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As of 23:32 CDT

Weather in Marengo, IL

65°Current weather

Marengo, Saturday, 8 August, 23:32

Clear. Feels like 65°. High 82°, low 65°.

Pressure30.03 inHg
Wind2.6 mph SW
Humidity91%
Visibility6.2 mi
Dew point62°
Sun, 0986° / 62°0.79Heavy rain
86 °Heavy rain

Marengo, Sunday, 9 August

Heavy rain. High 86°, low 62°.

Pressure29.91 inHg
Wind11.6 mph S
Humidity83%
Visibility6.2 mi
Dew point73°
Mon, 1085° / 70°1.13Heavy rain
85 °Heavy rain

Marengo, Monday, 10 August

Heavy rain. High 85°, low 70°.

Pressure29.91 inHg
Wind6.9 mph E
Humidity79%
Visibility6.2 mi
Dew point70°
Tue, 1184° / 68°0.52Heavy rain
84 °Heavy rain

Marengo, Tuesday, 11 August

Heavy rain. High 84°, low 68°.

Pressure29.77 inHg
Wind2.8 mph S
Humidity84%
Visibility6.2 mi
Dew point73°
Wed, 1280° / 65°0.01Light rain
80 °Light rain

Marengo, Wednesday, 12 August

Light rain. High 80°, low 65°.

Pressure29.88 inHg
Wind6.2 mph W
Humidity80%
Visibility6.2 mi
Dew point71°
Thu, 1371° / 59°0Overcast
71 °Overcast

Marengo, Thursday, 13 August

Overcast. High 71°, low 59°.

Pressure30.03 inHg
Wind8.4 mph E
Humidity68%
Visibility—
Dew point58°
Fri, 1477° / 56°0Mostly clear
77 °Mostly clear

Marengo, Friday, 14 August

Mostly clear. High 77°, low 56°.

Pressure30.12 inHg
Wind7.3 mph SE
Humidity57%
Visibility—
Dew point56°
Sat, 1572° / 58°0Overcast
72 °Overcast

Marengo, Saturday, 15 August

Overcast. High 72°, low 58°.

Pressure30.27 inHg
Wind9.4 mph SW
Humidity59%
Visibility—
Dew point56°
Sun, 1674° / 57°0Overcast
74 °Overcast

Marengo, Sunday, 16 August

Overcast. High 74°, low 57°.

Pressure30.15 inHg
Wind5.5 mph E
Humidity73%
Visibility—
Dew point60°
Mon, 1779° / 62°0.02Light rain
79 °Light rain

Marengo, Monday, 17 August

Light rain. High 79°, low 62°.

Pressure30.06 inHg
Wind4.9 mph W
Humidity67%
Visibility—
Dew point63°
Tue, 1881° / 65°0Overcast
81 °Overcast

Marengo, Tuesday, 18 August

Overcast. High 81°, low 65°.

Pressure29.97 inHg
Wind12.5 mph SW
Humidity69%
Visibility—
Dew point67°
Wed, 1973° / 58°0.01Light rain
73 °Light rain

Marengo, Wednesday, 19 August

Light rain. High 73°, low 58°.

Pressure29.94 inHg
Wind16.3 mph NW
Humidity78%
Visibility—
Dew point58°
Thu, 2065° / 52°0Overcast
65 °Overcast

Marengo, Thursday, 20 August

Overcast. High 65°, low 52°.

Pressure30.09 inHg
Wind12 mph NE
Humidity64%
Visibility—
Dew point51°
Fri, 2173° / 53°0Clear
73 °Clear

Marengo, Friday, 21 August

Clear. High 73°, low 53°.

Pressure30.09 inHg
Wind8.4 mph E
Humidity60%
Visibility—
Dew point55°
Sat, 2268° / 55°0.04Light rain
68 °Light rain

Marengo, Saturday, 22 August

Light rain. High 68°, low 55°.

Pressure29.88 inHg
Wind9.9 mph SE
Humidity92%
Visibility—
Dew point57°
Sun, 2378° / 63°0Mostly clear
78 °Mostly clear

Marengo, Sunday, 23 August

Mostly clear. High 78°, low 63°.

Pressure29.91 inHg
Wind15.1 mph W
Humidity50%
Visibility—
Dew point56°

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.