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As of 16:03 CDT

Weather in Marcus, IL

77°Current weather

Marcus, Wednesday, 7 October, 16:03

Clear. Feels like 76°. High 77°, low 56°.

Pressure29.88 inHg
Wind12.7 mph NW
Humidity33%
Visibility6.2 mi
Dew point47°
Thu, 0872° / 50°0Partly cloudy
72 °Partly cloudy

Marcus, Thursday, 8 October

Partly cloudy. High 72°, low 50°.

Pressure30.12 inHg
Wind3.6 mph NW
Humidity49%
Visibility6.2 mi
Dew point46°
Fri, 0968° / 51°0.26Rain
68 °Rain

Marcus, Friday, 9 October

Rain. High 68°, low 51°.

Pressure30.09 inHg
Wind10.3 mph SE
Humidity61%
Visibility5.2 mi
Dew point52°
Sat, 1080° / 61°0Clear
80 °Clear

Marcus, Saturday, 10 October

Clear. High 80°, low 61°.

Pressure30.06 inHg
Wind9.7 mph S
Humidity58%
Visibility6.2 mi
Dew point60°
Sun, 1175° / 60°0Clear
75 °Clear

Marcus, Sunday, 11 October

Clear. High 75°, low 60°.

Pressure29.97 inHg
Wind5.1 mph SE
Humidity56%
Visibility6.2 mi
Dew point56°
Mon, 1279° / 56°0.01Light rain
79 °Light rain

Marcus, Monday, 12 October

Light rain. High 79°, low 56°.

Pressure29.80 inHg
Wind8.2 mph SW
Humidity62%
Visibility—
Dew point59°
Tue, 1364° / 52°0Overcast
64 °Overcast

Marcus, Tuesday, 13 October

Overcast. High 64°, low 52°.

Pressure30.03 inHg
Wind15.1 mph N
Humidity61%
Visibility—
Dew point47°
Wed, 1468° / 51°0.11Light rain
68 °Light rain

Marcus, Wednesday, 14 October

Light rain. High 68°, low 51°.

Pressure29.91 inHg
Wind14.5 mph SE
Humidity73%
Visibility—
Dew point50°
Thu, 1585° / 58°0.04Light rain
85 °Light rain

Marcus, Thursday, 15 October

Light rain. High 85°, low 58°.

Pressure29.65 inHg
Wind22.8 mph SW
Humidity57%
Visibility—
Dew point66°
Fri, 1660° / 47°0Clear
60 °Clear

Marcus, Friday, 16 October

Clear. High 60°, low 47°.

Pressure30.33 inHg
Wind15.4 mph NW
Humidity57%
Visibility—
Dew point43°
Sat, 1752° / 41°0Clear
52 °Clear

Marcus, Saturday, 17 October

Clear. High 52°, low 41°.

Pressure30.39 inHg
Wind12.8 mph N
Humidity52%
Visibility—
Dew point32°
Sun, 1856° / 37°0Mostly clear
56 °Mostly clear

Marcus, Sunday, 18 October

Mostly clear. High 56°, low 37°.

Pressure30.42 inHg
Wind5.9 mph E
Humidity46%
Visibility—
Dew point32°
Mon, 1958° / 40°0Light rain
58 °Light rain

Marcus, Monday, 19 October

Light rain. High 58°, low 40°.

Pressure30.42 inHg
Wind16.4 mph S
Humidity47%
Visibility—
Dew point35°
Tue, 2060° / 50°0.03Light rain
60 °Light rain

Marcus, Tuesday, 20 October

Light rain. High 60°, low 50°.

Pressure30.27 inHg
Wind12 mph SW
Humidity67%
Visibility—
Dew point45°
Wed, 2160° / 47°0Overcast
60 °Overcast

Marcus, Wednesday, 21 October

Overcast. High 60°, low 47°.

Pressure30.12 inHg
Wind7.5 mph N
Humidity57%
Visibility—
Dew point43°
Thu, 2256° / 46°0.02Light rain
56 °Light rain

Marcus, Thursday, 22 October

Light rain. High 56°, low 46°.

Pressure29.85 inHg
Wind5.3 mph NW
Humidity76%
Visibility—
Dew point44°

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 Marcus, 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 Marcus, 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.