2025 Compare Climate & Weather:
Vancouver, WA vs Sunnyvale, CA

Highlights

On average, there are 260 sunny days per year in Sunnyvale. Vancouver averages 143 sunny days per year. The US average is 205 sunny days.

Sunnyvale, California gets 15.4 inches of rain, on average, per year. Vancouver, Washington gets 42.1 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Sunnyvale averages 0 inches of snow per year. Vancouver averages 2.7 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Sunnyvale, California
Summer High: the July high is around 80.3 degrees
Winter Low: the January low is 42.3
Rain: averages 15.4 inches of rain a year
Snow: averages 0 inches of snow a year

Vancouver, Washington
Summer High: the July high is around 79.4 degrees
Winter Low: the January low is 34.4
Rain: averages 42.1 inches of rain a year
Snow: averages 2.7 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Sunnyvale is 8.8 (10=best), which means it is more comfortable than most places in California.

The annual BestPlaces Comfort Index for Vancouver is 7.4 (10=best), which means it is one of the most pleasant places in Washington.

Today's Weather - Vancouver, WA

60°F

Today's Weather - Sunnyvale, CA

61°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Vancouver / Sunnyvale

August is the hottest month for Vancouver with an average high temperature of 80.3°, which ranks it as warmer than most places in Washington. In Vancouver, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Vancouver are July, August and September.

August is the hottest month for Sunnyvale with an average high temperature of 80.3°, which ranks it as cooler than most places in California. In Sunnyvale, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sunnyvale are June, September and July.

December has the coldest nighttime temperatures for Vancouver with an average of 33.6°. This is about average compared to other places in Washington.

December has the coldest nighttime temperatures for Sunnyvale with an average of 42.2°. This is warmer than most places in California.

In Vancouver, there are 9.9 days annually when the high temperature is over 90°, which is hotter than most places in Washington.

In Sunnyvale, there are 13.3 days annually when the high temperature is over 90°, which is cooler than most places in California.

In Vancouver, there are 46.7 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Washington.

In Sunnyvale, there are 2.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

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

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

November is the wettest month in Vancouver with 6.6 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Spring with 40% of yearly precipitation and 8% occurs in Autumn, which is the driest season. The annual rainfall of 42.1 inches in Vancouver means that it is about average compared to other places in Washington.


February is the wettest month in Sunnyvale with 3.1 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 56% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 15.4 inches in Sunnyvale means that it is drier than most places in California.

November is the rainiest month in Vancouver with 20.0 days of rain, and August is the driest month with only 4.0 rainy days. There are 163.9 rainy days annually in Vancouver, which is rainier than most places in Washington. The rainiest season is Spring when it rains 34% of the time and the driest is Autumn with only a 11% chance of a rainy day.

December is the rainiest month in Sunnyvale with 10.5 days of rain, and July is the driest month with only 0.2 rainy days. There are 62.6 rainy days annually in Sunnyvale, which is rainier than most places in California. The rainiest season is Spring when it rains 49% of the time and the driest is Autumn with only a 2% chance of a rainy day.

An annual snowfall of 2.7 inches in Vancouver means that it is less snowy than most places in Washington.

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

February is the snowiest month in Vancouver with 1.1 inches of snow, and 3 months of the year have significant snowfall.

Any measurable snowfall is a rare occurance in Sunnyvale.