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As of 15:50 CST

Weather in Marietta, IL

62°Current weather

Marietta, Sunday, 8 November, 15:50

Clear. Feels like 60°. High 63°, low 37°.

Pressure30.03 inHg
Wind7.2 mph W
Humidity47%
Visibility6.2 mi
Dew point42°
Mon, 0965° / 35°0Clear
65 °Clear

Marietta, Monday, 9 November

Clear. High 65°, low 35°.

Pressure30.12 inHg
Wind6.9 mph SW
Humidity47%
Visibility6.2 mi
Dew point40°
Tue, 1064° / 42°0Clear
64 °Clear

Marietta, Tuesday, 10 November

Clear. High 64°, low 42°.

Pressure30.06 inHg
Wind1.2 mph NW
Humidity56%
Visibility6.2 mi
Dew point46°
Wed, 1161° / 45°0.8Heavy rain
61 °Heavy rain

Marietta, Wednesday, 11 November

Heavy rain. High 61°, low 45°.

Pressure29.80 inHg
Wind5.5 mph E
Humidity75%
Visibility2.9 mi
Dew point53°
Thu, 1247° / 38°0Overcast
47 °Overcast

Marietta, Thursday, 12 November

Overcast. High 47°, low 38°.

Pressure29.97 inHg
Wind13.2 mph N
Humidity54%
Visibility6.2 mi
Dew point29°
Fri, 1342° / 34°0Overcast
42 °Overcast

Marietta, Friday, 13 November

Overcast. High 42°, low 34°.

Pressure30.09 inHg
Wind12 mph N
Humidity65%
Visibility—
Dew point30°
Sat, 1448° / 30°0Clear
48 °Clear

Marietta, Saturday, 14 November

Clear. High 48°, low 30°.

Pressure30.06 inHg
Wind7.8 mph SW
Humidity41%
Visibility—
Dew point21°
Sun, 1563° / 39°0Clear
63 °Clear

Marietta, Sunday, 15 November

Clear. High 63°, low 39°.

Pressure29.91 inHg
Wind9.8 mph W
Humidity54%
Visibility—
Dew point40°
Mon, 1668° / 48°0Overcast
68 °Overcast

Marietta, Monday, 16 November

Overcast. High 68°, low 48°.

Pressure29.97 inHg
Wind8 mph SE
Humidity65%
Visibility—
Dew point50°
Tue, 1770° / 55°0.16Light rain
70 °Light rain

Marietta, Tuesday, 17 November

Light rain. High 70°, low 55°.

Pressure29.85 inHg
Wind11.8 mph SE
Humidity67%
Visibility—
Dew point56°
Wed, 1867° / 52°0.41Rain
67 °Rain

Marietta, Wednesday, 18 November

Rain. High 67°, low 52°.

Pressure29.85 inHg
Wind15.8 mph S
Humidity79%
Visibility—
Dew point60°
Thu, 1960° / 47°0.01Light rain
60 °Light rain

Marietta, Thursday, 19 November

Light rain. High 60°, low 47°.

Pressure30.15 inHg
Wind14.6 mph SW
Humidity42%
Visibility—
Dew point35°
Fri, 2055° / 43°0.12Rain
55 °Rain

Marietta, Friday, 20 November

Rain. High 55°, low 43°.

Pressure30.21 inHg
Wind13.3 mph NW
Humidity43%
Visibility—
Dew point32°
Sat, 2146° / 38°0Overcast
46 °Overcast

Marietta, Saturday, 21 November

Overcast. High 46°, low 38°.

Pressure30.24 inHg
Wind12.1 mph N
Humidity60%
Visibility—
Dew point32°
Sun, 2246° / 35°0Partly cloudy
46 °Partly cloudy

Marietta, Sunday, 22 November

Partly cloudy. High 46°, low 35°.

Pressure30.39 inHg
Wind13.9 mph NE
Humidity53%
Visibility—
Dew point28°
Mon, 2346° / 30°0Clear
46 °Clear

Marietta, Monday, 23 November

Clear. High 46°, low 30°.

Pressure30.36 inHg
Wind8.3 mph N
Humidity41%
Visibility—
Dew point20°

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.