As of 00:45 EDT

Weather in Marietta, OH

74°Current weather

Marietta, Sunday, 9 August, 00:45

Light rain. Feels like 76°. High 89°, low 68°.

Pressure30.06 inHg
Wind2.9 mph W
Humidity98%
Visibility6.2 mi
Dew point74°

Monthly outlook for Marietta, OH: average high 83.2°, average low 62.2°. That is 0.6° above the climate normal for August. Precipitation is expected on 8 days (about 4.7 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 10 August (91.7°), the coolest 22 August (53.5°).

83.2°/62.2°
Average high / low
+0.6°
Above normal
8 / 6
Wet days / normal
4.7 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 August – 18 August83.7°82.2°+0.9°
19 August – 28 August82.3°82.1°+0.1°
29 August – 7 Septemberat normal80.7°

August records over 66 years

101.1°17 August 1988All-time high
48.7°29 August 1986All-time low
Mon, 1092° / 67°0.56Heavy rain
92 °Heavy rain

Marietta, Monday, 10 August

Heavy rain. High 92°, low 67°.

Pressure30.06 inHg
Wind7.8 mph SW
Humidity61%
Visibility6.2 mi
Dew point70°
Tue, 1182° / 66°0.85Heavy rain
82 °Heavy rain

Marietta, Tuesday, 11 August

Heavy rain. High 82°, low 66°.

Pressure30.00 inHg
Wind7.8 mph W
Humidity76%
Visibility6.2 mi
Dew point68°
Wed, 1285° / 66°2.47Heavy rain
85 °Heavy rain

Marietta, Wednesday, 12 August

Heavy rain. High 85°, low 66°.

Pressure29.83 inHg
Wind9.3 mph SW
Humidity85%
Visibility6.2 mi
Dew point71°
Thu, 1380° / 64°0.1Light rain
80 °Light rain

Marietta, Thursday, 13 August

Light rain. High 80°, low 64°.

Pressure29.97 inHg
Wind8 mph NW
Humidity45%
Visibility
Dew point55°
Fri, 1479° / 60°0Overcast
79 °Overcast

Marietta, Friday, 14 August

Overcast. High 79°, low 60°.

Pressure30.09 inHg
Wind4 mph NW
Humidity46%
Visibility
Dew point53°
Sat, 1579° / 56°0Overcast
79 °Overcast

Marietta, Saturday, 15 August

Overcast. High 79°, low 56°.

Pressure30.24 inHg
Wind5.3 mph NW
Humidity42%
Visibility
Dew point52°
Sun, 1683° / 57°0Mostly clear
83 °Mostly clear

Marietta, Sunday, 16 August

Mostly clear. High 83°, low 57°.

Pressure30.15 inHg
Wind3.7 mph NE
Humidity38%
Visibility
Dew point52°
Mon, 1784° / 66°0Overcast
84 °Overcast

Marietta, Monday, 17 August

Overcast. High 84°, low 66°.

Pressure30.00 inHg
Wind4.5 mph W
Humidity44%
Visibility
Dew point58°
Tue, 1884° / 61°0Partly cloudy
84 °Partly cloudy

Marietta, Tuesday, 18 August

Partly cloudy. High 84°, low 61°.

Pressure30.00 inHg
Wind3.2 mph N
Humidity50%
Visibility
Dew point61°
Wed, 1988° / 63°0.09Light rain
88 °Light rain

Marietta, Wednesday, 19 August

Light rain. High 88°, low 63°.

Pressure29.85 inHg
Wind8.6 mph W
Humidity48%
Visibility
Dew point62°
Thu, 2069° / 59°0.06Light rain
69 °Light rain

Marietta, Thursday, 20 August

Light rain. High 69°, low 59°.

Pressure29.91 inHg
Wind9.1 mph NW
Humidity63%
Visibility
Dew point54°
Fri, 2178° / 56°0.01Light rain
78 °Light rain

Marietta, Friday, 21 August

Light rain. High 78°, low 56°.

Pressure30.00 inHg
Wind7.2 mph N
Humidity44%
Visibility
Dew point52°
Sat, 2284° / 53°0.02Light rain
84 °Light rain

Marietta, Saturday, 22 August

Light rain. High 84°, low 53°.

Pressure30.00 inHg
Wind5 mph SW
Humidity41%
Visibility
Dew point53°
Sun, 2391° / 66°0.31Light rain
91 °Light rain

Marietta, Sunday, 23 August

Light rain. High 91°, low 66°.

Pressure29.94 inHg
Wind7.4 mph W
Humidity79%
Visibility
Dew point72°
Mon, 2485° / 67°0Overcast
85 °Overcast

Marietta, Monday, 24 August

Overcast. High 85°, low 67°.

Pressure30.00 inHg
Wind6.3 mph W
Humidity43%
Visibility
Dew point58°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 65°0.07Climate normal
82 °Climate normal

Marietta, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0.07 in
Chance of precipitation27%
Record high93° (2024)
Record low55° (1977)
Wed, 2683° / 65°0.09Climate normal
83 °Climate normal

Marietta, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high83°
Average low65°
Average precipitation0.09 in
Chance of precipitation30%
Record high94° (2024)
Record low55° (2025)
Thu, 2783° / 66°0.13Climate normal
83 °Climate normal

Marietta, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high83°
Average low66°
Average precipitation0.13 in
Chance of precipitation35%
Record high96° (2024)
Record low52° (2025)
Fri, 2883° / 66°0.13Climate normal
83 °Climate normal

Marietta, Friday, 28 August

Climate normal for this date — 60-year average.

Average high83°
Average low66°
Average precipitation0.13 in
Chance of precipitation28%
Record high97° (2024)
Record low52° (2025)
Sat, 2982° / 65°0.1Climate normal
82 °Climate normal

Marietta, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0.1 in
Chance of precipitation33%
Record high93° (2024)
Record low49° (1986)
Sun, 3082° / 65°0.1Climate normal
82 °Climate normal

Marietta, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0.1 in
Chance of precipitation32%
Record high96° (2024)
Record low49° (1986)
Mon, 3181° / 64°0.11Climate normal
81 °Climate normal

Marietta, Monday, 31 August

Climate normal for this date — 60-year average.

Average high81°
Average low64°
Average precipitation0.11 in
Chance of precipitation30%
Record high94° (1993)
Record low52° (1976)
Tue, 0181° / 64°0.09Climate normal
81 °Climate normal

Marietta, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high81°
Average low64°
Average precipitation0.09 in
Chance of precipitation33%
Record high93° (2010)
Record low51° (1967)
Wed, 0281° / 64°0.11Climate normal
81 °Climate normal

Marietta, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high81°
Average low64°
Average precipitation0.11 in
Chance of precipitation37%
Record high95° (2010)
Record low51° (1967)
Thu, 0381° / 64°0.09Climate normal
81 °Climate normal

Marietta, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high81°
Average low64°
Average precipitation0.09 in
Chance of precipitation32%
Record high94° (2011)
Record low51° (1967)
Fri, 0480° / 64°0.07Climate normal
80 °Climate normal

Marietta, Friday, 4 September

Climate normal for this date — 60-year average.

Average high80°
Average low64°
Average precipitation0.07 in
Chance of precipitation23%
Record high91° (2018)
Record low51° (1997)
Sat, 0580° / 63°0.11Climate normal
80 °Climate normal

Marietta, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high80°
Average low63°
Average precipitation0.11 in
Chance of precipitation32%
Record high93° (2007)
Record low51° (1997)
Sun, 0680° / 62°0.11Climate normal
80 °Climate normal

Marietta, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high80°
Average low62°
Average precipitation0.11 in
Chance of precipitation28%
Record high95° (2007)
Record low50° (1984)
Mon, 0780° / 62°0.08Climate normal
80 °Climate normal

Marietta, Monday, 7 September

Climate normal for this date — 60-year average.

Average high80°
Average low62°
Average precipitation0.08 in
Chance of precipitation22%
Record high92° (2010)
Record low49° (2025)

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, OH 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, OH 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.