2025 Compare Climate & Weather:
San Dimas, CA vs West Linn, OR

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Highlights

On average, there are 144 sunny days per year in West Linn. San Dimas averages 277 sunny days per year. The US average is 205 sunny days.

West Linn, Oregon gets 45 inches of rain, on average, per year. San Dimas, California gets 19.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

West Linn averages 1 inches of snow per year. San Dimas averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

West Linn, Oregon
Summer High: the July high is around 81.6 degrees
Winter Low: the January low is 35.5
Rain: averages 45 inches of rain a year
Snow: averages 1 inches of snow a year

San Dimas, California
Summer High: the July high is around 90.7 degrees
Winter Low: the January low is 44.7
Rain: averages 19.4 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

West Linn

The annual BestPlaces Comfort Index for West Linn is 7.5 (10=best), which means it is more comfortable than most places in Oregon.

7.5 / 10

July, August and September are the most pleasant months in West Linn, while December and January are the least comfortable months.

San Dimas

The annual BestPlaces Comfort Index for San Dimas is 8.9 (10=best), which means it is more comfortable than most places in California.

8.9 / 10

May, June and October are the most pleasant months in San Dimas, while August and January are the least comfortable months.

Average Monthly High / Low (°F)

Month	San Dimas, CA	West Linn, OR
January	67° / 45°	48° / 36°
February	68° / 46°	53° / 36°
March	71° / 48°	58° / 39°
April	75° / 51°	63° / 42°
May	79° / 55°	69° / 47°
June	84° / 59°	75° / 51°
July	91° / 63°	82° / 55°
August	92° / 64°	83° / 55°
September	89° / 62°	77° / 51°
October	81° / 56°	64° / 45°
November	74° / 48°	53° / 39°
December	67° / 44°	47° / 35°

Hot, Freezing, Rainy, Snowy Days: San Dimas / West Linn

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	0 / 10	6 / 18	0 / 0
February	0 / 0	0 / 7	6 / 15	0 / 0
March	1 / 0	0 / 3	5 / 17	0 / 0
April	2 / 0	0 / 1	3 / 15	0 / 0
May	3 / 1	0 / 0	1 / 12	0 / 0
June	7 / 2	0 / 0	1 / 8	0 / 0
July	17 / 5	0 / 0	0 / 4	0 / 0
August	20 / 6	0 / 0	0 / 3	0 / 0
September	14 / 2	0 / 0	1 / 6	0 / 0
October	6 / 0	0 / 0	2 / 12	0 / 0
November	1 / 0	0 / 3	3 / 19	0 / 0
December	0 / 0	1 / 10	4 / 18	0 / 0

August is the hottest month for San Dimas with an average high temperature of 92.2°, which ranks it as about average compared to other places in California. In San Dimas, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Dimas are May, April and October.

August is the hottest month for West Linn with an average high temperature of 82.5°, which ranks it as about average compared to other places in Oregon. In West Linn, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for West Linn are September, June and July.

December has the coldest nighttime temperatures for San Dimas with an average of 43.8°. This is warmer than most places in California.

December has the coldest nighttime temperatures for West Linn with an average of 34.6°. This is warmer than most places in Oregon.

In San Dimas, there are 70.0 days annually when the high temperature is over 90°, which is hotter than most places in California.

In West Linn, there are 15.5 days annually when the high temperature is over 90°, which is about average compared to other places in Oregon.

In San Dimas, there are 1.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In West Linn, there are 34.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Oregon.

In San Dimas, 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 West Linn, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Oregon.

February is the wettest month in San Dimas with 4.9 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 60% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 19.4 inches in San Dimas means that it is about average compared to other places in California.

December is the wettest month in West Linn with 7.1 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Spring with 40% of yearly precipitation and 7% occurs in Autumn, which is the driest season. The annual rainfall of 45.0 inches in West Linn means that it is wetter than most places in Oregon.

February is the rainiest month in San Dimas with 5.9 days of rain, and July is the driest month with only 0.2 rainy days. There are 32.4 rainy days annually in San Dimas, which is less rainy 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.

November is the rainiest month in West Linn with 18.7 days of rain, and August is the driest month with only 3.4 rainy days. There are 146.3 rainy days annually in West Linn, 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.

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

An annual snowfall of 1.0 inches in West Linn means that it is less snowy than most places in Oregon.

Any measurable snowfall is a rare occurance in San Dimas.

January is the snowiest month in West Linn with 0.4 inches of snow, and no months of the year have significant snowfall.

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 San Dimas 2 Reviews

Jill · Sherman Oaks, CA

re:

Over 16 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

NC For Me · Apex, NC

re:

Over 16 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

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Reviews for West Linn 2 Reviews

Jill · Sherman Oaks, CA

re:

Over 16 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

NC For Me · Apex, NC

re:

Over 16 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 West Linn

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2025 Compare Climate & Weather:
San Dimas, CA vs West Linn, OR

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: San Dimas / West Linn

December has the coldest nighttime temperatures for San Dimas with an average of 43.8°. This is warmer than most places in California.

December has the coldest nighttime temperatures for West Linn with an average of 34.6°. This is warmer than most places in Oregon.

In San Dimas, there are 70.0 days annually when the high temperature is over 90°, which is hotter than most places in California.

In West Linn, there are 15.5 days annually when the high temperature is over 90°, which is about average compared to other places in Oregon.

In San Dimas, there are 1.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In West Linn, there are 34.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Oregon.

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

An annual snowfall of 1.0 inches in West Linn means that it is less snowy than most places in Oregon.

Any measurable snowfall is a rare occurance in San Dimas.

January is the snowiest month in West Linn with 0.4 inches of snow, and no months of the year have significant snowfall.

DID YOU KNOW?

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Reviews for West Linn 2 Reviews

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2025 Compare Climate & Weather:San Dimas, CA vs West Linn, OR

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: San Dimas / West Linn

December has the coldest nighttime temperatures for San Dimas with an average of 43.8°. This is warmer than most places in California.December has the coldest nighttime temperatures for West Linn with an average of 34.6°. This is warmer than most places in Oregon.

In San Dimas, there are 70.0 days annually when the high temperature is over 90°, which is hotter than most places in California.In West Linn, there are 15.5 days annually when the high temperature is over 90°, which is about average compared to other places in Oregon.

In San Dimas, there are 1.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.In West Linn, there are 34.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Oregon.

There is rarely any recorded snowfall in San Dimas, ranking it as one of the least snowy places in California.An annual snowfall of 1.0 inches in West Linn means that it is less snowy than most places in Oregon.

Any measurable snowfall is a rare occurance in San Dimas.January is the snowiest month in West Linn with 0.4 inches of snow, and no months of the year have significant snowfall.

DID YOU KNOW?

Reviews for San Dimas 2 Reviews

Reviews for West Linn 2 Reviews

Most Recent Searches On Compare Climate & Weather

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Zips In San Dimas, California

Zips In WEST LINN, OREGON

Learn More About SAN DIMAS, CALIFORNIA

Learn More About West Linn, Oregon

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BestPlaces Tools

About BestPlaces

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2025 Compare Climate & Weather:
San Dimas, CA vs West Linn, OR

December has the coldest nighttime temperatures for San Dimas with an average of 43.8°. This is warmer than most places in California.

December has the coldest nighttime temperatures for West Linn with an average of 34.6°. This is warmer than most places in Oregon.

In San Dimas, there are 70.0 days annually when the high temperature is over 90°, which is hotter than most places in California.

In West Linn, there are 15.5 days annually when the high temperature is over 90°, which is about average compared to other places in Oregon.

In San Dimas, there are 1.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In West Linn, there are 34.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Oregon.

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

An annual snowfall of 1.0 inches in West Linn means that it is less snowy than most places in Oregon.

Any measurable snowfall is a rare occurance in San Dimas.

January is the snowiest month in West Linn with 0.4 inches of snow, and no months of the year have significant snowfall.