2025 Compare Climate & Weather:
Salem, OR vs Union, SC

Highlights

On average, there are 224 sunny days per year in Union. Salem averages 154 sunny days per year. The US average is 205 sunny days.

Union, South Carolina gets 44.7 inches of rain, on average, per year. Salem, Oregon gets 44.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Union averages 2.2 inches of snow per year. Salem averages 3.9 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Union, South Carolina
Summer High: the July high is around 91.4 degrees
Winter Low: the January low is 29.9
Rain: averages 44.7 inches of rain a year
Snow: averages 2.2 inches of snow a year

Salem, Oregon
Summer High: the July high is around 81.1 degrees
Winter Low: the January low is 34.8
Rain: averages 44.9 inches of rain a year
Snow: averages 3.9 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Salem is 7.4 (10=best), which means it is more comfortable than most places in Oregon.

Today's Weather - Salem, OR

62°F

Today's Weather - Union, SC

66°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Salem / Union

August is the hottest month for Salem with an average high temperature of 81.6°, which ranks it as cooler than most places in Oregon. In Salem, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Salem are September, July and August.

July is the hottest month for Union with an average high temperature of 91.4°, which ranks it as about average compared to other places in South Carolina. In Union, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Union are April, May and October.

December has the coldest nighttime temperatures for Salem with an average of 34.0°. This is warmer than most places in Oregon.

January has the coldest nighttime temperatures for Union with an average of 29.9°. This is colder than most places in South Carolina.

In Salem, there are 12.5 days annually when the high temperature is over 90°, which is cooler than most places in Oregon.

In Union, there are 55.3 days annually when the high temperature is over 90°, which is about average compared to other places in South Carolina.

In Salem, there are 46.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Oregon.

In Union, there are 70.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in South Carolina.

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

In Union, 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.

December is the wettest month in Salem with 7.6 inches of rain, and the driest month is July with 0.5 inches. The wettest season is Spring with 43% of yearly precipitation and 6% occurs in Autumn, which is the driest season. The annual rainfall of 44.9 inches in Salem means that it is wetter than most places in Oregon.


March is the wettest month in Union with 4.5 inches of rain, and the driest month is May with 3.0 inches. The wettest season is Spring with 26% of yearly precipitation and 24% occurs in Summer, which is the driest season. The annual rainfall of 44.7 inches in Union means that it is drier than most places in South Carolina.

November is the rainiest month in Salem with 19.2 days of rain, and August is the driest month with only 3.2 rainy days. There are 151.5 rainy days annually in Salem, which is rainier than most places in Oregon. The rainiest season is Spring when it rains 35% of the time and the driest is Autumn with only a 10% chance of a rainy day.

July is the rainiest month in Union with 9.9 days of rain, and October is the driest month with only 6.6 rainy days. There are 102.4 rainy days annually in Union, which is about average compared to other places in South Carolina. The rainiest season is Autumn when it rains 27% of the time and the driest is Winter with only a 21% chance of a rainy day.

An annual snowfall of 3.9 inches in Salem means that it is about average compared to other places in Oregon.

An annual snowfall of 2.2 inches in Union means that it is snowier than most places in South Carolina.

February is the snowiest month in Salem with 1.9 inches of snow, and 3 months of the year have significant snowfall.

January is the snowiest month in Union with 1.0 inches of snow, and 2 months of the year have significant snowfall.