2024 Compare Climate & Weather:
Lake Oswego, OR vs San Ramon, CA
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Highlights
On average, there are 256 sunny days per year in San Ramon. Lake Oswego averages 141 sunny days per year. The US average is 205 sunny days.
San Ramon, California gets 19 inches of rain, on average, per year. Lake Oswego, Oregon gets 42 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.
San Ramon averages 0 inches of snow per year. Lake Oswego averages 1.5 inches of snow per year. The US average is 27.8 inches of snow per year.
Weather Highlights
San Ramon, California
Summer High: the July high is around 84.4 degrees
Winter Low: the January low is 39.2
Rain: averages 19 inches of rain a year
Snow: averages 0 inches of snow a year
Lake Oswego, Oregon
Summer High: the July high is around 81.4 degrees
Winter Low: the January low is 36.6
Rain: averages 42 inches of rain a year
Snow: averages 1.5 inches of snow a year
BESTPLACES COMFORT INDEX
San RamonThe annual BestPlaces Comfort Index for San Ramon is 8.5 (10=best), which means it is more comfortable than most places in California.
8.5 / 10
June, September and October are the most pleasant months in San Ramon, while January and December are the least comfortable months.
Lake OswegoThe annual BestPlaces Comfort Index for Lake Oswego is 7.6 (10=best), which means it is one of the most pleasant places in Oregon.
7.6 / 10
August, July and September are the most pleasant months in Lake Oswego, while December and January are the least comfortable months.
Today's Weather - San Ramon, CA
4 AM PST
Clear
54°F
| DAY | DESCRIPTION | HIGH / LOW | WIND |
|---|
| Overnight | Clear | 51° / 84° | W 3 mph |
| Thursday Night | Mostly Clear | 52° / 83° | NW 0 to 10 mph |
| Friday Night | Mostly Clear | 51° / 74° | SW 6 to 9 mph |
| Saturday Night | Partly Cloudy then Patchy Fog | 51° / 75° | SW 6 to 13 mph |
| Sunday Night | Partly Cloudy then Patchy Fog | 54° / 75° | SW 5 to 10 mph |
| Monday Night | Mostly Cloudy then Patchy Fog | 53° / 82° | WSW 5 to 12 mph |
| Tuesday Night | Mostly Clear | 57° / 90° | WSW 2 to 9 mph |
Average Monthly High / Low (°F)
| Month | Lake Oswego, OR | San Ramon, CA |
|---|
| January | 49° / 37° | 57° / 39° |
| February | 53° / 37° | 61° / 42° |
| March | 58° / 40° | 65° / 44° |
| April | 63° / 43° | 69° / 46° |
| May | 69° / 47° | 74° / 50° |
| June | 75° / 52° | 80° / 54° |
| July | 81° / 56° | 84° / 56° |
| August | 82° / 56° | 84° / 56° |
| September | 77° / 52° | 82° / 55° |
| October | 64° / 46° | 76° / 50° |
| November | 53° / 40° | 65° / 44° |
| December | 47° / 36° | 57° / 40° |
Hot, Freezing, Rainy, Snowy Days: Lake Oswego / San Ramon
| Month | Hot Days | Freezing Days | Rainy Days | Snowy Days |
|---|
| January | 0 / 0 | 7 / 4 | 18 / 11 | 0 / 0 |
| February | 0 / 0 | 6 / 1 | 15 / 11 | 0 / 0 |
| March | 0 / 0 | 3 / 0 | 17 / 9 | 0 / 0 |
| April | 0 / 0 | 1 / 0 | 15 / 6 | 0 / 0 |
| May | 1 / 2 | 0 / 0 | 12 / 3 | 0 / 0 |
| June | 2 / 5 | 0 / 0 | 8 / 1 | 0 / 0 |
| July | 5 / 9 | 0 / 0 | 4 / 0 | 0 / 0 |
| August | 5 / 9 | 0 / 0 | 3 / 0 | 0 / 0 |
| September | 2 / 7 | 0 / 0 | 6 / 1 | 0 / 0 |
| October | 0 / 2 | 0 / 0 | 12 / 3 | 0 / 0 |
| November | 0 / 0 | 3 / 1 | 19 / 7 | 0 / 0 |
| December | 0 / 0 | 9 / 4 | 18 / 11 | 0 / 0 |
August is the hottest month for Lake Oswego with an average high temperature of 82.0°, which ranks it as about average compared to other places in Oregon. In Lake Oswego, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Lake Oswego are September, June and July.
July is the hottest month for San Ramon with an average high temperature of 84.4°, which ranks it as cooler than most places in California. In San Ramon, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Ramon are June, October and May.
December has the coldest nighttime temperatures for Lake Oswego with an average of 35.6°. This is warmer than most places in Oregon.
January has the coldest nighttime temperatures for San Ramon with an average of 39.2°. This is warmer than most places in California.
In Lake Oswego, there are 14.3 days annually when the high temperature is over 90°, which is about average compared to other places in Oregon.
In San Ramon, there are 35.4 days annually when the high temperature is over 90°, which is cooler than most places in California.
In Lake Oswego, there are 28.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Oregon.
In San Ramon, there are 11.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.
In Lake Oswego, 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 Ramon, 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 Lake Oswego with 6.8 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Spring with 42% of yearly precipitation and 7% occurs in Autumn, which is the driest season. The annual rainfall of 42.0 inches in Lake Oswego means that it is about average compared to other places in Oregon.
February is the wettest month in San Ramon with 3.5 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 55% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 19.0 inches in San Ramon means that it is about average compared to other places in California.
November is the rainiest month in Lake Oswego with 18.7 days of rain, and August is the driest month with only 3.4 rainy days. There are 147.3 rainy days annually in Lake Oswego, which is about average compared to other places in Oregon. The rainiest season is Spring when it rains 35% of the time and the driest is Autumn with only a 11% chance of a rainy day.
December is the rainiest month in San Ramon with 10.9 days of rain, and July is the driest month with only 0.2 rainy days. There are 64.2 rainy days annually in San Ramon, 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 2% chance of a rainy day.
An annual snowfall of 1.5 inches in Lake Oswego means that it is less snowy than most places in Oregon.
There is rarely any recorded snowfall in San Ramon, ranking it as one of the least snowy places in California.
December is the snowiest month in Lake Oswego with 0.5 inches of snow, and 2 months of the year have significant snowfall.
Any measurable snowfall is a rare occurance in San Ramon.
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 Lake Oswego 
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 Lake Oswego
Reviews for San Ramon 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 Ramon
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