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As of 04:18 CDT

Weather in Marengo, IL

56°Current weather

Marengo, Thursday, 15 October, 04:18

Overcast. Feels like 55°. High 63°, low 56°.

Pressure30.15 inHg
Wind7 mph E
Humidity87%
Visibility6.2 mi
Dew point52°
Fri, 1655° / 43°0.03Light rain
55 °Light rain

Marengo, Friday, 16 October

Light rain. High 55°, low 43°.

Pressure30.06 inHg
Wind18.7 mph NW
Humidity71%
Visibility6.2 mi
Dew point43°
Sat, 1755° / 36°0Clear
55 °Clear

Marengo, Saturday, 17 October

Clear. High 55°, low 36°.

Pressure30.53 inHg
Wind6.6 mph SW
Humidity48%
Visibility6.2 mi
Dew point32°
Sun, 1861° / 41°0Clear
61 °Clear

Marengo, Sunday, 18 October

Clear. High 61°, low 41°.

Pressure30.45 inHg
Wind14.3 mph SW
Humidity44%
Visibility6.2 mi
Dew point36°
Mon, 1963° / 41°0Overcast
63 °Overcast

Marengo, Monday, 19 October

Overcast. High 63°, low 41°.

Pressure30.39 inHg
Wind7.7 mph SW
Humidity47%
Visibility—
Dew point39°
Tue, 2065° / 45°0Mostly clear
65 °Mostly clear

Marengo, Tuesday, 20 October

Mostly clear. High 65°, low 45°.

Pressure30.33 inHg
Wind7.4 mph E
Humidity44%
Visibility—
Dew point40°
Wed, 2166° / 48°0Clear
66 °Clear

Marengo, Wednesday, 21 October

Clear. High 66°, low 48°.

Pressure30.36 inHg
Wind6.8 mph SE
Humidity46%
Visibility—
Dew point42°
Thu, 2267° / 49°0Overcast
67 °Overcast

Marengo, Thursday, 22 October

Overcast. High 67°, low 49°.

Pressure30.27 inHg
Wind9.4 mph S
Humidity49%
Visibility—
Dew point43°
Fri, 2367° / 53°0Overcast
67 °Overcast

Marengo, Friday, 23 October

Overcast. High 67°, low 53°.

Pressure30.15 inHg
Wind14.4 mph SE
Humidity47%
Visibility—
Dew point43°
Sat, 2459° / 53°0.24Light rain
59 °Light rain

Marengo, Saturday, 24 October

Light rain. High 59°, low 53°.

Pressure30.12 inHg
Wind15 mph S
Humidity94%
Visibility—
Dew point54°
Sun, 2553° / 43°0.22Rain
53 °Rain

Marengo, Sunday, 25 October

Rain. High 53°, low 43°.

Pressure30.12 inHg
Wind15.2 mph W
Humidity52%
Visibility—
Dew point34°
Mon, 2647° / 35°0Clear
47 °Clear

Marengo, Monday, 26 October

Clear. High 47°, low 35°.

Pressure30.30 inHg
Wind14.6 mph W
Humidity41%
Visibility—
Dew point23°
Tue, 2744° / 32°0Partly cloudy
44 °Partly cloudy

Marengo, Tuesday, 27 October

Partly cloudy. High 44°, low 32°.

Pressure30.27 inHg
Wind13.2 mph W
Humidity33%
Visibility—
Dew point15°
Wed, 2854° / 32°0Overcast
54 °Overcast

Marengo, Wednesday, 28 October

Overcast. High 54°, low 32°.

Pressure30.03 inHg
Wind18.6 mph SW
Humidity51%
Visibility—
Dew point32°
Thu, 2948° / 39°0.06Light rain
48 °Light rain

Marengo, Thursday, 29 October

Light rain. High 48°, low 39°.

Pressure30.09 inHg
Wind9.8 mph NW
Humidity48%
Visibility—
Dew point27°
Fri, 3040° / 29°0Clear
40 °Clear

Marengo, Friday, 30 October

Clear. High 40°, low 29°.

Pressure30.47 inHg
Wind17.3 mph N
Humidity37%
Visibility—
Dew point14°

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 Marengo, 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 Marengo, 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.