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As of 05:29 CDT

Weather in Marietta, IL

69°Current weather

Marietta, Sunday, 9 August, 05:29

Overcast. Feels like 70°. High 92°, low 69°.

Pressure29.97 inHg
Wind7.4 mph S
Humidity94%
Visibility6.2 mi
Dew point67°

10-day forecast for Marietta, IL: 61° to 93°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.

93°
Best day: Monday, August 10
66° · 1.66 in
Worst day: Friday, August 14

Tap any day below to see morning, afternoon, evening and overnight.

Mon, 1093° / 75°0Overcast
MorningClear79°feels 80°
AfternoonOvercast92°feels 101°
EveningOvercast80°feels 84°
OvernightClear80°feels 84°
93 °Overcast

Marietta, Monday, 10 August

Overcast. High 93°, low 75°.

Pressure29.88 inHg
Wind7.6 mph W
Humidity60%
Visibility6.2 mi
Dew point70°
Tue, 1193° / 70°0.02Light rain
MorningPartly cloudy73°feels 74°
AfternoonOvercast92°feels 101°
EveningOvercast84°feels 93°
OvernightClear75°feels 75°
93 °Light rain

Marietta, Tuesday, 11 August

Light rain. High 93°, low 70°.

Pressure29.83 inHg
Wind11.8 mph W
Humidity58%
Visibility6.2 mi
Dew point72°
Wed, 1284° / 73°0.18Rain
MorningOvercast76°feels 78°
AfternoonOvercast82°feels 88°
EveningOvercast78°feels 79°
OvernightLight rain76°feels 78°
84 °Rain

Marietta, Wednesday, 12 August

Rain. High 84°, low 73°.

Pressure29.83 inHg
Wind7.4 mph E
Humidity86%
Visibility6.2 mi
Dew point74°
Thu, 1384° / 64°0.04Light rain
MorningLight rain70°feels 70°
AfternoonLight rain82°feels 83°
EveningLight rain70°feels 71°
OvernightClear71°feels 72°
84 °Light rain

Marietta, Thursday, 13 August

Light rain. High 84°, low 64°.

Pressure29.97 inHg
Wind15.7 mph E
Humidity48%
Visibility—
Dew point60°
Fri, 1466° / 62°1.66Heavy rain
MorningHeavy rain63°feels 63°
AfternoonHeavy rain63°feels 63°
EveningHeavy rain65°feels 65°
OvernightHeavy rain62°feels 63°
66 °Heavy rain

Marietta, Friday, 14 August

Heavy rain. High 66°, low 62°.

Pressure30.15 inHg
Wind14.9 mph E
Humidity93%
Visibility—
Dew point60°
Sat, 1574° / 61°0.21Light rain
MorningLight rain65°feels 65°
AfternoonLight rain73°feels 74°
EveningLight rain73°feels 74°
OvernightLight rain67°feels 68°
74 °Light rain

Marietta, Saturday, 15 August

Light rain. High 74°, low 61°.

Pressure30.15 inHg
Wind12.6 mph SE
Humidity84%
Visibility—
Dew point66°
Sun, 1681° / 67°0.02Light rain
MorningLight rain71°feels 73°
AfternoonLight rain80°feels 84°
EveningLight rain76°feels 78°
OvernightLight rain72°feels 73°
81 °Light rain

Marietta, Sunday, 16 August

Light rain. High 81°, low 67°.

Pressure30.06 inHg
Wind7.7 mph SE
Humidity74%
Visibility—
Dew point70°
Mon, 1783° / 66°0Overcast
MorningOvercast71°feels 72°
AfternoonOvercast81°feels 83°
EveningOvercast77°feels 78°
OvernightOvercast70°feels 71°
83 °Overcast

Marietta, Monday, 17 August

Overcast. High 83°, low 66°.

Pressure30.09 inHg
Wind6.1 mph NE
Humidity62%
Visibility—
Dew point65°
Tue, 1886° / 66°0Overcast
MorningOvercast71°feels 72°
AfternoonOvercast83°feels 85°
EveningOvercast80°feels 83°
OvernightOvercast73°feels 74°
86 °Overcast

Marietta, Tuesday, 18 August

Overcast. High 86°, low 66°.

Pressure29.97 inHg
Wind10 mph SE
Humidity55%
Visibility—
Dew point63°

About this forecast

How reliable is a 10-day forecast?

The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.

What does the time-of-day table show?

Temperature in Marietta, IL around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.

How is the best day chosen?

We weigh the daytime high against precipitation: a warm, dry day scores highest.