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As of 03:24 CDT

Weather in Monticello, IL

64°Current weather

Monticello, Thursday, 15 October, 03:24

Overcast. Feels like 64°. High 76°, low 64°.

Pressure30.09 inHg
Wind6.4 mph NE
Humidity83%
Visibility6.2 mi
Dew point58°
Fri, 1664° / 49°0.15Rain
64 °Rain

Monticello, Friday, 16 October

Rain. High 64°, low 49°.

Pressure30.09 inHg
Wind17.9 mph NW
Humidity52%
Visibility6.2 mi
Dew point38°
Sat, 1757° / 40°0Clear
57 °Clear

Monticello, Saturday, 17 October

Clear. High 57°, low 40°.

Pressure30.56 inHg
Wind2.9 mph N
Humidity47%
Visibility6.2 mi
Dew point34°
Sun, 1863° / 41°0Clear
63 °Clear

Monticello, Sunday, 18 October

Clear. High 63°, low 41°.

Pressure30.50 inHg
Wind9.3 mph S
Humidity37%
Visibility6.2 mi
Dew point32°
Mon, 1966° / 41°0Partly cloudy
66 °Partly cloudy

Monticello, Monday, 19 October

Partly cloudy. High 66°, low 41°.

Pressure30.39 inHg
Wind4.5 mph S
Humidity37%
Visibility—
Dew point35°
Tue, 2069° / 46°0Clear
69 °Clear

Monticello, Tuesday, 20 October

Clear. High 69°, low 46°.

Pressure30.30 inHg
Wind5.1 mph E
Humidity38%
Visibility—
Dew point38°
Wed, 2171° / 52°0Clear
71 °Clear

Monticello, Wednesday, 21 October

Clear. High 71°, low 52°.

Pressure30.33 inHg
Wind7.1 mph E
Humidity32%
Visibility—
Dew point36°
Thu, 2271° / 51°0Overcast
71 °Overcast

Monticello, Thursday, 22 October

Overcast. High 71°, low 51°.

Pressure30.27 inHg
Wind7.2 mph E
Humidity35%
Visibility—
Dew point38°
Fri, 2380° / 57°0Overcast
80 °Overcast

Monticello, Friday, 23 October

Overcast. High 80°, low 57°.

Pressure30.06 inHg
Wind21.4 mph S
Humidity44%
Visibility—
Dew point53°
Sat, 2468° / 65°0.6Rain
68 °Rain

Monticello, Saturday, 24 October

Rain. High 68°, low 65°.

Pressure30.18 inHg
Wind13.4 mph S
Humidity92%
Visibility—
Dew point63°
Sun, 2565° / 56°2.21Heavy rain
65 °Heavy rain

Monticello, Sunday, 25 October

Heavy rain. High 65°, low 56°.

Pressure30.12 inHg
Wind13.5 mph NE
Humidity96%
Visibility—
Dew point62°
Mon, 2657° / 48°1.01Heavy rain
57 °Heavy rain

Monticello, Monday, 26 October

Heavy rain. High 57°, low 48°.

Pressure30.09 inHg
Wind19.1 mph NW
Humidity45%
Visibility—
Dew point33°
Tue, 2761° / 46°0Partly cloudy
61 °Partly cloudy

Monticello, Tuesday, 27 October

Partly cloudy. High 61°, low 46°.

Pressure30.15 inHg
Wind3.9 mph NE
Humidity45%
Visibility—
Dew point37°
Wed, 2862° / 48°0Partly cloudy
62 °Partly cloudy

Monticello, Wednesday, 28 October

Partly cloudy. High 62°, low 48°.

Pressure29.88 inHg
Wind6.7 mph NE
Humidity47%
Visibility—
Dew point39°
Thu, 2963° / 48°0Clear
63 °Clear

Monticello, Thursday, 29 October

Clear. High 63°, low 48°.

Pressure30.00 inHg
Wind13.3 mph NW
Humidity51%
Visibility—
Dew point42°
Fri, 3062° / 45°0Clear
62 °Clear

Monticello, Friday, 30 October

Clear. High 62°, low 45°.

Pressure30.12 inHg
Wind11.9 mph S
Humidity39%
Visibility—
Dew point34°

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.