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As of 00:18 CST

Weather in Marietta, IL

61°Current weather

Marietta, Wednesday, 4 November, 00:18

Overcast. Feels like 62°. High 61°, low 54°.

Pressure29.68 inHg
Wind9 mph S
Humidity93%
Visibility6.2 mi
Dew point59°
Thu, 0557° / 48°0Overcast
57 °Overcast

Marietta, Thursday, 5 November

Overcast. High 57°, low 48°.

Pressure29.83 inHg
Wind12.4 mph W
Humidity61%
Visibility6.2 mi
Dew point43°
Fri, 0651° / 36°0Overcast
51 °Overcast

Marietta, Friday, 6 November

Overcast. High 51°, low 36°.

Pressure30.18 inHg
Wind8.6 mph N
Humidity62%
Visibility6.2 mi
Dew point35°
Sat, 0751° / 32°0Overcast
51 °Overcast

Marietta, Saturday, 7 November

Overcast. High 51°, low 32°.

Pressure30.24 inHg
Wind5.3 mph W
Humidity50%
Visibility6.2 mi
Dew point30°
Sun, 0862° / 40°0Clear
62 °Clear

Marietta, Sunday, 8 November

Clear. High 62°, low 40°.

Pressure30.09 inHg
Wind9.4 mph NW
Humidity58%
Visibility—
Dew point42°
Mon, 0964° / 38°0Clear
64 °Clear

Marietta, Monday, 9 November

Clear. High 64°, low 38°.

Pressure30.12 inHg
Wind10 mph SW
Humidity34%
Visibility—
Dew point30°
Tue, 1062° / 44°0Overcast
62 °Overcast

Marietta, Tuesday, 10 November

Overcast. High 62°, low 44°.

Pressure30.12 inHg
Wind8.3 mph SW
Humidity55%
Visibility—
Dew point42°
Wed, 1156° / 44°0Overcast
56 °Overcast

Marietta, Wednesday, 11 November

Overcast. High 56°, low 44°.

Pressure30.18 inHg
Wind8 mph NE
Humidity38%
Visibility—
Dew point29°
Thu, 1252° / 44°0Overcast
52 °Overcast

Marietta, Thursday, 12 November

Overcast. High 52°, low 44°.

Pressure30.12 inHg
Wind6 mph NE
Humidity55%
Visibility—
Dew point35°
Fri, 1362° / 41°0Overcast
62 °Overcast

Marietta, Friday, 13 November

Overcast. High 62°, low 41°.

Pressure29.91 inHg
Wind10.3 mph W
Humidity56%
Visibility—
Dew point42°
Sat, 1456° / 41°0Mostly clear
56 °Mostly clear

Marietta, Saturday, 14 November

Mostly clear. High 56°, low 41°.

Pressure30.06 inHg
Wind13.2 mph NE
Humidity58%
Visibility—
Dew point40°
Sun, 1550° / 33°0Clear
50 °Clear

Marietta, Sunday, 15 November

Clear. High 50°, low 33°.

Pressure30.39 inHg
Wind11.2 mph E
Humidity32%
Visibility—
Dew point17°
Mon, 1653° / 32°0Clear
53 °Clear

Marietta, Monday, 16 November

Clear. High 53°, low 32°.

Pressure30.39 inHg
Wind9.9 mph S
Humidity29%
Visibility—
Dew point17°
Tue, 1757° / 35°0Overcast
57 °Overcast

Marietta, Tuesday, 17 November

Overcast. High 57°, low 35°.

Pressure30.36 inHg
Wind11.1 mph S
Humidity32%
Visibility—
Dew point23°
Wed, 1854° / 39°0Overcast
54 °Overcast

Marietta, Wednesday, 18 November

Overcast. High 54°, low 39°.

Pressure30.36 inHg
Wind8.9 mph S
Humidity38%
Visibility—
Dew point27°
Thu, 1951° / 47°0.16Light rain
51 °Light rain

Marietta, Thursday, 19 November

Light rain. High 51°, low 47°.

Pressure30.00 inHg
Wind20.1 mph SE
Humidity92%
Visibility—
Dew point49°

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.