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As of 13:08 CDT

Weather in Marietta, IL

75°Current weather

Marietta, Wednesday, 28 October, 13:08

Clear. Feels like 75°. High 75°, low 53°.

Pressure30.15 inHg
Wind10 mph S
Humidity51%
Visibility6.2 mi
Dew point55°
Thu, 2973° / 56°0Overcast
73 °Overcast

Marietta, Thursday, 29 October

Overcast. High 73°, low 56°.

Pressure30.12 inHg
Wind7.7 mph W
Humidity61%
Visibility6.2 mi
Dew point55°
Fri, 3069° / 48°0.07Light rain
69 °Light rain

Marietta, Friday, 30 October

Light rain. High 69°, low 48°.

Pressure30.27 inHg
Wind6.7 mph SE
Humidity66%
Visibility6.2 mi
Dew point50°
Sat, 3169° / 57°0Overcast
69 °Overcast

Marietta, Saturday, 31 October

Overcast. High 69°, low 57°.

Pressure30.24 inHg
Wind4.3 mph SW
Humidity71%
Visibility6.2 mi
Dew point58°
Sun, 0172° / 57°0Partly cloudy
72 °Partly cloudy

Marietta, Sunday, 1 November

Partly cloudy. High 72°, low 57°.

Pressure30.27 inHg
Wind6.8 mph E
Humidity56%
Visibility6.2 mi
Dew point51°
Mon, 0269° / 57°0.03Light rain
69 °Light rain

Marietta, Monday, 2 November

Light rain. High 69°, low 57°.

Pressure30.09 inHg
Wind13.4 mph SE
Humidity69%
Visibility—
Dew point54°
Tue, 0364° / 61°0.28Rain
64 °Rain

Marietta, Tuesday, 3 November

Rain. High 64°, low 61°.

Pressure29.80 inHg
Wind12.8 mph SE
Humidity90%
Visibility—
Dew point61°
Wed, 0462° / 58°1.22Heavy rain
62 °Heavy rain

Marietta, Wednesday, 4 November

Heavy rain. High 62°, low 58°.

Pressure29.68 inHg
Wind16.9 mph E
Humidity92%
Visibility—
Dew point59°
Thu, 0560° / 55°0.43Rain
60 °Rain

Marietta, Thursday, 5 November

Rain. High 60°, low 55°.

Pressure29.68 inHg
Wind13.9 mph N
Humidity89%
Visibility—
Dew point54°
Fri, 0655° / 45°0Overcast
55 °Overcast

Marietta, Friday, 6 November

Overcast. High 55°, low 45°.

Pressure30.03 inHg
Wind11.3 mph N
Humidity45%
Visibility—
Dew point31°
Sat, 0752° / 41°0Overcast
52 °Overcast

Marietta, Saturday, 7 November

Overcast. High 52°, low 41°.

Pressure30.27 inHg
Wind6.7 mph NE
Humidity48%
Visibility—
Dew point31°
Sun, 0853° / 38°0Overcast
53 °Overcast

Marietta, Sunday, 8 November

Overcast. High 53°, low 38°.

Pressure30.36 inHg
Wind9.6 mph SE
Humidity57%
Visibility—
Dew point35°
Mon, 0950° / 41°0.24Light rain
50 °Light rain

Marietta, Monday, 9 November

Light rain. High 50°, low 41°.

Pressure30.12 inHg
Wind16.8 mph SE
Humidity55%
Visibility—
Dew point33°
Tue, 1053° / 50°0.71Rain
53 °Rain

Marietta, Tuesday, 10 November

Rain. High 53°, low 50°.

Pressure29.77 inHg
Wind13.8 mph SE
Humidity92%
Visibility—
Dew point50°
Wed, 1147° / 40°0.13Light rain
47 °Light rain

Marietta, Wednesday, 11 November

Light rain. High 47°, low 40°.

Pressure30.06 inHg
Wind20.6 mph NE
Humidity86%
Visibility—
Dew point38°
Thu, 1245° / 39°0Overcast
45 °Overcast

Marietta, Thursday, 12 November

Overcast. High 45°, low 39°.

Pressure30.12 inHg
Wind12.6 mph N
Humidity71%
Visibility—
Dew point33°

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.