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Current weather in Monticello is broken clouds.

Where can I find the hourly weather forecast for Monticello?

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

Is the weather forecast for Monticello updated regularly?

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

Now · 11:53 PM

Monticello Weather & Hourly Forecast

United States · Illinois · 61856

68°F

Mostly cloudy night

Feels like: 68°F

💧 Humidity 83% 🌡 Pressure 30.12 inHg 💨 Wind 6 mph 👁 Visibility 6.2 mi ☁ Clouds 61% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:18 AM 🌇 Sunset 7:33 PM

Hourly Forecast for Monticello

Tomorrow

12:00 AM

Mostly cloudy night

68° 💧 None 💨 6 mph H 83%30.12 inHg

3:00 AM

Mostly cloudy night

66° 💧 None 💨 6 mph H 88%30.12 inHg

6:00 AM

Mostly cloudy night

62° 💧 None 💨 6 mph H 88%30.12 inHg

9:00 AM

Overcast

72° 💧 None 💨 7 mph H 74%30.15 inHg

12:00 PM

Overcast

80° 💧 None 💨 8 mph H 61%30.12 inHg

3:00 PM

Overcast

80° 💧 None 💨 10 mph H 62%30.03 inHg

6:00 PM

Overcast

80° 💧 None 💨 7 mph H 71%30.00 inHg

9:00 PM

Mostly cloudy night

72° 💧 None 💨 9 mph H 69%30.00 inHg

Sunday

12:00 AM

Mostly cloudy night

70° 💧 None 💨 8 mph H 71%30.00 inHg

3:00 AM

Partly cloudy night

69° 💧 None 💨 9 mph H 70%29.97 inHg

6:00 AM

Mostly cloudy night

67° 💧 None 💨 9 mph H 75%30.00 inHg

9:00 AM

Overcast

75° 💧 None 💨 9 mph H 71%30.03 inHg

12:00 PM

Overcast

87° 💧 None 💨 13 mph H 49%30.00 inHg

3:00 PM

Overcast

89° 💧 None 💨 13 mph H 45%29.94 inHg

6:00 PM

Overcast

83° 💧 None 💨 10 mph H 54%29.91 inHg

9:00 PM

Overcast night

78° 💧 None 💨 7 mph H 50%29.94 inHg

Tomorrow

12:00 AM

Mostly cloudy night

68° 💧 None 💨 6 mph H 83%30.12 inHg

1:00 AM

Mostly cloudy night

67° 💧 None 💨 6 mph H 84%30.12 inHg

2:00 AM

Partly cloudy night

67° 💧 None 💨 8 mph H 86%30.12 inHg

3:00 AM

Mostly cloudy night

66° 💧 None 💨 6 mph H 88%30.12 inHg

4:00 AM

Mostly cloudy night

64° 💧 None 💨 6 mph H 89%30.12 inHg

5:00 AM

Mostly cloudy night

63° 💧 None 💨 8 mph H 89%30.09 inHg

6:00 AM

Mostly cloudy night

62° 💧 None 💨 6 mph H 88%30.12 inHg

7:00 AM

Mostly cloudy

65° 💧 None 💨 6 mph H 87%30.15 inHg

8:00 AM

Overcast

68° 💧 None 💨 5 mph H 82%30.15 inHg

9:00 AM

Overcast

72° 💧 None 💨 7 mph H 74%30.15 inHg

10:00 AM

Overcast

75° 💧 None 💨 7 mph H 68%30.15 inHg

11:00 AM

Overcast

78° 💧 None 💨 7 mph H 69%30.15 inHg

12:00 PM

Overcast

80° 💧 None 💨 8 mph H 61%30.12 inHg

1:00 PM

Overcast

81° 💧 None 💨 8 mph H 56%30.09 inHg

2:00 PM

Overcast

81° 💧 None 💨 8 mph H 55%30.06 inHg

3:00 PM

Overcast

80° 💧 None 💨 10 mph H 62%30.03 inHg

4:00 PM

Overcast

80° 💧 None 💨 8 mph H 68%30.03 inHg

5:00 PM

Overcast

81° 💧 None 💨 7 mph H 69%30.03 inHg

6:00 PM

Overcast

80° 💧 None 💨 7 mph H 71%30.00 inHg

7:00 PM

Overcast

78° 💧 None 💨 8 mph H 77%30.00 inHg

8:00 PM

Mostly cloudy night

75° 💧 None 💨 9 mph H 72%30.00 inHg

9:00 PM

Mostly cloudy night

72° 💧 None 💨 9 mph H 69%30.00 inHg

10:00 PM

Partly cloudy night

71° 💧 None 💨 8 mph H 71%30.00 inHg

11:00 PM

Mostly cloudy night

71° 💧 None 💨 9 mph H 70%30.00 inHg

Sunday

12:00 AM

Mostly cloudy night

70° 💧 None 💨 8 mph H 71%30.00 inHg

1:00 AM

Partly cloudy night

69° 💧 None 💨 8 mph H 71%30.00 inHg

2:00 AM

Partly cloudy night

69° 💧 None 💨 8 mph H 72%30.00 inHg

3:00 AM

Partly cloudy night

69° 💧 None 💨 9 mph H 70%29.97 inHg

4:00 AM

Partly cloudy night

68° 💧 None 💨 7 mph H 70%30.00 inHg

5:00 AM

Partly cloudy night

67° 💧 None 💨 8 mph H 75%30.00 inHg

6:00 AM

Mostly cloudy night

67° 💧 None 💨 9 mph H 75%30.00 inHg

7:00 AM

Mostly cloudy

68° 💧 None 💨 8 mph H 78%30.03 inHg

8:00 AM

Overcast

71° 💧 None 💨 7 mph H 77%30.03 inHg

9:00 AM

Overcast

75° 💧 None 💨 9 mph H 71%30.03 inHg

10:00 AM

Overcast

81° 💧 None 💨 11 mph H 59%30.03 inHg

11:00 AM

Overcast

86° 💧 None 💨 12 mph H 52%30.00 inHg

12:00 PM

Overcast

87° 💧 None 💨 13 mph H 49%30.00 inHg

1:00 PM

Overcast

89° 💧 None 💨 15 mph H 47%29.97 inHg

2:00 PM

Overcast

88° 💧 None 💨 14 mph H 45%29.97 inHg

3:00 PM

Overcast

89° 💧 None 💨 13 mph H 45%29.94 inHg

4:00 PM

Overcast

89° 💧 None 💨 13 mph H 44%29.91 inHg

5:00 PM

Overcast

87° 💧 None 💨 11 mph H 48%29.91 inHg

6:00 PM

Overcast

83° 💧 None 💨 10 mph H 54%29.91 inHg

7:00 PM

Overcast

80° 💧 None 💨 5 mph H 52%29.91 inHg

8:00 PM

Overcast night

80° 💧 None 💨 7 mph H 50%29.91 inHg

9:00 PM

Overcast night

78° 💧 None 💨 7 mph H 50%29.94 inHg

10:00 PM

Overcast night

77° 💧 None 💨 9 mph H 48%29.94 inHg

11:00 PM

Overcast night

75° 💧 None 💨 9 mph H 50%29.94 inHg

Monday

12:00 AM

Mostly cloudy night

74° 💧 None 💨 9 mph H 52%29.94 inHg

1:00 AM

Mostly cloudy night

75° 💧 None 💨 10 mph H 50%29.94 inHg

2:00 AM

Partly cloudy night

74° 💧 None 💨 9 mph H 49%29.94 inHg

3:00 AM

Mostly cloudy night

75° 💧 None 💨 9 mph H 46%29.91 inHg

4:00 AM

Mostly cloudy night

78° 💧 None 💨 10 mph H 39%29.91 inHg

5:00 AM

Mostly cloudy night

77° 💧 None 💨 10 mph H 41%29.94 inHg

6:00 AM

Mostly cloudy night

73° 💧 None 💨 9 mph H 47%29.94 inHg

7:00 AM

Mostly cloudy

71° 💧 None 💨 9 mph H 56%29.97 inHg

8:00 AM

Overcast

73° 💧 None 💨 11 mph H 59%29.97 inHg

9:00 AM

Overcast

77° 💧 None 💨 11 mph H 59%29.97 inHg

10:00 AM

Overcast

82° 💧 None 💨 11 mph H 55%29.97 inHg

11:00 AM

Mostly cloudy

88° 💧 None 💨 13 mph H 49%29.97 inHg

12:00 PM

Mostly cloudy

91° 💧 None 💨 13 mph H 44%29.94 inHg

1:00 PM

Mostly cloudy

94° 💧 None 💨 14 mph H 42%29.94 inHg

2:00 PM

Overcast

95° 💧 None 💨 13 mph H 41%29.91 inHg

3:00 PM

Overcast

96° 💧 None 💨 13 mph H 41%29.91 inHg

4:00 PM

Overcast

95° 💧 None 💨 12 mph H 42%29.88 inHg

5:00 PM

Overcast

94° 💧 None 💨 11 mph H 45%29.88 inHg

6:00 PM

Overcast

90° 💧 None 💨 9 mph H 52%29.88 inHg

7:00 PM

Overcast

86° 💧 None 💨 9 mph H 54%29.88 inHg

8:00 PM

Overcast night

85° 💧 None 💨 9 mph H 51%29.88 inHg

9:00 PM

Overcast night

84° 💧 None 💨 11 mph H 51%29.88 inHg

10:00 PM

Overcast night

86° 💧 None 💨 12 mph H 43%29.91 inHg

11:00 PM

Overcast night

84° 💧 None 💨 11 mph H 43%29.91 inHg

Tuesday

12:00 AM

Overcast night

82° 💧 None 💨 11 mph H 45%29.91 inHg

1:00 AM

Overcast night

81° 💧 None 💨 11 mph H 46%29.91 inHg

2:00 AM

Mostly clear night

80° 💧 None 💨 11 mph H 47%29.91 inHg

3:00 AM

Mostly clear night

80° 💧 None 💨 10 mph H 48%29.91 inHg

4:00 AM

Partly cloudy night

79° 💧 None 💨 10 mph H 49%29.94 inHg

5:00 AM

Partly cloudy night

77° 💧 None 💨 10 mph H 53%29.94 inHg

6:00 AM

Partly cloudy night

76° 💧 None 💨 9 mph H 55%29.94 inHg

7:00 AM

Partly cloudy

74° 💧 None 💨 9 mph H 61%29.97 inHg

8:00 AM

Overcast

76° 💧 None 💨 9 mph H 65%29.97 inHg

9:00 AM

Overcast

81° 💧 None 💨 10 mph H 59%29.97 inHg

10:00 AM

Overcast

87° 💧 None 💨 11 mph H 53%29.97 inHg

11:00 AM

Overcast

91° 💧 None 💨 12 mph H 47%29.97 inHg

12:00 PM

Overcast

94° 💧 None 💨 12 mph H 43%29.97 inHg

1:00 PM

Overcast

97° 💧 None 💨 12 mph H 38%29.94 inHg

2:00 PM

Overcast

98° 💧 None 💨 11 mph H 37%29.91 inHg

3:00 PM

Overcast

98° 💧 None 💨 11 mph H 37%29.91 inHg

4:00 PM

Overcast

98° 💧 None 💨 11 mph H 38%29.88 inHg

5:00 PM

Mostly cloudy

95° 💧 None 💨 11 mph H 42%29.88 inHg

6:00 PM

Mostly cloudy

91° 💧 None 💨 9 mph H 48%29.91 inHg

7:00 PM

Mostly cloudy

87° 💧 None 💨 8 mph H 50%29.91 inHg

8:00 PM

Clear night

86° 💧 None 💨 8 mph H 43%29.91 inHg

9:00 PM

Clear night

85° 💧 None 💨 9 mph H 44%29.91 inHg

10:00 PM

Clear night

83° 💧 None 💨 9 mph H 49%29.91 inHg

11:00 PM

Clear night

81° 💧 None 💨 9 mph H 52%29.91 inHg

In Monticello and, more broadly, across the state of Illinois: Clear skies will continue through the evening, with temperatures remaining mild to warm, ranging from 77 to 80 degrees Fahrenheit. Light eastward winds will persist, with maximum speeds around 7 mph and occasional gusts reaching up to 9 mph. No precipitation is expected overnight, so conditions will remain dry and calm. It should be a pleasant evening with comfortable temperatures and gentle breezes.

15-Day Weather Outlook for Monticello

TomorrowTomorrow

Overcast 83°/62° 💧 None 💨 9 mph

Sunday, Aug 30Sun Aug 30

Light rain 90°/69° 💧 0.01 in 💨 14 mph

Monday, Aug 31Mon Aug 31

Overcast 96°/73° 💧 None 💨 13 mph

Tuesday, Sep 1Tue Sep 1

Partly cloudy 99°/76° 💧 None 💨 11 mph

Wednesday, Sep 2Wed Sep 2

Sunny 98°/75° 💧 None 💨 16 mph

Thursday, Sep 3Thu Sep 3

Light rain 97°/76° 💧 0.01 in 💨 11 mph

Friday, Sep 4Fri Sep 4

Sunny 101°/78° 💧 None 💨 15 mph

Saturday, Sep 5Sat Sep 5

Light rain 95°/75° 💧 0.08 in 💨 10 mph

Sunday, Sep 6Sun Sep 6

Light rain 92°/74° 💧 0.02 in 💨 13 mph

Monday, Sep 7Mon Sep 7

Overcast 81°/65° 💧 None 💨 8 mph

Tuesday, Sep 8Tue Sep 8

Partly cloudy 99°/65° 💧 None 💨 12 mph

Wednesday, Sep 9Wed Sep 9

Sunny 109°/78° 💧 None 💨 14 mph

Thursday, Sep 10Thu Sep 10

Light rain 107°/81° 💧 0.05 in 💨 16 mph

Friday, Sep 11Fri Sep 11

Light rain 81°/65° 💧 0.13 in 💨 14 mph

Saturday, Sep 12Sat Sep 12

Sunny 77°/58° 💧 None 💨 12 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Monticello

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Monticello

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 12:00 AM

PM2.5 Fine particles Good 5,7µg/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 5,9µg/m³

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

O₃ Ozone Good 41,7µg/m³

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

NO₂ Nitrogen dioxide Good 5,9µg/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 Monticello

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 7,7High —Unavailable

Tomorrow UV 7,1High 😐Moderate

Sunday UV 7,7High 😐Moderate

Monday UV 7,9High 😐Moderate

Tuesday UV 8,1Very high 😐Moderate

Wednesday UV 9,0Very high —Unavailable

Thursday UV 7,0High —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.

Good air quality

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

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 Monticello

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

Internal PR simulation: 3.91 Population: 6,304

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Forecast data for Monticello were last refreshed today at 11:53 PM. The current forecast period extends through 30/08/2026 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.