Which is the hottest month in Marietta?

The hottest time of year in Marietta is normally July. Expect maximum daytime temperatures to reach 30°C with moderate heat and humidity.

Which month has the most rain in Marietta?

In terms of rainfall, July is usually the wettest month in Marietta with 110mm on average. There are normally 12 days in July with some rain.

When is it sunniest in Marietta?

The sunniest time of year in Marietta is normally June with bright sunshine on average for 56% of daylight hours; that's 8 hours of sunshine per day.

Best time to visit Marietta

Q: When is the best time to visit Marietta?

The best time to visit Marietta is May, June, July and August based on the following average weather conditions. Daily hours of sunshine = 10 hours or more.

Find the best time to visit Marietta and plan your perfect trip in 2025/2026. Get holiday inspiration, weather guides, travel advice and find great deals.

Marietta by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Ohio

Carrentals.co.uk: up to 20% off late summer rentals

Sale

Save up to 20% on summer car hire with Carrentals.co.uk
Check out pick ups across the UK, Portugal, Spain & more
Travel before 2nd September 2025 (inclusive)

Go to Carrentals.co.uk deal >>

Expires at 23:59 on Wednesday 10th Sep 2025 · View all Carrentals.co.uk offers

When is the best time to visit Marietta?

The best time to visit Marietta is May, June, July and August based on the following average weather conditions.

Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

0.5
Jan
0.5
Feb
2.5
Mar
3
Apr
4
May
4
Jun
4
Jul
4
Aug
3
Sep
2.5
Oct
0.5
Nov
0
Dec

Change criteria

Hours of Sunshine (daily)

4
Jan
5
Feb
6
Mar
7
Apr
8
May
8
Jun
8
Jul
8
Aug
7
Sep
6
Oct
4
Nov
3
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Ohio (Marietta) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)