What is the weather in McLean right now?

Current weather in McLean is overcast clouds.

Where can I find the hourly weather forecast for McLean?

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

Is the weather forecast for McLean updated regularly?

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

Now · 11:29 PM

McLean Weather & Hourly Forecast

United States · Illinois · 61754

69°F

Overcast night

Feels like: 67°F

💧 Humidity 67% 🌡 Pressure 30.09 inHg 💨 Wind 8 mph 👁 Visibility 20.0 mi ☁ Clouds 98% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for McLean

Tomorrow

12:00 AM

Overcast night

68° 💧 None 💨 8 mph H 73%30.09 inHg

3:00 AM

Mostly cloudy night

66° 💧 None 💨 7 mph H 80%30.09 inHg

6:00 AM

Clear night

63° 💧 None 💨 7 mph H 85%30.15 inHg

9:00 AM

Sunny

69° 💧 None 💨 8 mph H 71%30.15 inHg

12:00 PM

Sunny

77° 💧 None 💨 9 mph H 51%30.15 inHg

3:00 PM

Sunny

81° 💧 None 💨 7 mph H 48%30.09 inHg

6:00 PM

Sunny

79° 💧 None 💨 8 mph H 50%30.06 inHg

9:00 PM

Clear night

73° 💧 None 💨 10 mph H 56%30.09 inHg

Tuesday

12:00 AM

Clear night

68° 💧 None 💨 6 mph H 68%30.12 inHg

3:00 AM

Overcast night

66° 💧 None 💨 6 mph H 76%30.09 inHg

6:00 AM

Mostly cloudy night

64° 💧 None 💨 5 mph H 87%30.09 inHg

9:00 AM

Partly cloudy

72° 💧 None 💨 5 mph H 73%30.12 inHg

12:00 PM

Partly cloudy

84° 💧 None 💨 8 mph H 44%30.09 inHg

3:00 PM

Sunny

88° 💧 None 💨 7 mph H 36%30.06 inHg

6:00 PM

Sunny

86° 💧 None 💨 4 mph H 44%30.00 inHg

9:00 PM

Clear night

78° 💧 None 💨 6 mph H 44%30.03 inHg

Tomorrow

12:00 AM

Overcast night

68° 💧 None 💨 8 mph H 73%30.09 inHg

1:00 AM

Overcast night

68° 💧 None 💨 8 mph H 76%30.09 inHg

2:00 AM

Mostly cloudy night

67° 💧 None 💨 7 mph H 79%30.09 inHg

3:00 AM

Mostly cloudy night

66° 💧 None 💨 7 mph H 80%30.09 inHg

4:00 AM

Partly cloudy night

65° 💧 None 💨 7 mph H 82%30.12 inHg

5:00 AM

Clear night

64° 💧 None 💨 7 mph H 84%30.12 inHg

6:00 AM

Clear night

63° 💧 None 💨 7 mph H 85%30.15 inHg

7:00 AM

Sunny

63° 💧 None 💨 7 mph H 85%30.15 inHg

8:00 AM

Sunny

66° 💧 None 💨 8 mph H 80%30.15 inHg

9:00 AM

Sunny

69° 💧 None 💨 8 mph H 71%30.15 inHg

10:00 AM

Sunny

73° 💧 None 💨 10 mph H 61%30.15 inHg

11:00 AM

Sunny

75° 💧 None 💨 10 mph H 53%30.15 inHg

12:00 PM

Sunny

77° 💧 None 💨 9 mph H 51%30.15 inHg

1:00 PM

Mostly sunny

79° 💧 None 💨 9 mph H 50%30.12 inHg

2:00 PM

Mostly sunny

80° 💧 None 💨 7 mph H 49%30.12 inHg

3:00 PM

Sunny

81° 💧 None 💨 7 mph H 48%30.09 inHg

4:00 PM

Sunny

81° 💧 None 💨 7 mph H 47%30.09 inHg

5:00 PM

Sunny

81° 💧 None 💨 8 mph H 47%30.09 inHg

6:00 PM

Sunny

79° 💧 None 💨 8 mph H 50%30.06 inHg

7:00 PM

Mostly sunny

76° 💧 None 💨 7 mph H 55%30.06 inHg

8:00 PM

Clear night

74° 💧 None 💨 8 mph H 55%30.06 inHg

9:00 PM

Clear night

73° 💧 None 💨 10 mph H 56%30.09 inHg

10:00 PM

Clear night

71° 💧 None 💨 8 mph H 59%30.12 inHg

11:00 PM

Clear night

69° 💧 None 💨 6 mph H 65%30.12 inHg

Tuesday

12:00 AM

Clear night

68° 💧 None 💨 6 mph H 68%30.12 inHg

1:00 AM

Mostly clear night

68° 💧 None 💨 7 mph H 69%30.12 inHg

2:00 AM

Partly cloudy night

67° 💧 None 💨 6 mph H 73%30.09 inHg

3:00 AM

Overcast night

66° 💧 None 💨 6 mph H 76%30.09 inHg

4:00 AM

Mostly cloudy night

66° 💧 None 💨 6 mph H 79%30.09 inHg

5:00 AM

Mostly cloudy night

65° 💧 None 💨 5 mph H 83%30.09 inHg

6:00 AM

Mostly cloudy night

64° 💧 None 💨 5 mph H 87%30.09 inHg

7:00 AM

Partly cloudy

64° 💧 None 💨 6 mph H 88%30.12 inHg

8:00 AM

Partly cloudy

68° 💧 None 💨 6 mph H 82%30.12 inHg

9:00 AM

Partly cloudy

72° 💧 None 💨 5 mph H 73%30.12 inHg

10:00 AM

Mostly cloudy

77° 💧 None 💨 6 mph H 65%30.12 inHg

11:00 AM

Mostly cloudy

81° 💧 None 💨 7 mph H 54%30.12 inHg

12:00 PM

Partly cloudy

84° 💧 None 💨 8 mph H 44%30.09 inHg

1:00 PM

Mostly sunny

86° 💧 None 💨 7 mph H 41%30.09 inHg

2:00 PM

Mostly sunny

87° 💧 None 💨 7 mph H 38%30.06 inHg

3:00 PM

Sunny

88° 💧 None 💨 7 mph H 36%30.06 inHg

4:00 PM

Sunny

88° 💧 None 💨 8 mph H 36%30.03 inHg

5:00 PM

Sunny

88° 💧 None 💨 6 mph H 36%30.03 inHg

6:00 PM

Sunny

86° 💧 None 💨 4 mph H 44%30.00 inHg

7:00 PM

Sunny

81° 💧 None 💨 5 mph H 48%30.00 inHg

8:00 PM

Clear night

79° 💧 None 💨 6 mph H 46%30.00 inHg

9:00 PM

Clear night

78° 💧 None 💨 6 mph H 44%30.03 inHg

10:00 PM

Clear night

77° 💧 None 💨 7 mph H 38%30.03 inHg

11:00 PM

Mostly clear night

76° 💧 None 💨 7 mph H 43%30.03 inHg

Wednesday

12:00 AM

Partly cloudy night

75° 💧 None 💨 7 mph H 50%30.03 inHg

1:00 AM

Mostly cloudy night

74° 💧 None 💨 8 mph H 54%30.03 inHg

2:00 AM

Mostly cloudy night

74° 💧 None 💨 8 mph H 56%30.00 inHg

3:00 AM

Mostly cloudy night

75° 💧 None 💨 10 mph H 56%30.00 inHg

4:00 AM

Mostly cloudy night

75° 💧 None 💨 11 mph H 58%29.97 inHg

5:00 AM

Mostly cloudy night

76° 💧 None 💨 10 mph H 60%30.00 inHg

6:00 AM

Partly cloudy night

75° 💧 None 💨 11 mph H 62%30.00 inHg

7:00 AM

Mostly cloudy

75° 💧 None 💨 11 mph H 64%30.00 inHg

4:00 PM

Mostly sunny

89° 💧 None 💨 9 mph H 49%29.97 inHg

7:00 PM

Moderate rain

81° 💧 None 💨 8 mph H 71%29.97 inHg

10:00 PM

Light rain

74° 💧 None 💨 3 mph H 97%30.00 inHg

Thursday

1:00 AM

Light rain

73° 💧 None 💨 4 mph H 97%29.97 inHg

4:00 AM

Overcast night

72° 💧 None 💨 4 mph H 99%29.97 inHg

7:00 AM

Overcast

68° 💧 None 💨 6 mph H 95%30.00 inHg

10:00 AM

Mostly sunny

72° 💧 None 💨 8 mph H 76%30.03 inHg

1:00 PM

Sunny

78° 💧 None 💨 8 mph H 58%30.00 inHg

4:00 PM

Mostly sunny

79° 💧 None 💨 8 mph H 48%29.97 inHg

7:00 PM

Sunny

72° 💧 None 💨 3 mph H 71%29.94 inHg

10:00 PM

Clear night

66° 💧 None 💨 4 mph H 78%29.97 inHg

Friday

1:00 AM

Clear night

63° 💧 None 💨 5 mph H 81%29.97 inHg

4:00 AM

Clear night

61° 💧 None 💨 4 mph H 88%29.97 inHg

7:00 AM

Sunny

60° 💧 None 💨 6 mph H 89%29.97 inHg

10:00 AM

Sunny

71° 💧 None 💨 6 mph H 71%29.97 inHg

1:00 PM

Sunny

78° 💧 None 💨 9 mph H 54%29.91 inHg

4:00 PM

Sunny

80° 💧 None 💨 8 mph H 48%29.83 inHg

7:00 PM

Sunny

73° 💧 None 💨 4 mph H 70%29.83 inHg

10:00 PM

Clear night

70° 💧 None 💨 8 mph H 69%29.83 inHg

Saturday

1:00 AM

Mostly clear night

69° 💧 None 💨 9 mph H 71%29.80 inHg

4:00 AM

Overcast night

70° 💧 None 💨 8 mph H 82%29.80 inHg

7:00 AM

Mostly cloudy

70° 💧 None 💨 5 mph H 94%29.83 inHg

10:00 AM

Mostly sunny

80° 💧 None 💨 8 mph H 78%29.85 inHg

1:00 PM

Mostly cloudy

85° 💧 None 💨 7 mph H 63%29.85 inHg

7:00 PM

Sunny

82° 💧 None 💨 5 mph H 66%29.88 inHg

Sunday

1:00 AM

Clear night

79° 💧 None 💨 2 mph H 79%29.91 inHg

7:00 AM

Partly cloudy

70° 💧 None 💨 5 mph H 92%29.97 inHg

1:00 PM

Partly cloudy

67° 💧 None 💨 5 mph H 95%30.03 inHg

7:00 PM

Overcast

87° 💧 None 💨 6 mph H 64%30.00 inHg

Monday

1:00 AM

Partly cloudy night

83° 💧 None 💨 3 mph H 75%29.94 inHg

7:00 AM

Mostly cloudy

77° 💧 None 💨 6 mph H 77%30.00 inHg

1:00 PM

Mostly sunny

76° 💧 None 💨 8 mph H 79%30.00 inHg

7:00 PM

Mostly sunny

92° 💧 None 💨 9 mph H 53%29.94 inHg

Tuesday

1:00 AM

Mostly clear night

86° 💧 None 💨 7 mph H 64%29.85 inHg

7:00 AM

Sunny

82° 💧 None 💨 15 mph H 56%29.88 inHg

1:00 PM

Mostly cloudy

76° 💧 None 💨 7 mph H 68%29.94 inHg

7:00 PM

Mostly sunny

79° 💧 None 💨 9 mph H 55%30.06 inHg

Wednesday

1:00 AM

Mostly cloudy night

73° 💧 None 💨 6 mph H 57%30.12 inHg

7:00 AM

Overcast

64° 💧 None 💨 7 mph H 77%30.24 inHg

1:00 PM

Overcast

60° 💧 None 💨 7 mph H 90%30.30 inHg

7:00 PM

Sunny

77° 💧 None 💨 7 mph H 51%30.33 inHg

Thursday

1:00 AM

Overcast night

73° 💧 None 💨 4 mph H 60%30.27 inHg

7:00 AM

Sunny

65° 💧 None 💨 8 mph H 73%30.33 inHg

1:00 PM

Sunny

61° 💧 None 💨 6 mph H 87%30.33 inHg

7:00 PM

Overcast

78° 💧 None 💨 6 mph H 47%30.33 inHg

Friday

1:00 AM

Clear night

73° 💧 None 💨 4 mph H 60%30.24 inHg

7:00 AM

Sunny

64° 💧 None 💨 8 mph H 63%30.27 inHg

1:00 PM

Mostly sunny

59° 💧 None 💨 8 mph H 85%30.30 inHg

7:00 PM

Partly cloudy

76° 💧 None 💨 15 mph H 43%30.27 inHg

Saturday

1:00 AM

Clear night

65° 💧 None 💨 16 mph H 50%30.30 inHg

7:00 AM

Mostly sunny

55° 💧 None 💨 10 mph H 63%30.39 inHg

1:00 PM

Overcast

53° 💧 None 💨 9 mph H 62%30.42 inHg

7:00 PM

Overcast

62° 💧 None 💨 10 mph H 50%30.39 inHg

Sunday

1:00 AM

Clear night

61° 💧 None 💨 7 mph H 51%30.33 inHg

7:00 AM

Sunny

51° 💧 None 💨 8 mph H 67%30.33 inHg

1:00 PM

Sunny

47° 💧 None 💨 5 mph H 79%30.39 inHg

7:00 PM

Clear night

64° 💧 None 💨 7 mph H 42%30.33 inHg

Monday

1:00 AM

Clear night

61° 💧 None 💨 4 mph H 50%30.24 inHg

7:00 AM

Sunny

53° 💧 None 💨 7 mph H 63%30.27 inHg

1:00 PM

Sunny

48° 💧 None 💨 5 mph H 81%30.30 inHg

In McLean and, more broadly, across the state of Illinois: The evening will feature a mix of sun and clouds, with temperatures remaining mild to warm, ranging from 76 to 78 degrees Fahrenheit. Winds will be light and coming from the east, with speeds up to 8 mph, occasionally gusting to 18 mph. No precipitation is expected during this time, making for a relatively calm and pleasant evening. The weather should remain stable through the next few hours, with comfortable conditions and no significant weather disturbances anticipated. Overall, it’s a good evening for outdoor activities or relaxing outside. Temperatures will gradually stay steady, and the breeze will provide a gentle refreshment as the night progresses.

15-Day Weather Outlook for McLean

TomorrowTomorrow

Overcast 81°/63° 💧 None 💨 10 mph

Tuesday, Sep 8Tue Sep 8

Mostly sunny 88°/64° 💧 None 💨 10 mph

Wednesday, Sep 9Wed Sep 9

Light rain 88°/74° 💧 0.017 in 💨 14 mph

Thursday, Sep 10Thu Sep 10

Light thunderstorms 78°/69° 💧 1.175 in 💨 9 mph

Friday, Sep 11Fri Sep 11

Sunny 78°/58° 💧 None 💨 6 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 82°/65° 💧 None 💨 7 mph

Sunday, Sep 13Sun Sep 13

Overcast 87°/67° 💧 0.001 in 💨 6 mph

Monday, Sep 14Mon Sep 14

Partly cloudy 92°/76° 💧 0.005 in 💨 9 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 86°/76° 💧 0.027 in 💨 15 mph

Wednesday, Sep 16Wed Sep 16

Mostly cloudy 77°/60° 💧 None 💨 7 mph

Thursday, Sep 17Thu Sep 17

Overcast 78°/61° 💧 None 💨 8 mph

Friday, Sep 18Fri Sep 18

Mostly sunny 76°/59° 💧 None 💨 15 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 65°/53° 💧 0.012 in 💨 16 mph

Sunday, Sep 20Sun Sep 20

Sunny 64°/47° 💧 None 💨 8 mph

Monday, Sep 21Mon Sep 21

Sunny 61°/48° 💧 None 💨 7 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in McLean

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for McLean

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 12:00 AM

PM2.5 Fine particles Good 3,9µg/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 4,3µg/m³

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

O₃ Ozone Fair 81,0µg/m³

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

NO₂ Nitrogen dioxide Good 2,4µg/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 McLean

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 7,8High —Unavailable

Tomorrow UV 7,7High 😐Moderate

Tuesday UV 7,3High 😐Moderate

Wednesday UV 7,0High 🙂Fair

Thursday UV 6,7High 🙂Fair

Friday UV 7,0High —Unavailable

Saturday UV 8,0Very high —Unavailable

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.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

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 McLean

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · MCLEAN, ILLINOIS

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

98/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 8:55 PM–4:56 AM

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

☾ Moonlight 21% Waning Crescent · Moon about 28° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 89° high at the best hour.

✦ Estimated visible meteors 2–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min77%

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 McLean were last refreshed today at 11:29 PM. The current forecast period extends through 08/09/2026 at 9:00 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.