2025 Compare Climate & Weather:
Marietta, OH vs Green Valley, AZ

Highlights

On average, there are 280 sunny days per year in Green Valley. Marietta averages 172 sunny days per year. The US average is 205 sunny days.

Green Valley, Arizona gets 14.3 inches of rain, on average, per year. Marietta, Ohio gets 42.1 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Green Valley averages 0.2 inches of snow per year. Marietta averages 20.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Green Valley, Arizona
Summer High: the July high is around 98.6 degrees
Winter Low: the January low is 36.2
Rain: averages 14.3 inches of rain a year
Snow: averages 0.2 inches of snow a year

Marietta, Ohio
Summer High: the July high is around 84.8 degrees
Winter Low: the January low is 22.1
Rain: averages 42.1 inches of rain a year
Snow: averages 20.3 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Green Valley is 7.7 (10=best), which means it is more comfortable than most places in Arizona.

The annual BestPlaces Comfort Index for Marietta is 7.1 (10=best), which means it is more comfortable than most places in Ohio.

Today's Weather - Marietta, OH

42°F

Today's Weather - Green Valley, AZ

64°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Marietta / Green Valley

July is the hottest month for Marietta with an average high temperature of 84.8°, which ranks it as warmer than most places in Ohio. In Marietta, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Marietta are September, June and May.

June is the hottest month for Green Valley with an average high temperature of 99.2°, which ranks it as about average compared to other places in Arizona. In Green Valley, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Green Valley are April, March and November.

January has the coldest nighttime temperatures for Marietta with an average of 22.1°. This is one of the warmest places in Ohio.

December has the coldest nighttime temperatures for Green Valley with an average of 35.6°. This is warmer than most places in Arizona.

In Marietta, there are 13.8 days annually when the high temperature is over 90°, which is hotter than most places in Ohio.

In Green Valley, there are 138.7 days annually when the high temperature is over 90°, which is about average compared to other places in Arizona.

In Marietta, there are 111.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Ohio.

In Green Valley, there are 29.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Arizona.

In Marietta, there are 1.9 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Ohio.

In Green Valley, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Arizona.

July is the wettest month in Marietta with 4.4 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Autumn with 29% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 42.1 inches in Marietta means that it is wetter than most places in Ohio.


July is the wettest month in Green Valley with 3.2 inches of rain, and the driest month is April with 0.3 inches. The wettest season is Autumn with 45% of yearly precipitation and 11% occurs in Summer, which is the driest season. The annual rainfall of 14.3 inches in Green Valley means that it is wetter than most places in Arizona.

January is the rainiest month in Marietta with 14.7 days of rain, and September is the driest month with only 9.3 rainy days. There are 145.3 rainy days annually in Marietta, which is rainier than most places in Ohio. The rainiest season is Spring when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.

August is the rainiest month in Green Valley with 10.2 days of rain, and May is the driest month with only 1.6 rainy days. There are 53.5 rainy days annually in Green Valley, which is rainier than most places in Arizona. The rainiest season is Autumn when it rains 41% of the time and the driest is Summer with only a 14% chance of a rainy day.

An annual snowfall of 20.3 inches in Marietta means that it is less snowy than most places in Ohio.

An annual snowfall of 0.2 inches in Green Valley means that it is less snowy than most places in Arizona.

January is the snowiest month in Marietta with 7.7 inches of snow, and 6 months of the year have significant snowfall.

February is the snowiest month in Green Valley with 0.1 inches of snow, and no months of the year have significant snowfall.