2025 Compare Climate & Weather:
Portsmouth, VA vs Smithton, IL

Highlights

On average, there are 201 sunny days per year in Smithton. Portsmouth averages 217 sunny days per year. The US average is 205 sunny days.

Smithton, Illinois gets 42.9 inches of rain, on average, per year. Portsmouth, Virginia gets 47.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Smithton averages 12.1 inches of snow per year. Portsmouth averages 5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Smithton, Illinois
Summer High: the July high is around 89 degrees
Winter Low: the January low is 23
Rain: averages 42.9 inches of rain a year
Snow: averages 12.1 inches of snow a year

Portsmouth, Virginia
Summer High: the July high is around 88.3 degrees
Winter Low: the January low is 33.4
Rain: averages 47.4 inches of rain a year
Snow: averages 5 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Smithton is 7.2 (10=best), which means it is one of the most pleasant places in Illinois.

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

Today's Weather - Portsmouth, VA

57°F

Today's Weather - Smithton, IL

54°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Portsmouth / Smithton

July is the hottest month for Portsmouth with an average high temperature of 88.3°, which ranks it as warmer than most places in Virginia. In Portsmouth, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Portsmouth are May, September and June.

July is the hottest month for Smithton with an average high temperature of 89.0°, which ranks it as one of the hottest places in Illinois. In Smithton, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Smithton are May, September and June.

January has the coldest nighttime temperatures for Portsmouth with an average of 33.4°. This is one of the warmest places in Virginia.

January has the coldest nighttime temperatures for Smithton with an average of 23.0°. This is one of the warmest places in Illinois.

In Portsmouth, there are 30.1 days annually when the high temperature is over 90°, which is hotter than most places in Virginia.

In Smithton, there are 40.0 days annually when the high temperature is over 90°, which is one of the hottest places in Illinois.

In Portsmouth, there are 38.8 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Virginia.

In Smithton, there are 94.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Illinois.

In Portsmouth, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Virginia.

In Smithton, there are 1.8 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Illinois.

August is the wettest month in Portsmouth with 5.9 inches of rain, and the driest month is February with 3.1 inches. The wettest season is Autumn with 32% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 47.4 inches in Portsmouth means that it is one of the wettest places in Virginia.


May is the wettest month in Smithton with 4.9 inches of rain, and the driest month is January with 2.4 inches. The wettest season is Summer with 28% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 42.9 inches in Smithton means that it is wetter than most places in Illinois.

July is the rainiest month in Portsmouth with 11.0 days of rain, and October is the driest month with only 7.4 rainy days. There are 115.2 rainy days annually in Portsmouth, which is about average compared to other places in Virginia. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 21% chance of a rainy day.

May is the rainiest month in Smithton with 11.0 days of rain, and February is the driest month with only 6.6 rainy days. There are 99.4 rainy days annually in Smithton, which is less rainy than most places in Illinois. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 22% chance of a rainy day.

An annual snowfall of 5.0 inches in Portsmouth means that it is one of the least snowy places in Virginia.

An annual snowfall of 12.1 inches in Smithton means that it is less snowy than most places in Illinois.

February is the snowiest month in Portsmouth with 2.1 inches of snow, and 3 months of the year have significant snowfall.

January is the snowiest month in Smithton with 4.0 inches of snow, and 4 months of the year have significant snowfall.