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As of 05:07 CST

Weather in Marietta, IL

45°Current weather

Marietta, Friday, 6 November, 05:07

Overcast. Feels like 39°. High 48°, low 34°.

Pressure30.12 inHg
Wind10.7 mph N
Humidity89%
Visibility6.2 mi
Dew point41°
Sat, 0751° / 32°0Overcast
51 °Overcast

Marietta, Saturday, 7 November

Overcast. High 51°, low 32°.

Pressure30.24 inHg
Wind4.7 mph W
Humidity49%
Visibility6.2 mi
Dew point31°
Sun, 0862° / 41°0Clear
62 °Clear

Marietta, Sunday, 8 November

Clear. High 62°, low 41°.

Pressure30.06 inHg
Wind8.3 mph W
Humidity58%
Visibility6.2 mi
Dew point45°
Mon, 0965° / 37°0Clear
65 °Clear

Marietta, Monday, 9 November

Clear. High 65°, low 37°.

Pressure30.12 inHg
Wind8.3 mph SW
Humidity46%
Visibility6.2 mi
Dew point41°
Tue, 1063° / 46°0Clear
63 °Clear

Marietta, Tuesday, 10 November

Clear. High 63°, low 46°.

Pressure30.06 inHg
Wind8.7 mph SW
Humidity55%
Visibility—
Dew point44°
Wed, 1159° / 40°0Clear
59 °Clear

Marietta, Wednesday, 11 November

Clear. High 59°, low 40°.

Pressure30.09 inHg
Wind7.8 mph N
Humidity41%
Visibility—
Dew point32°
Thu, 1246° / 40°0Overcast
46 °Overcast

Marietta, Thursday, 12 November

Overcast. High 46°, low 40°.

Pressure30.09 inHg
Wind14.5 mph N
Humidity74%
Visibility—
Dew point34°
Fri, 1342° / 31°0Overcast
42 °Overcast

Marietta, Friday, 13 November

Overcast. High 42°, low 31°.

Pressure30.06 inHg
Wind7.6 mph NW
Humidity44%
Visibility—
Dew point20°
Sat, 1449° / 30°0Partly cloudy
49 °Partly cloudy

Marietta, Saturday, 14 November

Partly cloudy. High 49°, low 30°.

Pressure30.03 inHg
Wind7.9 mph SE
Humidity45%
Visibility—
Dew point24°
Sun, 1556° / 46°0Light rain
56 °Light rain

Marietta, Sunday, 15 November

Light rain. High 56°, low 46°.

Pressure29.88 inHg
Wind15.5 mph S
Humidity52%
Visibility—
Dew point34°
Mon, 1658° / 46°0.22Rain
58 °Rain

Marietta, Monday, 16 November

Rain. High 58°, low 46°.

Pressure29.94 inHg
Wind12.3 mph S
Humidity64%
Visibility—
Dew point45°
Tue, 1747° / 39°0.09Light rain
47 °Light rain

Marietta, Tuesday, 17 November

Light rain. High 47°, low 39°.

Pressure30.21 inHg
Wind13.3 mph NW
Humidity52%
Visibility—
Dew point29°
Wed, 1850° / 36°0.05Light rain
50 °Light rain

Marietta, Wednesday, 18 November

Light rain. High 50°, low 36°.

Pressure30.21 inHg
Wind12.1 mph SE
Humidity52%
Visibility—
Dew point29°
Thu, 1944° / 43°0.24Rain
44 °Rain

Marietta, Thursday, 19 November

Rain. High 44°, low 43°.

Pressure30.15 inHg
Wind14.1 mph SE
Humidity92%
Visibility—
Dew point42°
Fri, 2047° / 42°0Light rain
47 °Light rain

Marietta, Friday, 20 November

Light rain. High 47°, low 42°.

Pressure30.09 inHg
Wind14.1 mph W
Humidity68%
Visibility—
Dew point36°
Sat, 2143° / 38°0Overcast
43 °Overcast

Marietta, Saturday, 21 November

Overcast. High 43°, low 38°.

Pressure30.21 inHg
Wind13 mph NW
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.