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As of 00:56 CST

Weather in Marietta, IL

66°Current weather

Marietta, Tuesday, 3 November, 00:56

Overcast. Feels like 66°. High 68°, low 61°.

Pressure29.88 inHg
Wind13.8 mph S
Humidity88%
Visibility6.2 mi
Dew point62°
Wed, 0461° / 53°0Overcast
61 °Overcast

Marietta, Wednesday, 4 November

Overcast. High 61°, low 53°.

Pressure29.74 inHg
Wind13.1 mph SW
Humidity69%
Visibility6.2 mi
Dew point48°
Thu, 0556° / 49°0Overcast
56 °Overcast

Marietta, Thursday, 5 November

Overcast. High 56°, low 49°.

Pressure29.80 inHg
Wind12.9 mph W
Humidity62%
Visibility6.2 mi
Dew point43°
Fri, 0654° / 50°0Overcast
54 °Overcast

Marietta, Friday, 6 November

Overcast. High 54°, low 50°.

Pressure30.06 inHg
Wind8.5 mph N
Humidity70%
Visibility6.2 mi
Dew point44°
Sat, 0756° / 41°0Overcast
56 °Overcast

Marietta, Saturday, 7 November

Overcast. High 56°, low 41°.

Pressure30.18 inHg
Wind6.5 mph SW
Humidity54%
Visibility—
Dew point36°
Sun, 0859° / 46°0Clear
59 °Clear

Marietta, Sunday, 8 November

Clear. High 59°, low 46°.

Pressure30.12 inHg
Wind14.3 mph NW
Humidity46%
Visibility—
Dew point35°
Mon, 0966° / 45°0Mostly clear
66 °Mostly clear

Marietta, Monday, 9 November

Mostly clear. High 66°, low 45°.

Pressure30.12 inHg
Wind12.3 mph SW
Humidity48%
Visibility—
Dew point42°
Tue, 1067° / 49°0Mostly clear
67 °Mostly clear

Marietta, Tuesday, 10 November

Mostly clear. High 67°, low 49°.

Pressure30.15 inHg
Wind8.6 mph SW
Humidity53%
Visibility—
Dew point46°
Wed, 1156° / 44°0Overcast
56 °Overcast

Marietta, Wednesday, 11 November

Overcast. High 56°, low 44°.

Pressure30.36 inHg
Wind11.5 mph E
Humidity52%
Visibility—
Dew point37°
Thu, 1256° / 43°0Overcast
56 °Overcast

Marietta, Thursday, 12 November

Overcast. High 56°, low 43°.

Pressure30.27 inHg
Wind8.9 mph NE
Humidity44%
Visibility—
Dew point31°
Fri, 1357° / 46°0.01Light rain
57 °Light rain

Marietta, Friday, 13 November

Light rain. High 57°, low 46°.

Pressure30.00 inHg
Wind6 mph E
Humidity54%
Visibility—
Dew point39°
Sat, 1463° / 51°0Overcast
63 °Overcast

Marietta, Saturday, 14 November

Overcast. High 63°, low 51°.

Pressure30.00 inHg
Wind8.1 mph E
Humidity62%
Visibility—
Dew point45°
Sun, 1568° / 49°0Partly cloudy
68 °Partly cloudy

Marietta, Sunday, 15 November

Partly cloudy. High 68°, low 49°.

Pressure30.00 inHg
Wind10.2 mph SW
Humidity50%
Visibility—
Dew point45°
Mon, 1670° / 51°0Clear
70 °Clear

Marietta, Monday, 16 November

Clear. High 70°, low 51°.

Pressure29.97 inHg
Wind13.1 mph SW
Humidity51%
Visibility—
Dew point47°
Tue, 1768° / 53°0Overcast
68 °Overcast

Marietta, Tuesday, 17 November

Overcast. High 68°, low 53°.

Pressure30.03 inHg
Wind9.5 mph SW
Humidity57%
Visibility—
Dew point50°
Wed, 1861° / 53°0Overcast
61 °Overcast

Marietta, Wednesday, 18 November

Overcast. High 61°, low 53°.

Pressure29.91 inHg
Wind13.2 mph SW
Humidity75%
Visibility—
Dew point52°

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 Marietta, 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 Marietta, 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.