2024 Compare Climate & Weather:
Portland, OR vs San Mateo, CA
Change Cities
Highlights
On average, there are 265 sunny days per year in San Mateo. Portland averages 144 sunny days per year. The US average is 205 sunny days.
San Mateo, California gets 24.4 inches of rain, on average, per year. Portland, Oregon gets 42.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.
San Mateo averages 0 inches of snow per year. Portland averages 2.6 inches of snow per year. The US average is 27.8 inches of snow per year.
Weather Highlights
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
Portland, Oregon
Summer High: the July high is around 80.5 degrees
Winter Low: the January low is 36.4
Rain: averages 42.8 inches of rain a year
Snow: averages 2.6 inches of snow a year
BESTPLACES COMFORT INDEX
San MateoThe annual BestPlaces Comfort Index for San Mateo is 8.5 (10=best), which means it is more comfortable than most places in California.
8.5 / 10
August, July and September are the most pleasant months in San Mateo, while January and December are the least comfortable months.
PortlandThe annual BestPlaces Comfort Index for Portland is 7.5 (10=best), which means it is more comfortable than most places in Oregon.
7.5 / 10
August, July and September are the most pleasant months in Portland, while December and January are the least comfortable months.
Today's Weather - Portland, OR
6 AM PST
Rain Showers Likely
50°F
DAY | DESCRIPTION | HIGH / LOW | WIND |
---|
Overnight | Rain Showers Likely | 49° / 56° | SSW 8 mph |
Friday Night | Rain Showers Likely then Chance Light Rain | 48° / 56° | SW 6 to 12 mph |
Saturday Night | Rain Showers | 49° / 60° | SSW 7 to 12 mph |
Sunday Night | Light Rain then Rain Showers | 43° / 58° | SW 10 to 15 mph |
Monday Night | Showers And Thunderstorms Likely | 42° / 60° | SW 8 to 14 mph |
Tuesday Night | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 43° / 67° | SSW 5 to 10 mph |
Wednesday Night | Chance Light Rain | 47° / 63° | SSW 7 to 10 mph |
Today's Weather - San Mateo, CA
6 AM PST
Slight Chance Drizzle then Partly Sunny
53°F
DAY | DESCRIPTION | HIGH / LOW | WIND |
---|
Today | Slight Chance Drizzle then Partly Sunny | 63° / 50° | WNW 12 to 23 mph |
Saturday | Sunny | 65° / 52° | WNW 8 to 18 mph |
Sunday | Sunny | 66° / 49° | WNW 9 to 18 mph |
Monday | Sunny | 68° / 49° | NW 12 to 17 mph |
Tuesday | Sunny | 71° / 50° | NW 8 to 16 mph |
Wednesday | Sunny | 68° / 50° | WNW 8 to 15 mph |
Thursday | Mostly Sunny | 66° / 49° | WNW 9 to 17 mph |
Average Monthly High / Low (°F)
Month | Portland, OR | San Mateo, CA |
---|
January | 48° / 36° | 58° / 42° |
February | 52° / 37° | 61° / 44° |
March | 57° / 40° | 63° / 45° |
April | 62° / 43° | 65° / 47° |
May | 68° / 48° | 68° / 50° |
June | 74° / 52° | 72° / 52° |
July | 81° / 56° | 74° / 54° |
August | 81° / 56° | 75° / 55° |
September | 76° / 52° | 74° / 53° |
October | 64° / 46° | 71° / 50° |
November | 53° / 40° | 64° / 46° |
December | 46° / 36° | 58° / 42° |
Hot, Freezing, Rainy, Snowy Days: Portland / San Mateo
Month | Hot Days | Freezing Days | Rainy Days | Snowy Days |
---|
January | 0 / 0 | 7 / 2 | 19 / 12 | 1 / 0 |
February | 0 / 0 | 6 / 1 | 15 / 11 | 0 / 0 |
March | 0 / 0 | 3 / 0 | 18 / 11 | 0 / 0 |
April | 0 / 0 | 1 / 0 | 16 / 7 | 0 / 0 |
May | 1 / 1 | 0 / 0 | 13 / 4 | 0 / 0 |
June | 1 / 2 | 0 / 0 | 9 / 2 | 0 / 0 |
July | 4 / 2 | 0 / 0 | 4 / 2 | 0 / 0 |
August | 4 / 2 | 0 / 0 | 4 / 2 | 0 / 0 |
September | 1 / 2 | 0 / 0 | 7 / 3 | 0 / 0 |
October | 0 / 1 | 1 / 0 | 13 / 5 | 0 / 0 |
November | 0 / 0 | 3 / 0 | 19 / 9 | 0 / 0 |
December | 0 / 0 | 9 / 2 | 19 / 11 | 1 / 0 |
August is the hottest month for Portland with an average high temperature of 81.1°, which ranks it as cooler than most places in Oregon. In Portland, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Portland are September, July and August.
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.
December has the coldest nighttime temperatures for Portland with an average of 35.6°. This is warmer than most places in Oregon.
January has the coldest nighttime temperatures for San Mateo with an average of 42.2°. This is warmer than most places in California.
In Portland, there are 11.6 days annually when the high temperature is over 90°, which is cooler than most places in Oregon.
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 Portland, there are 29.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Oregon.
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 Portland, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Oregon.
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.
December is the wettest month in Portland with 6.8 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Spring with 41% of yearly precipitation and 7% occurs in Autumn, which is the driest season. The annual rainfall of 42.8 inches in Portland means that it is about average compared to other places in Oregon.
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.
November is the rainiest month in Portland with 19.3 days of rain, and August is the driest month with only 3.7 rainy days. There are 155.9 rainy days annually in Portland, which is rainier than most places in Oregon. 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.
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.
An annual snowfall of 2.6 inches in Portland means that it is less snowy than most places in Oregon.
There is rarely any recorded snowfall in San Mateo, ranking it as one of the least snowy places in California.
December is the snowiest month in Portland with 0.9 inches of snow, and 3 months of the year have significant snowfall.
Any measurable snowfall is a rare occurance in San Mateo.
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 Portland 2 Reviews
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
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
Start Your Review of Portland
Reviews for San Mateo 2 Reviews
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
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
Start Your Review of San Mateo
Most Recent Searches On Compare Climate & Weather
Compare City | Compared To This City | |
Acton, Massachusetts | Phoenix, Arizona | Compare |
Live Oak, Florida | Gainesville, Florida | Compare |
Irvine, California | Lehi, Utah | Compare |
Hiawassee, Georgia | Sneedville, Tennessee | Compare |
Macon, Georgia | Dallas, Texas | Compare |
Charleston, West Virginia | Wilmington, North Carolina | Compare |
Lindenhurst, Illinois | Nashville, Tennessee | Compare |
Santa Monica, California | New York, New York | Compare |
Cincinnati, Ohio | Oxford, Ohio | Compare |
Ocean Shores, Washington | Sammamish, Washington | Compare |
Henderson, Nevada | La Quinta, California | Compare |
Bethlehem, Pennsylvania | Hilton Head Island, South Carolina | Compare |
Albrightsville, Pennsylvania | Weatherly, Pennsylvania | Compare |
Boca Raton, Florida | Malibu, California | Compare |
Avondale, Arizona | Mathis, Texas | Compare |
Yuma, Arizona | Weslaco, Texas | Compare |
Allentown, Pennsylvania | Tulsa, Oklahoma | Compare |
Wilmington, Delaware | West Chester, Pennsylvania | Compare |
Ballwin, Missouri | Colorado Springs, Colorado | Compare |
High Rolls, New Mexico | Bisbee, Arizona | Compare |