2025 Compare Climate & Weather:
Vacaville, CA vs Post Falls, ID

Highlights

On average, there are 174 sunny days per year in Post Falls. Vacaville averages 260 sunny days per year. The US average is 205 sunny days.

Post Falls, Idaho gets 22.4 inches of rain, on average, per year. Vacaville, California gets 25.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Post Falls averages 39.9 inches of snow per year. Vacaville averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Post Falls, Idaho
Summer High: the July high is around 83.1 degrees
Winter Low: the January low is 24.4
Rain: averages 22.4 inches of rain a year
Snow: averages 39.9 inches of snow a year

Vacaville, California
Summer High: the July high is around 93.4 degrees
Winter Low: the January low is 38.7
Rain: averages 25.2 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Post Falls is 6.8 (10=best), which means it is more comfortable than most places in Idaho.

The annual BestPlaces Comfort Index for Vacaville is 8.2 (10=best), which means it is about average compared to other places in California.

Today's Weather - Vacaville, CA

60°F

Today's Weather - Post Falls, ID

46°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Vacaville / Post Falls

July is the hottest month for Vacaville with an average high temperature of 93.4°, which ranks it as warmer than most places in California. In Vacaville, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Vacaville are October, May and April.

August is the hottest month for Post Falls with an average high temperature of 83.3°, which ranks it as cooler than most places in Idaho. In Post Falls, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Post Falls are September, June and July.

December has the coldest nighttime temperatures for Vacaville with an average of 38.6°. This is about average compared to other places in California.

December has the coldest nighttime temperatures for Post Falls with an average of 23.1°. This is one of the warmest places in Idaho.

In Vacaville, there are 77.5 days annually when the high temperature is over 90°, which is hotter than most places in California.

In Post Falls, there are 15.9 days annually when the high temperature is over 90°, which is about average compared to other places in Idaho.

In Vacaville, there are 11.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Post Falls, there are 132.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Idaho.

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

In Post Falls, there are 2.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Idaho.

January is the wettest month in Vacaville with 5.1 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 60% of yearly precipitation and 0% occurs in Autumn, which is the driest season. The annual rainfall of 25.2 inches in Vacaville means that it is wetter than most places in California.


November is the wettest month in Post Falls with 3.2 inches of rain, and the driest month is August with 0.8 inches. The wettest season is Spring with 34% of yearly precipitation and 16% occurs in Autumn, which is the driest season. The annual rainfall of 22.4 inches in Post Falls means that it is wetter than most places in Idaho.

January is the rainiest month in Vacaville with 12.0 days of rain, and July is the driest month with only 0.0 rainy days. There are 64.5 rainy days annually in Vacaville, which is rainier than most places in California. The rainiest season is Spring when it rains 52% of the time and the driest is Autumn with only a 2% chance of a rainy day.

November is the rainiest month in Post Falls with 14.6 days of rain, and August is the driest month with only 4.3 rainy days. There are 118.4 rainy days annually in Post Falls, which is rainier than most places in Idaho. The rainiest season is Spring when it rains 31% of the time and the driest is Autumn with only a 15% chance of a rainy day.

There is rarely any recorded snowfall in Vacaville, ranking it as one of the least snowy places in California.

An annual snowfall of 39.9 inches in Post Falls means that it is about average compared to other places in Idaho.

Any measurable snowfall is a rare occurance in Vacaville.

December is the snowiest month in Post Falls with 14.6 inches of snow, and 6 months of the year have significant snowfall.