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As of 17:08 CST

Weather in Marietta, IL

58°Current weather

Marietta, Tuesday, 10 November, 17:08

Clear. Feels like 56°. High 66°, low 43°.

Pressure30.03 inHg
Wind1.3 mph N
Humidity49%
Visibility6.2 mi
Dew point42°
Wed, 1161° / 43°0.01Light rain
61 °Light rain

Marietta, Wednesday, 11 November

Light rain. High 61°, low 43°.

Pressure29.77 inHg
Wind11.6 mph W
Humidity75%
Visibility6.2 mi
Dew point49°
Thu, 1246° / 38°0Overcast
46 °Overcast

Marietta, Thursday, 12 November

Overcast. High 46°, low 38°.

Pressure30.03 inHg
Wind15 mph N
Humidity56%
Visibility6.2 mi
Dew point29°
Fri, 1343° / 33°0Overcast
43 °Overcast

Marietta, Friday, 13 November

Overcast. High 43°, low 33°.

Pressure30.12 inHg
Wind11.3 mph N
Humidity61%
Visibility6.2 mi
Dew point23°
Sat, 1444° / 27°0Clear
44 °Clear

Marietta, Saturday, 14 November

Clear. High 44°, low 27°.

Pressure30.27 inHg
Wind3.4 mph N
Humidity59%
Visibility6.2 mi
Dew point24°
Sun, 1548° / 29°0Clear
48 °Clear

Marietta, Sunday, 15 November

Clear. High 48°, low 29°.

Pressure30.42 inHg
Wind6.1 mph E
Humidity53%
Visibility—
Dew point28°
Mon, 1649° / 31°0Mostly clear
49 °Mostly clear

Marietta, Monday, 16 November

Mostly clear. High 49°, low 31°.

Pressure30.50 inHg
Wind6 mph E
Humidity54%
Visibility—
Dew point29°
Tue, 1750° / 34°0Clear
50 °Clear

Marietta, Tuesday, 17 November

Clear. High 50°, low 34°.

Pressure30.39 inHg
Wind7.2 mph SE
Humidity45%
Visibility—
Dew point26°
Wed, 1855° / 35°0Clear
55 °Clear

Marietta, Wednesday, 18 November

Clear. High 55°, low 35°.

Pressure30.21 inHg
Wind14.7 mph SE
Humidity40%
Visibility—
Dew point26°
Thu, 1961° / 45°0.06Light rain
61 °Light rain

Marietta, Thursday, 19 November

Light rain. High 61°, low 45°.

Pressure30.00 inHg
Wind15.5 mph SE
Humidity60%
Visibility—
Dew point42°
Fri, 2062° / 51°0.27Rain
62 °Rain

Marietta, Friday, 20 November

Rain. High 62°, low 51°.

Pressure30.03 inHg
Wind14.3 mph S
Humidity72%
Visibility—
Dew point51°
Sat, 2160° / 50°2.02Rain
60 °Rain

Marietta, Saturday, 21 November

Rain. High 60°, low 50°.

Pressure29.71 inHg
Wind25.6 mph S
Humidity90%
Visibility—
Dew point53°
Sun, 2239° / 24°0.02Snow
39 °Snow

Marietta, Sunday, 22 November

Snow. High 39°, low 24°.

Pressure29.97 inHg
Wind18.9 mph NW
Humidity67%
Visibility—
Dew point23°
Mon, 2327° / 21°0.06Light snow
27 °Light snow

Marietta, Monday, 23 November

Light snow. High 27°, low 21°.

Pressure30.06 inHg
Wind18.5 mph W
Humidity80%
Visibility—
Dew point21°
Tue, 2431° / 18°0Clear
31 °Clear

Marietta, Tuesday, 24 November

Clear. High 31°, low 18°.

Pressure30.39 inHg
Wind14 mph W
Humidity45%
Visibility—
Dew point8°
Wed, 2544° / 27°0Clear
44 °Clear

Marietta, Wednesday, 25 November

Clear. High 44°, low 27°.

Pressure30.09 inHg
Wind16.1 mph W
Humidity65%
Visibility—
Dew point30°

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.