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As of 10:42 CST

Weather in Marietta, IL

40°Current weather

Marietta, Friday, 13 November, 10:42

Partly cloudy. Feels like 33°. High 42°, low 32°.

Pressure30.15 inHg
Wind11.7 mph N
Humidity66%
Visibility6.2 mi
Dew point30°
Sat, 1445° / 27°0Clear
45 °Clear

Marietta, Saturday, 14 November

Clear. High 45°, low 27°.

Pressure30.33 inHg
Wind2.6 mph NW
Humidity59%
Visibility6.2 mi
Dew point25°
Sun, 1548° / 27°0Mostly clear
48 °Mostly clear

Marietta, Sunday, 15 November

Mostly clear. High 48°, low 27°.

Pressure30.47 inHg
Wind1.1 mph W
Humidity53%
Visibility6.2 mi
Dew point28°
Mon, 1652° / 29°0Clear
52 °Clear

Marietta, Monday, 16 November

Clear. High 52°, low 29°.

Pressure30.53 inHg
Wind5.8 mph SW
Humidity47%
Visibility6.2 mi
Dew point31°
Tue, 1755° / 34°0Partly cloudy
55 °Partly cloudy

Marietta, Tuesday, 17 November

Partly cloudy. High 55°, low 34°.

Pressure30.47 inHg
Wind7.8 mph S
Humidity51%
Visibility—
Dew point33°
Wed, 1858° / 37°0Overcast
58 °Overcast

Marietta, Wednesday, 18 November

Overcast. High 58°, low 37°.

Pressure30.30 inHg
Wind12.5 mph S
Humidity53%
Visibility—
Dew point36°
Thu, 1960° / 50°0.02Light rain
60 °Light rain

Marietta, Thursday, 19 November

Light rain. High 60°, low 50°.

Pressure30.18 inHg
Wind13.6 mph SW
Humidity77%
Visibility—
Dew point50°
Fri, 2060° / 44°0Overcast
60 °Overcast

Marietta, Friday, 20 November

Overcast. High 60°, low 44°.

Pressure30.36 inHg
Wind10.5 mph SE
Humidity60%
Visibility—
Dew point42°
Sat, 2168° / 53°0.22Rain
68 °Rain

Marietta, Saturday, 21 November

Rain. High 68°, low 53°.

Pressure29.71 inHg
Wind27.8 mph S
Humidity44%
Visibility—
Dew point41°
Sun, 2251° / 35°0Overcast
51 °Overcast

Marietta, Sunday, 22 November

Overcast. High 51°, low 35°.

Pressure30.12 inHg
Wind18.5 mph W
Humidity48%
Visibility—
Dew point26°
Mon, 2338° / 28°0Partly cloudy
38 °Partly cloudy

Marietta, Monday, 23 November

Partly cloudy. High 38°, low 28°.

Pressure30.33 inHg
Wind14.9 mph N
Humidity44%
Visibility—
Dew point17°
Tue, 2427° / 19°0Partly cloudy
27 °Partly cloudy

Marietta, Tuesday, 24 November

Partly cloudy. High 27°, low 19°.

Pressure30.36 inHg
Wind16.7 mph NW
Humidity37%
Visibility—
Dew point2°
Wed, 2529° / 17°0Clear
29 °Clear

Marietta, Wednesday, 25 November

Clear. High 29°, low 17°.

Pressure30.21 inHg
Wind16.3 mph NW
Humidity37%
Visibility—
Dew point5°
Thu, 2636° / 18°0Overcast
36 °Overcast

Marietta, Thursday, 26 November

Overcast. High 36°, low 18°.

Pressure30.12 inHg
Wind16.1 mph SW
Humidity35%
Visibility—
Dew point6°
Fri, 2736° / 25°0Clear
36 °Clear

Marietta, Friday, 27 November

Clear. High 36°, low 25°.

Pressure29.97 inHg
Wind15.1 mph SW
Humidity36%
Visibility—
Dew point10°
Sat, 2840° / 21°0Clear
40 °Clear

Marietta, Saturday, 28 November

Clear. High 40°, low 21°.

Pressure30.12 inHg
Wind7.5 mph SE
Humidity32%
Visibility—
Dew point7°

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.