clear night

64° 💧 None 💨 6 mph H 86%30.12 inHg

5:00 AM

Clear night

64° 💧 None 💨 6 mph H 90%30.12 inHg

6:00 AM

Clear night

63° 💧 None 💨 6 mph H 92%30.15 inHg

7:00 AM

Sunny

63° 💧 None 💨 7 mph H 92%30.15 inHg

8:00 AM

Mostly sunny

65° 💧 None 💨 7 mph H 85%30.15 inHg

9:00 AM

Partly cloudy

70° 💧 None 💨 7 mph H 74%30.15 inHg

10:00 AM

Sunny

73° 💧 None 💨 9 mph H 62%30.15 inHg

11:00 AM

Sunny

76° 💧 None 💨 10 mph H 52%30.15 inHg

12:00 PM

Mostly sunny

78° 💧 None 💨 9 mph H 47%30.15 inHg

1:00 PM

Mostly cloudy

80° 💧 None 💨 8 mph H 44%30.12 inHg

2:00 PM

Mostly sunny

81° 💧 None 💨 7 mph H 42%30.12 inHg

3:00 PM

Partly cloudy

81° 💧 None 💨 7 mph H 42%30.09 inHg

4:00 PM

Mostly cloudy

81° 💧 None 💨 8 mph H 43%30.09 inHg

5:00 PM

Mostly cloudy

80° 💧 None 💨 9 mph H 46%30.06 inHg

6:00 PM

Mostly cloudy

79° 💧 None 💨 9 mph H 50%30.06 inHg

7:00 PM

Mostly cloudy

76° 💧 None 💨 6 mph H 59%30.06 inHg

8:00 PM

Mostly cloudy night

73° 💧 None 💨 6 mph H 65%30.06 inHg

9:00 PM

Partly cloudy night

71° 💧 None 💨 7 mph H 67%30.09 inHg

10:00 PM

Mostly cloudy night

70° 💧 None 💨 7 mph H 69%30.12 inHg

11:00 PM

Mostly cloudy night

70° 💧 None 💨 8 mph H 67%30.12 inHg

Tuesday

12:00 AM

Overcast night

69° 💧 None 💨 8 mph H 66%30.12 inHg

1:00 AM

Mostly cloudy night

68° 💧 None 💨 8 mph H 67%30.09 inHg

2:00 AM

Overcast night

67° 💧 None 💨 7 mph H 70%30.09 inHg

3:00 AM

Mostly cloudy night

66° 💧 None 💨 7 mph H 73%30.09 inHg

4:00 AM

Mostly cloudy night

65° 💧 None 💨 5 mph H 77%30.09 inHg

5:00 AM

Mostly cloudy night

64° 💧 None 💨 5 mph H 80%30.09 inHg

6:00 AM

Mostly cloudy night

63° 💧 None 💨 5 mph H 82%30.09 inHg

7:00 AM

Sunny

63° 💧 None 💨 6 mph H 83%30.09 inHg

8:00 AM

Sunny

67° 💧 None 💨 6 mph H 78%30.09 inHg

9:00 AM

Mostly cloudy

71° 💧 None 💨 6 mph H 69%30.09 inHg

10:00 AM

Partly cloudy

76° 💧 None 💨 8 mph H 61%30.09 inHg

11:00 AM

Mostly sunny

80° 💧 None 💨 9 mph H 52%30.09 inHg

12:00 PM

Mostly sunny

83° 💧 None 💨 10 mph H 46%30.09 inHg

1:00 PM

Mostly sunny

85° 💧 None 💨 10 mph H 43%30.06 inHg

2:00 PM

Partly cloudy

87° 💧 None 💨 10 mph H 41%30.03 inHg

3:00 PM

Sunny

88° 💧 None 💨 10 mph H 41%30.03 inHg

4:00 PM

Sunny

88° 💧 None 💨 10 mph H 41%30.00 inHg

5:00 PM

Sunny

87° 💧 None 💨 10 mph H 42%30.00 inHg

6:00 PM

Sunny

86° 💧 None 💨 10 mph H 45%29.97 inHg

7:00 PM

Sunny

83° 💧 None 💨 9 mph H 50%29.97 inHg

8:00 PM

Clear night

81° 💧 None 💨 9 mph H 52%29.97 inHg

9:00 PM

Mostly clear night

79° 💧 None 💨 8 mph H 53%30.00 inHg

10:00 PM

Mostly cloudy night

78° 💧 None 💨 8 mph H 52%30.00 inHg

11:00 PM

Partly cloudy night

78° 💧 None 💨 8 mph H 49%30.00 inHg

Wednesday

12:00 AM

Mostly cloudy night

77° 💧 None 💨 9 mph H 49%29.97 inHg

1:00 AM

Partly cloudy night

77° 💧 None 💨 9 mph H 47%29.97 inHg

2:00 AM

Mostly cloudy night

77° 💧 None 💨 10 mph H 47%29.97 inHg

3:00 AM

Overcast night

76° 💧 None 💨 10 mph H 47%29.94 inHg

4:00 AM

Mostly cloudy night

76° 💧 None 💨 10 mph H 49%29.94 inHg

5:00 AM

Mostly cloudy night

76° 💧 None 💨 9 mph H 51%29.94 inHg

6:00 AM

Overcast night

75° 💧 0.002 in 💨 4 mph H 54%30.00 inHg

7:00 AM

Mostly cloudy

73° 💧 0.001 in 💨 1 mph H 65%29.97 inHg

10:00 AM

Light rain

72° 💧 None 💨 7 mph H 92%30.00 inHg

1:00 PM

Mostly cloudy

83° 💧 None 💨 9 mph H 68%29.97 inHg

4:00 PM

Light rain

80° 💧 None 💨 8 mph H 80%29.94 inHg

7:00 PM

Overcast

77° 💧 None 💨 4 mph H 91%29.94 inHg

10:00 PM

Overcast night

74° 💧 None 💨 3 mph H 97%29.94 inHg

Thursday

1:00 AM

Mostly cloudy night

71° 💧 None 💨 5 mph H 92%29.97 inHg

4:00 AM

Overcast night

67° 💧 None 💨 6 mph H 85%29.97 inHg

7:00 AM

Partly cloudy

64° 💧 None 💨 5 mph H 89%30.00 inHg

10:00 AM

Sunny

73° 💧 None 💨 8 mph H 61%30.00 inHg

1:00 PM

Sunny

78° 💧 None 💨 9 mph H 44%30.00 inHg

4:00 PM

Sunny

79° 💧 None 💨 9 mph H 39%29.94 inHg

7:00 PM

Sunny

72° 💧 None 💨 3 mph H 60%29.94 inHg

10:00 PM

Clear night

65° 💧 None 💨 3 mph H 76%29.97 inHg

Friday

1:00 AM

Clear night

62° 💧 None 💨 4 mph H 85%29.97 inHg

4:00 AM

Clear night

60° 💧 None 💨 4 mph H 86%29.97 inHg

7:00 AM

Sunny

59° 💧 None 💨 5 mph H 87%29.97 inHg

10:00 AM

Sunny

73° 💧 None 💨 7 mph H 53%29.97 inHg

1:00 PM

Sunny

79° 💧 None 💨 7 mph H 41%29.91 inHg

4:00 PM

Sunny

81° 💧 None 💨 9 mph H 40%29.85 inHg

7:00 PM

Sunny

74° 💧 None 💨 7 mph H 56%29.83 inHg

10:00 PM

Overcast night

69° 💧 None 💨 8 mph H 71%29.85 inHg

Saturday

1:00 AM

Partly cloudy night

66° 💧 None 💨 7 mph H 77%29.83 inHg

4:00 AM

Clear night

66° 💧 None 💨 8 mph H 78%29.80 inHg

7:00 AM

Overcast

65° 💧 None 💨 11 mph H 94%29.85 inHg

1:00 PM

Partly cloudy

81° 💧 None 💨 7 mph H 62%29.88 inHg

7:00 PM

Sunny

77° 💧 None 💨 4 mph H 73%29.91 inHg

Sunday

1:00 AM

Mostly cloudy night

67° 💧 None 💨 6 mph H 88%30.00 inHg

7:00 AM

Mostly cloudy

67° 💧 None 💨 7 mph H 90%30.03 inHg

1:00 PM

Overcast

85° 💧 None 💨 9 mph H 62%29.97 inHg

7:00 PM

Light thunderstorms

77° 💧 None 💨 8 mph H 90%29.97 inHg

Monday

1:00 AM

Mostly cloudy night

72° 💧 None 💨 9 mph H 96%29.97 inHg

7:00 AM

Mostly sunny

71° 💧 None 💨 6 mph H 98%29.97 inHg

1:00 PM

Light rain

91° 💧 None 💨 8 mph H 54%29.91 inHg

7:00 PM

Sunny

87° 💧 None 💨 12 mph H 58%29.83 inHg

Tuesday

1:00 AM

Mostly cloudy night

82° 💧 None 💨 13 mph H 62%29.85 inHg

7:00 AM

Overcast

70° 💧 None 💨 13 mph H 84%29.97 inHg

1:00 PM

Overcast

73° 💧 None 💨 9 mph H 50%30.12 inHg

7:00 PM

Mostly cloudy

68° 💧 None 💨 7 mph H 59%30.15 inHg

Wednesday

1:00 AM

Mostly cloudy night

59° 💧 None 💨 4 mph H 89%30.27 inHg

7:00 AM

Sunny

56° 💧 None 💨 6 mph H 93%30.33 inHg

1:00 PM

Sunny

75° 💧 None 💨 6 mph H 48%30.33 inHg

7:00 PM

Overcast

71° 💧 None 💨 5 mph H 62%30.30 inHg

Thursday

1:00 AM

Clear night

63° 💧 None 💨 8 mph H 74%30.33 inHg

7:00 AM

Sunny

59° 💧 None 💨 6 mph H 92%30.36 inHg

1:00 PM

Partly cloudy

78° 💧 None 💨 4 mph H 48%30.33 inHg

7:00 PM

Sunny

74° 💧 None 💨 6 mph H 55%30.27 inHg

Friday

1:00 AM

Clear night

63° 💧 None 💨 7 mph H 83%30.33 inHg

7:00 AM

Sunny

58° 💧 None 💨 8 mph H 94%30.33 inHg

1:00 PM

Mostly sunny

72° 💧 None 💨 17 mph H 52%30.36 inHg

7:00 PM

Sunny

60° 💧 None 💨 16 mph H 48%30.39 inHg

Saturday

1:00 AM

Clear night

52° 💧 None 💨 7 mph H 63%30.45 inHg

7:00 AM

Sunny

48° 💧 None 💨 9 mph H 67%30.45 inHg

1:00 PM

Mostly sunny

64° 💧 None 💨 8 mph H 38%30.42 inHg

7:00 PM

Partly cloudy

61° 💧 None 💨 10 mph H 51%30.33 inHg

Sunday

1:00 AM

Clear night

52° 💧 None 💨 5 mph H 70%30.36 inHg

7:00 AM

Sunny

47° 💧 None 💨 5 mph H 84%30.39 inHg

1:00 PM

Sunny

65° 💧 None 💨 8 mph H 35%30.33 inHg

7:00 PM

Sunny

61° 💧 None 💨 5 mph H 45%30.24 inHg

Monday

1:00 AM

Clear night

52° 💧 None 💨 6 mph H 67%30.27 inHg

7:00 AM

Sunny

48° 💧 None 💨 5 mph H 79%30.30 inHg

In Knoxville and, more broadly, across the state of Illinois: As the afternoon progresses into the evening, skies will feature a mix of sun and clouds, creating a pleasant and mild atmosphere. Temperatures are expected to remain steady, ranging between 69 and 83 degrees Fahrenheit. Winds will be moderate from the east, with sustained speeds around 10 mph and occasional gusts reaching up to 18 mph. No precipitation is anticipated during this time, making for a comfortable evening. Conditions will be relatively calm, with the gentle eastward breeze adding a slight coolness as the night sets in. Overall, it should be a pleasant and mild evening with no significant weather concerns.

15-Day Weather Outlook for Knoxville

TomorrowTomorrow

Overcast 81°/63° 💧 None 💨 10 mph

Tuesday, Sep 8Tue Sep 8

Mostly cloudy 88°/63° 💧 None 💨 10 mph

Wednesday, Sep 9Wed Sep 9

Light rain 83°/72° 💧 0.142 in 💨 10 mph

Thursday, Sep 10Thu Sep 10

Overcast 79°/64° 💧 0.017 in 💨 9 mph

Friday, Sep 11Fri Sep 11

Sunny 81°/59° 💧 None 💨 9 mph

Saturday, Sep 12Sat Sep 12

Overcast 81°/65° 💧 0.292 in 💨 11 mph

Sunday, Sep 13Sun Sep 13

Mostly cloudy 85°/67° 💧 0.001 in 💨 9 mph

Monday, Sep 14Mon Sep 14

Light thunderstorms 91°/71° 💧 0.238 in 💨 9 mph

Tuesday, Sep 15Tue Sep 15

Mostly cloudy 87°/70° 💧 0.028 in 💨 13 mph

Wednesday, Sep 16Wed Sep 16

Mostly cloudy 75°/56° 💧 None 💨 7 mph

Thursday, Sep 17Thu Sep 17

Overcast 78°/59° 💧 None 💨 8 mph

Friday, Sep 18Fri Sep 18

Mostly sunny 74°/58° 💧 None 💨 17 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 64°/48° 💧 0.001 in 💨 16 mph

Sunday, Sep 20Sun Sep 20

Partly cloudy 65°/47° 💧 None 💨 10 mph

Monday, Sep 21Mon Sep 21

Sunny 61°/48° 💧 0.001 in 💨 6 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

Fair

Nearest forecast value 4:00 PM

PM2.5 Fine particles Good 7,3µg/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 7,5µg/m³

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

O₃ Ozone Fair 91,6µg/m³

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

NO₂ Nitrogen dioxide Good 0,7µg/m³

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

Air quality is acceptable for most people.

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 7,4High 🙂Fair

Tomorrow UV 7,3High 😐Moderate

Tuesday UV 7,3High 😐Moderate

Wednesday UV 3,8Moderate 🙂Fair

Thursday UV 6,6High 🙂Fair

Friday UV 7,0High —Unavailable

Saturday UV 7,0High —Unavailable

Hourly UV index today

4:00 PMUV 3,5 5:00 PMUV 1,7 6:00 PMUV 0,5 7:00 PMUV 0,0

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

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Stay hydrated

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

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Knoxville

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · KNOXVILLE, ILLINOIS

Tonight's Stargazing & Shooting Stars

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

99/100Best-hour score

BEST TIME TONIGHT 3:00 AM–4:00 AM Astronomical darkness: 9:00 PM–4:59 AM

☁ Cloud cover 1% Real hourly forecast for the best viewing hour.

☾ Moonlight 21% Waning Crescent · Moon about 6° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 66° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min74%

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

Explore current conditions and forecasts for other locations.

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Forecast data for Knoxville were last refreshed today at 3:54 PM. The current forecast period extends through 08/09/2026 at 1:00 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.