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As of 05:23 CDT

Weather in Monticello, IL

52°Current weather

Monticello, Friday, 16 October, 05:23

Overcast. Feels like 51°. High 61°, low 51°.

Pressure30.03 inHg
Wind16.7 mph NW
Humidity85%
Visibility6.2 mi
Dew point46°
Sat, 1761° / 41°0Clear
61 °Clear

Monticello, Saturday, 17 October

Clear. High 61°, low 41°.

Pressure30.56 inHg
Wind3 mph NE
Humidity48%
Visibility6.2 mi
Dew point35°
Sun, 1864° / 41°0Clear
64 °Clear

Monticello, Sunday, 18 October

Clear. High 64°, low 41°.

Pressure30.50 inHg
Wind9 mph S
Humidity35%
Visibility6.2 mi
Dew point31°
Mon, 1967° / 41°0Clear
67 °Clear

Monticello, Monday, 19 October

Clear. High 67°, low 41°.

Pressure30.42 inHg
Wind3.6 mph SE
Humidity38%
Visibility6.2 mi
Dew point36°
Tue, 2069° / 44°0Mostly clear
69 °Mostly clear

Monticello, Tuesday, 20 October

Mostly clear. High 69°, low 44°.

Pressure30.36 inHg
Wind6.1 mph E
Humidity33%
Visibility—
Dew point34°
Wed, 2170° / 43°0Partly cloudy
70 °Partly cloudy

Monticello, Wednesday, 21 October

Partly cloudy. High 70°, low 43°.

Pressure30.30 inHg
Wind4.8 mph E
Humidity31%
Visibility—
Dew point33°
Thu, 2272° / 53°0Overcast
72 °Overcast

Monticello, Thursday, 22 October

Overcast. High 72°, low 53°.

Pressure30.18 inHg
Wind5.6 mph S
Humidity26%
Visibility—
Dew point33°
Fri, 2376° / 57°0Clear
76 °Clear

Monticello, Friday, 23 October

Clear. High 76°, low 57°.

Pressure30.18 inHg
Wind7.6 mph E
Humidity29%
Visibility—
Dew point38°
Sat, 2476° / 54°0Clear
76 °Clear

Monticello, Saturday, 24 October

Clear. High 76°, low 54°.

Pressure30.21 inHg
Wind8.5 mph SE
Humidity29%
Visibility—
Dew point37°
Sun, 2575° / 54°0Overcast
75 °Overcast

Monticello, Sunday, 25 October

Overcast. High 75°, low 54°.

Pressure30.15 inHg
Wind7 mph E
Humidity27%
Visibility—
Dew point35°
Mon, 2674° / 52°0.01Light rain
74 °Light rain

Monticello, Monday, 26 October

Light rain. High 74°, low 52°.

Pressure29.94 inHg
Wind11.9 mph SW
Humidity32%
Visibility—
Dew point38°
Tue, 2763° / 49°0.04Light rain
63 °Light rain

Monticello, Tuesday, 27 October

Light rain. High 63°, low 49°.

Pressure29.91 inHg
Wind14.6 mph W
Humidity51%
Visibility—
Dew point41°
Wed, 2867° / 50°0Overcast
67 °Overcast

Monticello, Wednesday, 28 October

Overcast. High 67°, low 50°.

Pressure30.03 inHg
Wind11.1 mph S
Humidity31%
Visibility—
Dew point33°
Thu, 2963° / 54°0.01Light rain
63 °Light rain

Monticello, Thursday, 29 October

Light rain. High 63°, low 54°.

Pressure29.85 inHg
Wind11.6 mph S
Humidity72%
Visibility—
Dew point53°
Fri, 3070° / 51°0.26Rain
70 °Rain

Monticello, Friday, 30 October

Rain. High 70°, low 51°.

Pressure29.50 inHg
Wind26.2 mph SW
Humidity84%
Visibility—
Dew point59°
Sat, 3152° / 44°0Overcast
52 °Overcast

Monticello, Saturday, 31 October

Overcast. High 52°, low 44°.

Pressure29.91 inHg
Wind20 mph W
Humidity44%
Visibility—
Dew point28°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Monticello, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Monticello, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.