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.

August is the hottest month for Kirkland with an average high temperature of 76.5°, which ranks it as about average compared to other places in Washington. In Kirkland, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Kirkland are August, July and September.

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

December has the coldest nighttime temperatures for Kirkland with an average of 35.1°. This is warmer 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 Kirkland, there are 1.8 days annually when the high temperature is over 90°, which is cooler than most 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 Kirkland, there are 30.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most 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.

In Kirkland, there are 0.0 days annually when the nighttime low temperature falls below zero°, which 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 wettest month in Kirkland with 6.4 inches of rain, and the driest month is July with 1.0 inches. The wettest season is Spring with 37% of yearly precipitation and 10% occurs in Autumn, which is the driest season. The annual rainfall of 40.6 inches in Kirkland means that it is about average compared to other places in Washington.

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.

November is the rainiest month in Kirkland with 19.2 days of rain, and August is the driest month with only 5.6 rainy days. There are 161.7 rainy days annually in Kirkland, which is about average compared to other places in Washington. The rainiest season is Spring when it rains 32% of the time and the driest is Autumn with only a 14% chance of a rainy day.

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

An annual snowfall of 3.7 inches in Kirkland means that it is less snowy than most places in Washington.

Any measurable snowfall is a rare occurance in Sunnyvale.

December is the snowiest month in Kirkland with 1.8 inches of snow, and 4 months of the year have significant snowfall.

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