2025 Compare Climate & Weather:
Greenville, SC vs Coralville, IA

Highlights

On average, there are 198 sunny days per year in Coralville. Greenville averages 220 sunny days per year. The US average is 205 sunny days.

Coralville, Iowa gets 36.9 inches of rain, on average, per year. Greenville, South Carolina gets 50.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Coralville averages 26.8 inches of snow per year. Greenville averages 2.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Coralville, Iowa
Summer High: the July high is around 85.1 degrees
Winter Low: the January low is 13.2
Rain: averages 36.9 inches of rain a year
Snow: averages 26.8 inches of snow a year

Greenville, South Carolina
Summer High: the July high is around 89.8 degrees
Winter Low: the January low is 30.9
Rain: averages 50.9 inches of rain a year
Snow: averages 2.5 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Coralville is 7.0 (10=best), which means it is more comfortable than most places in Iowa.

The annual BestPlaces Comfort Index for Greenville is 7.5 (10=best), which means it is one of the most pleasant places in South Carolina.

Today's Weather - Greenville, SC

55°F

Today's Weather - Coralville, IA

53°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Greenville / Coralville

July is the hottest month for Greenville with an average high temperature of 89.8°, which ranks it as cooler than most places in South Carolina. In Greenville, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Greenville are May, September and October.

July is the hottest month for Coralville with an average high temperature of 85.1°, which ranks it as warmer than most places in Iowa. In Coralville, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Coralville are September, June and August.

January has the coldest nighttime temperatures for Greenville with an average of 30.9°. This is colder than most places in South Carolina.

January has the coldest nighttime temperatures for Coralville with an average of 13.2°. This is warmer than most places in Iowa.

In Greenville, there are 40.6 days annually when the high temperature is over 90°, which is cooler than most places in South Carolina.

In Coralville, there are 16.4 days annually when the high temperature is over 90°, which is hotter than most places in Iowa.

In Greenville, there are 57.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in South Carolina.

In Coralville, there are 133.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Iowa.

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

In Coralville, there are 12.4 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Iowa.

July is the wettest month in Greenville with 4.9 inches of rain, and the driest month is April with 3.6 inches. The wettest season is Autumn with 28% of yearly precipitation and 24% occurs in Winter, which is the driest season. The annual rainfall of 50.9 inches in Greenville means that it is wetter than most places in South Carolina.


July is the wettest month in Coralville with 4.8 inches of rain, and the driest month is January with 1.0 inches. The wettest season is Autumn with 39% of yearly precipitation and 10% occurs in Spring, which is the driest season. The annual rainfall of 36.9 inches in Coralville means that it is wetter than most places in Iowa.

July is the rainiest month in Greenville with 10.5 days of rain, and October is the driest month with only 6.9 rainy days. There are 105.1 rainy days annually in Greenville, which is rainier than most places in South Carolina. The rainiest season is Autumn when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.

May is the rainiest month in Coralville with 11.2 days of rain, and February is the driest month with only 5.4 rainy days. There are 97.4 rainy days annually in Coralville, which is about average compared to other places in Iowa. The rainiest season is Summer when it rains 29% of the time and the driest is Spring with only a 19% chance of a rainy day.

An annual snowfall of 2.5 inches in Greenville means that it is one of the snowiest places in South Carolina.

An annual snowfall of 26.8 inches in Coralville means that it is less snowy than most places in Iowa.

January is the snowiest month in Greenville with 1.2 inches of snow, and 3 months of the year have significant snowfall.

December is the snowiest month in Coralville with 8.1 inches of snow, and 6 months of the year have significant snowfall.