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As of 04:24 CDT

Weather in Marcus, IL

55°Current weather

Marcus, Wednesday, 7 October, 04:24

Clear. Feels like 55°. High 78°, low 55°.

Pressure29.83 inHg
Wind0 mph N
Humidity82%
Visibility6.2 mi
Dew point50°
Thu, 0871° / 49°0Clear
71 °Clear

Marcus, Thursday, 8 October

Clear. High 71°, low 49°.

Pressure30.12 inHg
Wind5.7 mph NW
Humidity45%
Visibility6.2 mi
Dew point43°
Fri, 0971° / 50°0.08Rain
71 °Rain

Marcus, Friday, 9 October

Rain. High 71°, low 50°.

Pressure30.09 inHg
Wind11.2 mph SE
Humidity57%
Visibility6.2 mi
Dew point51°
Sat, 1079° / 62°0Clear
79 °Clear

Marcus, Saturday, 10 October

Clear. High 79°, low 62°.

Pressure30.03 inHg
Wind10.4 mph S
Humidity49%
Visibility6.2 mi
Dew point55°
Sun, 1173° / 60°0Clear
73 °Clear

Marcus, Sunday, 11 October

Clear. High 73°, low 60°.

Pressure29.85 inHg
Wind6.8 mph SE
Humidity56%
Visibility—
Dew point54°
Mon, 1275° / 58°0.02Light rain
75 °Light rain

Marcus, Monday, 12 October

Light rain. High 75°, low 58°.

Pressure29.74 inHg
Wind12.3 mph N
Humidity62%
Visibility—
Dew point58°
Tue, 1354° / 43°0.02Light rain
54 °Light rain

Marcus, Tuesday, 13 October

Light rain. High 54°, low 43°.

Pressure30.09 inHg
Wind12.5 mph NE
Humidity73%
Visibility—
Dew point45°
Wed, 1454° / 43°0.22Light rain
54 °Light rain

Marcus, Wednesday, 14 October

Light rain. High 54°, low 43°.

Pressure30.12 inHg
Wind17.9 mph SE
Humidity66%
Visibility—
Dew point40°
Thu, 1571° / 50°2.5Heavy rain
71 °Heavy rain

Marcus, Thursday, 15 October

Heavy rain. High 71°, low 50°.

Pressure29.62 inHg
Wind17.7 mph S
Humidity85%
Visibility—
Dew point65°
Fri, 1651° / 41°0Mostly clear
51 °Mostly clear

Marcus, Friday, 16 October

Mostly clear. High 51°, low 41°.

Pressure30.12 inHg
Wind14.7 mph NW
Humidity57%
Visibility—
Dew point35°
Sat, 1744° / 36°0Overcast
44 °Overcast

Marcus, Saturday, 17 October

Overcast. High 44°, low 36°.

Pressure30.30 inHg
Wind15.5 mph NW
Humidity67%
Visibility—
Dew point32°
Sun, 1852° / 31°0Overcast
52 °Overcast

Marcus, Sunday, 18 October

Overcast. High 52°, low 31°.

Pressure30.24 inHg
Wind11.5 mph W
Humidity48%
Visibility—
Dew point28°
Mon, 1957° / 39°0Overcast
57 °Overcast

Marcus, Monday, 19 October

Overcast. High 57°, low 39°.

Pressure30.24 inHg
Wind8.4 mph SW
Humidity54%
Visibility—
Dew point37°
Tue, 2060° / 42°0Mostly clear
60 °Mostly clear

Marcus, Tuesday, 20 October

Mostly clear. High 60°, low 42°.

Pressure30.47 inHg
Wind6.3 mph E
Humidity47%
Visibility—
Dew point37°
Wed, 2149° / 45°0.07Light rain
49 °Light rain

Marcus, Wednesday, 21 October

Light rain. High 49°, low 45°.

Pressure30.33 inHg
Wind5.8 mph S
Humidity77%
Visibility—
Dew point41°
Thu, 2255° / 40°0Clear
55 °Clear

Marcus, Thursday, 22 October

Clear. High 55°, low 40°.

Pressure30.12 inHg
Wind10.8 mph W
Humidity52%
Visibility—
Dew point35°

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.