10-day forecast for Marietta, IA: 61° to 96°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
94°
Best day: Tuesday, August 11
70° · 1.3 in
Worst day: Thursday, August 13
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1090° / 71°0
Morning74°feels 75°
Afternoon87°feels 94°
Evening84°feels 90°
Overnight76°feels 78°
90 °
Marietta, Monday, 10 August
Overcast. High 90°, low 71°.
Pressure29.85 inHg
Wind15.3 mph E
Humidity76%
Visibility6.2 mi
Dew point73°
Tue, 1194° / 70°0
Morning75°feels 76°
Afternoon94°feels 97°
Evening81°feels 86°
Overnight71°feels 72°
94 °
Marietta, Tuesday, 11 August
Light rain. High 94°, low 70°.
Pressure29.74 inHg
Wind7.6 mph SW
Humidity47%
Visibility6.2 mi
Dew point66°
Wed, 1286° / 71°0
Morning74°feels 75°
Afternoon85°feels 89°
Evening79°feels 79°
Overnight72°feels 74°
86 °
Marietta, Wednesday, 12 August
Overcast. High 86°, low 71°.
Pressure29.85 inHg
Wind11.1 mph E
Humidity60%
Visibility6.2 mi
Dew point69°
Thu, 1370° / 66°1.3
Morning68°feels 70°
Afternoon68°feels 69°
Evening67°feels 67°
Overnight70°feels 71°
70 °
Marietta, Thursday, 13 August
Heavy rain. High 70°, low 66°.
Pressure29.94 inHg
Wind13.2 mph E
Humidity98%
Visibility—
Dew point67°
Fri, 1474° / 61°0.13
Morning64°feels 65°
Afternoon72°feels 72°
Evening69°feels 70°
Overnight65°feels 65°
74 °
Marietta, Friday, 14 August
Light rain. High 74°, low 61°.
Pressure30.09 inHg
Wind17.2 mph E
Humidity68%
Visibility—
Dew point60°
Sat, 1575° / 63°0.39
Morning65°feels 66°
Afternoon70°feels 71°
Evening74°feels 75°
Overnight69°feels 70°
75 °
Marietta, Saturday, 15 August
Rain. High 75°, low 63°.
Pressure30.09 inHg
Wind12.6 mph E
Humidity93%
Visibility—
Dew point66°
Sun, 1675° / 63°0
Morning66°feels 67°
Afternoon75°feels 75°
Evening72°feels 72°
Overnight64°feels 64°
75 °
Marietta, Sunday, 16 August
Overcast. High 75°, low 63°.
Pressure30.12 inHg
Wind13.7 mph N
Humidity72%
Visibility—
Dew point64°
Mon, 1777° / 61°0
Morning65°feels 65°
Afternoon76°feels 76°
Evening71°feels 71°
Overnight68°feels 68°
77 °
Marietta, Monday, 17 August
Overcast. High 77°, low 61°.
Pressure30.12 inHg
Wind6.8 mph S
Humidity62%
Visibility—
Dew point61°
Tue, 1884° / 61°0.01
Morning68°feels 68°
Afternoon80°feels 81°
Evening79°feels 84°
Overnight71°feels 72°
84 °
Marietta, Tuesday, 18 August
Light rain. High 84°, low 61°.
Pressure29.80 inHg
Wind7.5 mph S
Humidity67%
Visibility—
Dew point66°
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, IA 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.