2025 Compare Climate & Weather:
Boise City, ID vs Loudon, TN

Highlights

On average, there are 204 sunny days per year in Loudon. Boise City averages 206 sunny days per year. The US average is 205 sunny days.

Loudon, Tennessee gets 53.2 inches of rain, on average, per year. Boise City, Idaho gets 13 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Loudon averages 4.8 inches of snow per year. Boise City averages 17.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Loudon, Tennessee
Summer High: the July high is around 88.5 degrees
Winter Low: the January low is 27.7
Rain: averages 53.2 inches of rain a year
Snow: averages 4.8 inches of snow a year

Boise City, Idaho
Summer High: the July high is around 91.6 degrees
Winter Low: the January low is 23.7
Rain: averages 13 inches of rain a year
Snow: averages 17.5 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Loudon is 7.3 (10=best), which means it is about average compared to other places in Tennessee.

The annual BestPlaces Comfort Index for Boise is 7.3 (10=best), which means it is one of the most pleasant places in Idaho.

Today's Weather - Boise City, ID

64°F

Today's Weather - Loudon, TN

68°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Boise City / Loudon

July is the hottest month for Boise with an average high temperature of 91.6°, which ranks it as one of the hottest places in Idaho. In Boise, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Boise are September, June and May.

July is the hottest month for Loudon with an average high temperature of 88.5°, which ranks it as about average compared to other places in Tennessee. In Loudon, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Loudon are May, September and October.

December has the coldest nighttime temperatures for Boise with an average of 22.7°. This is warmer than most places in Idaho.

January has the coldest nighttime temperatures for Loudon with an average of 27.7°. This is warmer than most places in Tennessee.

In Boise, there are 51.0 days annually when the high temperature is over 90°, which is one of the hottest places in Idaho.

In Loudon, there are 33.2 days annually when the high temperature is over 90°, which is about average compared to other places in Tennessee.

In Boise, there are 114.9 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Idaho.

In Loudon, there are 77.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Tennessee.

In Boise, there are 2.8 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Idaho.

In Loudon, there are 0.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Tennessee.

December is the wettest month in Boise with 1.9 inches of rain, and the driest month is July with 0.3 inches. The wettest season is Spring with 35% of yearly precipitation and 10% occurs in Autumn, which is the driest season. The annual rainfall of 13.0 inches in Boise means that it is about average compared to other places in Idaho.


December is the wettest month in Loudon with 5.3 inches of rain, and the driest month is October with 2.9 inches. The wettest season is Spring with 28% of yearly precipitation and 21% occurs in Winter, which is the driest season. The annual rainfall of 53.2 inches in Loudon means that it is about average compared to other places in Tennessee.

December is the rainiest month in Boise with 11.3 days of rain, and August is the driest month with only 2.3 rainy days. There are 87.0 rainy days annually in Boise, which is less rainy than most places in Idaho. The rainiest season is Spring when it rains 35% of the time and the driest is Autumn with only a 12% chance of a rainy day.

July is the rainiest month in Loudon with 11.5 days of rain, and September is the driest month with only 7.7 rainy days. There are 121.5 rainy days annually in Loudon, which is rainier than most places in Tennessee. The rainiest season is Spring 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 17.5 inches in Boise means that it is less snowy than most places in Idaho.

An annual snowfall of 4.8 inches in Loudon means that it is snowier than most places in Tennessee.

December is the snowiest month in Boise with 6.4 inches of snow, and 5 months of the year have significant snowfall.

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