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As of 02:38 CDT

Weather in Marengo, IL

63°Current weather

Marengo, Monday, 12 October, 02:38

Overcast. Feels like 63°. High 85°, low 62°.

Pressure29.88 inHg
Wind8.3 mph SW
Humidity80%
Visibility6.2 mi
Dew point57°
Tue, 1384° / 65°0Clear
84 °Clear

Marengo, Tuesday, 13 October

Clear. High 84°, low 65°.

Pressure29.83 inHg
Wind10.2 mph W
Humidity67%
Visibility6.2 mi
Dew point64°
Wed, 1471° / 58°0.04Light rain
71 °Light rain

Marengo, Wednesday, 14 October

Light rain. High 71°, low 58°.

Pressure30.09 inHg
Wind8.3 mph NE
Humidity62%
Visibility6.2 mi
Dew point55°
Thu, 1561° / 57°0.38Rain
61 °Rain

Marengo, Thursday, 15 October

Rain. High 61°, low 57°.

Pressure30.06 inHg
Wind7.9 mph E
Humidity92%
Visibility2.7 mi
Dew point59°
Fri, 1657° / 46°0.01Light rain
57 °Light rain

Marengo, Friday, 16 October

Light rain. High 57°, low 46°.

Pressure30.39 inHg
Wind23.7 mph NW
Humidity46%
Visibility—
Dew point35°
Sat, 1755° / 37°0Clear
55 °Clear

Marengo, Saturday, 17 October

Clear. High 55°, low 37°.

Pressure30.47 inHg
Wind11.1 mph SW
Humidity40%
Visibility—
Dew point29°
Sun, 1857° / 38°0Clear
57 °Clear

Marengo, Sunday, 18 October

Clear. High 57°, low 38°.

Pressure30.33 inHg
Wind20.2 mph SW
Humidity37%
Visibility—
Dew point27°
Mon, 1966° / 43°0Overcast
66 °Overcast

Marengo, Monday, 19 October

Overcast. High 66°, low 43°.

Pressure30.27 inHg
Wind14.9 mph SW
Humidity43%
Visibility—
Dew point38°
Tue, 2070° / 52°0Partly cloudy
70 °Partly cloudy

Marengo, Tuesday, 20 October

Partly cloudy. High 70°, low 52°.

Pressure30.15 inHg
Wind12.4 mph S
Humidity56%
Visibility—
Dew point51°
Wed, 2175° / 58°1.94Heavy rain
75 °Heavy rain

Marengo, Wednesday, 21 October

Heavy rain. High 75°, low 58°.

Pressure29.97 inHg
Wind18.3 mph S
Humidity63%
Visibility—
Dew point58°
Thu, 2266° / 49°0.97Heavy rain
66 °Heavy rain

Marengo, Thursday, 22 October

Heavy rain. High 66°, low 49°.

Pressure29.74 inHg
Wind21.1 mph S
Humidity60%
Visibility—
Dew point43°
Fri, 2347° / 40°0Partly cloudy
47 °Partly cloudy

Marengo, Friday, 23 October

Partly cloudy. High 47°, low 40°.

Pressure29.97 inHg
Wind17.5 mph NW
Humidity58%
Visibility—
Dew point31°
Sat, 2448° / 33°0Mostly clear
48 °Mostly clear

Marengo, Saturday, 24 October

Mostly clear. High 48°, low 33°.

Pressure30.15 inHg
Wind9.2 mph NW
Humidity50%
Visibility—
Dew point28°
Sun, 2546° / 41°0.64Rain
46 °Rain

Marengo, Sunday, 25 October

Rain. High 46°, low 41°.

Pressure29.83 inHg
Wind11.5 mph SE
Humidity91%
Visibility—
Dew point43°
Mon, 2648° / 43°0.01Light rain
48 °Light rain

Marengo, Monday, 26 October

Light rain. High 48°, low 43°.

Pressure30.03 inHg
Wind9.4 mph NE
Humidity79%
Visibility—
Dew point41°
Tue, 2749° / 43°0.02Light rain
49 °Light rain

Marengo, Tuesday, 27 October

Light rain. High 49°, low 43°.

Pressure30.00 inHg
Wind13.2 mph NW
Humidity60%
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 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.