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As of 09:17 CST

Weather in Marietta, IL

34°Current weather

Marietta, Saturday, 14 November, 09:17

Clear. Feels like 32°. High 45°, low 27°.

Pressure30.33 inHg
Wind3.2 mph N
Humidity82%
Visibility6.2 mi
Dew point29°
Sun, 1548° / 28°0Clear
48 °Clear

Marietta, Sunday, 15 November

Clear. High 48°, low 28°.

Pressure30.47 inHg
Wind1.4 mph SW
Humidity54%
Visibility6.2 mi
Dew point28°
Mon, 1652° / 28°0Clear
52 °Clear

Marietta, Monday, 16 November

Clear. High 52°, low 28°.

Pressure30.53 inHg
Wind5.1 mph SW
Humidity49%
Visibility6.2 mi
Dew point32°
Tue, 1755° / 33°0Clear
55 °Clear

Marietta, Tuesday, 17 November

Clear. High 55°, low 33°.

Pressure30.47 inHg
Wind8.2 mph S
Humidity52%
Visibility6.2 mi
Dew point36°
Wed, 1858° / 38°0Overcast
58 °Overcast

Marietta, Wednesday, 18 November

Overcast. High 58°, low 38°.

Pressure30.33 inHg
Wind12.7 mph S
Humidity53%
Visibility—
Dew point37°
Thu, 1961° / 47°0.12Light rain
61 °Light rain

Marietta, Thursday, 19 November

Light rain. High 61°, low 47°.

Pressure30.21 inHg
Wind11 mph S
Humidity60%
Visibility—
Dew point43°
Fri, 2062° / 44°0Overcast
62 °Overcast

Marietta, Friday, 20 November

Overcast. High 62°, low 44°.

Pressure30.18 inHg
Wind14.9 mph S
Humidity63%
Visibility—
Dew point42°
Sat, 2165° / 50°0.3Rain
65 °Rain

Marietta, Saturday, 21 November

Rain. High 65°, low 50°.

Pressure29.83 inHg
Wind25 mph SW
Humidity50%
Visibility—
Dew point45°
Sun, 2248° / 37°0Overcast
48 °Overcast

Marietta, Sunday, 22 November

Overcast. High 48°, low 37°.

Pressure30.24 inHg
Wind21.5 mph W
Humidity64%
Visibility—
Dew point32°
Mon, 2343° / 30°0Clear
43 °Clear

Marietta, Monday, 23 November

Clear. High 43°, low 30°.

Pressure30.36 inHg
Wind8.9 mph N
Humidity38%
Visibility—
Dew point16°
Tue, 2445° / 28°0Overcast
45 °Overcast

Marietta, Tuesday, 24 November

Overcast. High 45°, low 28°.

Pressure30.30 inHg
Wind10.3 mph S
Humidity31%
Visibility—
Dew point13°
Wed, 2543° / 39°0.08Light rain
43 °Light rain

Marietta, Wednesday, 25 November

Light rain. High 43°, low 39°.

Pressure30.06 inHg
Wind11.6 mph S
Humidity60%
Visibility—
Dew point30°
Thu, 2655° / 44°0Overcast
55 °Overcast

Marietta, Thursday, 26 November

Overcast. High 55°, low 44°.

Pressure29.97 inHg
Wind16.6 mph S
Humidity79%
Visibility—
Dew point44°
Fri, 2766° / 55°0.04Light rain
66 °Light rain

Marietta, Friday, 27 November

Light rain. High 66°, low 55°.

Pressure29.77 inHg
Wind27.7 mph S
Humidity65%
Visibility—
Dew point53°
Sat, 2857° / 34°0.7Rain
57 °Rain

Marietta, Saturday, 28 November

Rain. High 57°, low 34°.

Pressure29.83 inHg
Wind21.6 mph SW
Humidity78%
Visibility—
Dew point38°
Sun, 2939° / 27°0Clear
39 °Clear

Marietta, Sunday, 29 November

Clear. High 39°, low 27°.

Pressure30.30 inHg
Wind15.4 mph NW
Humidity49%
Visibility—
Dew point19°

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.