2025 Compare Climate & Weather:
Dayton, WA vs Nampa, ID

Highlights

On average, there are 207 sunny days per year in Nampa. Dayton averages 176 sunny days per year. The US average is 205 sunny days.

Nampa, Idaho gets 10.7 inches of rain, on average, per year. Dayton, Washington gets 16.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Nampa averages 9.2 inches of snow per year. Dayton averages 14.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Nampa, Idaho
Summer High: the July high is around 91.3 degrees
Winter Low: the January low is 23.6
Rain: averages 10.7 inches of rain a year
Snow: averages 9.2 inches of snow a year

Dayton, Washington
Summer High: the July high is around 86.4 degrees
Winter Low: the January low is 26.3
Rain: averages 16.4 inches of rain a year
Snow: averages 14.6 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Dayton is 7.1 (10=best), which means it is about average compared to other places in Washington.

Today's Weather - Dayton, WA

54°F

Today's Weather - Nampa, ID

57°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Dayton / Nampa

July is the hottest month for Dayton with an average high temperature of 86.4°, which ranks it as warmer than most places in Washington. In Dayton, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Dayton are September, June and August.

July is the hottest month for Nampa with an average high temperature of 91.3°, which ranks it as warmer than most places in Idaho. In Nampa, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Nampa are September, May and June.

December has the coldest nighttime temperatures for Dayton with an average of 24.8°. This is colder than most places in Washington.

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

In Dayton, there are 28.1 days annually when the high temperature is over 90°, which is hotter than most places in Washington.

In Nampa, there are 47.8 days annually when the high temperature is over 90°, which is hotter than most places in Idaho.

In Dayton, there are 113.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Washington.

In Nampa, there are 116.6 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Idaho.

In Dayton, there are 1.9 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Washington.

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

November is the wettest month in Dayton with 2.2 inches of rain, and the driest month is July with 0.5 inches. The wettest season is Spring with 33% of yearly precipitation and 13% occurs in Autumn, which is the driest season. The annual rainfall of 16.4 inches in Dayton means that it is drier than most places in Washington.


December is the wettest month in Nampa with 1.5 inches of rain, and the driest month is July with 0.3 inches. The wettest season is Spring with 33% of yearly precipitation and 12% occurs in Autumn, which is the driest season. The annual rainfall of 10.7 inches in Nampa means that it is drier than most places in Idaho.

November is the rainiest month in Dayton with 14.1 days of rain, and August is the driest month with only 3.4 rainy days. There are 106.9 rainy days annually in Dayton, which is less rainy than most places in Washington. The rainiest season is Spring when it rains 33% of the time and the driest is Autumn with only a 13% chance of a rainy day.

December is the rainiest month in Nampa with 10.4 days of rain, and July is the driest month with only 2.3 rainy days. There are 80.1 rainy days annually in Nampa, which is less rainy than most places in Idaho. The rainiest season is Spring when it rains 34% of the time and the driest is Autumn with only a 12% chance of a rainy day.

An annual snowfall of 14.6 inches in Dayton means that it is snowier than most places in Washington.

An annual snowfall of 9.2 inches in Nampa means that it is one of the least snowy places in Idaho.

December is the snowiest month in Dayton with 5.1 inches of snow, and 5 months of the year have significant snowfall.

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