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2024 Compare Climate & Weather:
Seattle, WA vs South San Francisco, CA

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Highlights

On average, there are 259 sunny days per year in South San Francisco. Seattle averages 152 sunny days per year. The US average is 205 sunny days.

South San Francisco, California gets 21.7 inches of rain, on average, per year. Seattle, Washington gets 38 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

South San Francisco averages 0 inches of snow per year. Seattle averages 4.6 inches of snow per year. The US average is 27.8 inches of snow per year.


Weather Highlights

South San Francisco, California
Summer High:
the July high is around 66.7 degrees
Winter Low: the January low is 45
Rain: averages 21.7 inches of rain a year
Snow: averages 0 inches of snow a year

Seattle, Washington
Summer High:
the July high is around 75.8 degrees
Winter Low: the January low is 37
Rain: averages 38 inches of rain a year
Snow: averages 4.6 inches of snow a year


BESTPLACES COMFORT INDEX
South San Francisco

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

8.4 / 10
September, August and July are the most pleasant months in South San Francisco, while January and December are the least comfortable months.

Seattle

The annual BestPlaces Comfort Index for Seattle is 7.5 (10=best), which means it is one of the most pleasant places in Washington.

7.5 / 10
August, July and September are the most pleasant months in Seattle, while December and January are the least comfortable months.


Today's Weather - Seattle, WA

6 AM PST

Mostly Cloudy then Chance Light Rain

54°F

DAYDESCRIPTIONHIGH / LOWWIND
TodayMostly Cloudy then Chance Light Rain65° / 46°S 5 to 18 mph
FridayMostly Sunny63° / 48°S 6 mph
SaturdayChance Light Rain56° / 46°SW 7 mph
SundaySlight Chance Light Rain61° / 45°SE 3 mph
MondayMostly Sunny then Slight Chance Light Rain65° / 49°SSW 6 mph
TuesdayChance Light Rain61° / 48°SSW 7 mph
WednesdayChance Light Rain63° / 48°SSW 7 mph

Today's Weather - South San Francisco, CA

6 AM PST

Sunny

54°F

DAYDESCRIPTIONHIGH / LOWWIND
TodaySunny69° / 52°SW 5 to 12 mph
FridayMostly Sunny69° / 52°SW 5 to 9 mph
SaturdaySunny68° / 52°SW 5 to 13 mph
SundaySunny68° / 51°WSW 3 to 12 mph
MondaySunny68° / 52°W 5 to 13 mph
TuesdaySunny68° / 52°W 5 to 14 mph
WednesdaySunny67° / 51°W 6 to 15 mph

Average Monthly High / Low (°F)
MonthSeattle, WASouth San Francisco, CA
January48° / 37°57° / 45°
February51° / 37°59° / 47°
March54° / 40°61° / 48°
April59° / 43°62° / 49°
May65° / 48°64° / 51°
June70° / 53°66° / 53°
July76° / 57°67° / 55°
August76° / 57°68° / 56°
September71° / 53°69° / 55°
October60° / 46°68° / 53°
November52° / 40°63° / 49°
December46° / 36°57° / 45°

Hot, Freezing, Rainy, Snowy Days: Seattle / South San Francisco
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 06 / 018 / 111 / 0
February0 / 05 / 015 / 111 / 0
March0 / 02 / 017 / 100 / 0
April0 / 00 / 015 / 60 / 0
May0 / 00 / 012 / 40 / 0
June0 / 00 / 010 / 10 / 0
July1 / 00 / 06 / 00 / 0
August0 / 00 / 05 / 10 / 0
September0 / 10 / 08 / 10 / 0
October0 / 00 / 013 / 30 / 0
November0 / 03 / 019 / 80 / 0
December0 / 07 / 018 / 111 / 0
August is the hottest month for Seattle with an average high temperature of 76.3°, which ranks it as cooler than most places in Washington. In Seattle, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Seattle are August, July and September.

September is the hottest month for South San Francisco with an average high temperature of 69.3°, which ranks it as one of the coolest places in California. In South San Francisco, there are 0 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for South San Francisco are September, October and August.


December has the coldest nighttime temperatures for Seattle with an average of 35.9°. This is one of the warmest places in Washington.

January has the coldest nighttime temperatures for South San Francisco with an average of 45.0°. This is one of the warmest places in California.



In Seattle, there are 1.7 days annually when the high temperature is over 90°, which is cooler than most places in Washington.

In South San Francisco, there are 1.8 days annually when the high temperature is over 90°, which is one of the coolest places in California.



In Seattle, there are 24.0 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Washington.

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



In Seattle, 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 South San Francisco, 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 Seattle with 6.2 inches of rain, and the driest month is July with 0.8 inches. The wettest season is Spring with 39% of yearly precipitation and 9% occurs in Autumn, which is the driest season. The annual rainfall of 38.0 inches in Seattle means that it is about average compared to other places in Washington.


January is the wettest month in South San Francisco with 4.3 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 21.7 inches in South San Francisco means that it is wetter than most places in California.


November is the rainiest month in Seattle with 18.7 days of rain, and August is the driest month with only 5.3 rainy days. There are 155.3 rainy days annually in Seattle, which is about average compared to other 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 South San Francisco with 11.4 days of rain, and July is the driest month with only 0.2 rainy days. There are 68.4 rainy days annually in South San Francisco, which is rainier than most places in California. The rainiest season is Spring when it rains 50% of the time and the driest is Autumn with only a 3% chance of a rainy day.



An annual snowfall of 4.6 inches in Seattle means that it is about average compared to other places in Washington.

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



December is the snowiest month in Seattle with 2.1 inches of snow, and 4 months of the year have significant snowfall.

Any measurable snowfall is a rare occurance in South San Francisco.


DID YOU KNOW?

Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.

Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.

Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.


Reviews for Seattle    2 Reviews

Over 15 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

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Over 15 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

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Reviews for South San Francisco    2 Reviews

Over 15 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply

Over 15 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of South San Francisco

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ZIPS IN SEATTLE, WASHINGTON
98115, 98103, 98133, 98105, 98118, 98125, 98122, 98117, 98144, 98109, 28 total
ZIPS IN SOUTH SAN FRANCISCO, CALIFORNIA
94080, 94128

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