2025 Compare Climate & Weather:
San Mateo, CA vs Daly City, CA

Highlights

On average, there are 261 sunny days per year in Daly City. San Mateo averages 265 sunny days per year. The US average is 205 sunny days.

Daly City, California gets 25.7 inches of rain, on average, per year. San Mateo, California gets 24.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Daly City averages 0 inches of snow per year. San Mateo averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Daly City, California
Summer High: the July high is around 66.5 degrees
Winter Low: the January low is 46.1
Rain: averages 25.7 inches of rain a year
Snow: averages 0 inches of snow a year

San Mateo, California
Summer High: the July high is around 74.1 degrees
Winter Low: the January low is 42.2
Rain: averages 24.4 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Daly City is 8.4 (10=best), which means it is more comfortable than most places in California.

The annual BestPlaces Comfort Index for San Mateo is 8.5 (10=best), which means it is more comfortable than most places in California.

Today's Weather - San Mateo, CA

64°F

Today's Weather - Daly City, CA

57°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: San Mateo / Daly City

August is the hottest month for San Mateo with an average high temperature of 74.5°, which ranks it as one of the coolest places in California. In San Mateo, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Mateo are August, September and July.

September is the hottest month for Daly City with an average high temperature of 69.0°, which ranks it as one of the coolest places in California. In Daly City, there are 0 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Daly City are September, August and October.

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

January has the coldest nighttime temperatures for Daly City with an average of 46.1°. This is one of the warmest places in California.

In San Mateo, there are 9.4 days annually when the high temperature is over 90°, which is cooler than most places in California.

In Daly City, there are 1.5 days annually when the high temperature is over 90°, which is one of the coolest places in California.

In San Mateo, there are 4.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Daly City, there are 0.3 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

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

January is the wettest month in San Mateo with 4.8 inches of rain, and the driest month is July with 0.1 inches. The wettest season is Spring with 57% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 24.4 inches in San Mateo means that it is wetter than most places in California.


January is the wettest month in Daly City with 5.0 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 58% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 25.7 inches in Daly City means that it is wetter than most places in California.

January is the rainiest month in San Mateo with 11.6 days of rain, and July is the driest month with only 1.7 rainy days. There are 76.9 rainy days annually in San Mateo, which is rainier than most places in California. The rainiest season is Spring when it rains 44% of the time and the driest is Autumn with only a 7% chance of a rainy day.

December is the rainiest month in Daly City with 11.1 days of rain, and July is the driest month with only 0.3 rainy days. There are 68.0 rainy days annually in Daly City, 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 4% chance of a rainy day.

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

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

Any measurable snowfall is a rare occurance in San Mateo.

Any measurable snowfall is a rare occurance in Daly City.