Warm
Average highs sit around 29°C, giving warm days by monthly-average standards.
Weather Guide
Marietta, Ohio, United States Average Monthly Weather
Weather score45Mixed annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 18°C, sunshine averages 5.9h per day, and rainfall totals about 1037mm.
Annual weather
Annual averages
Temp
18°C
Rain
1037mm
Annual total
Sun
5.9h
Weather score
45
Mixed avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 104mm, so some wet days are possible.
Some sun
Sunshine averages 7.6h per day, enough for a balanced month.
Map
Weather map
Compare Marietta, Ohio, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August29°C average high
August is one of Marietta's warmest months, with daytime heat above the yearly average.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
August104mm average rain
August is wetter than Marietta's yearly average, so flexible plans matter more.
Driest monthsJanuary to February, April, June, and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August7.6 hours average sun
August is brighter than Marietta's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
August74 weather score
August is one of Marietta's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
