2025 Compare Climate & Weather:
Custer, SD vs Dallas, OR

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Highlights

On average, there are 156 sunny days per year in Dallas. Custer averages 226 sunny days per year. The US average is 205 sunny days.

Dallas, Oregon gets 53.8 inches of rain, on average, per year. Custer, South Dakota gets 19.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Dallas averages 6 inches of snow per year. Custer averages 55.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Dallas, Oregon
Summer High: the July high is around 81.9 degrees
Winter Low: the January low is 34.5
Rain: averages 53.8 inches of rain a year
Snow: averages 6 inches of snow a year

Custer, South Dakota
Summer High: the July high is around 79.5 degrees
Winter Low: the January low is 15.5
Rain: averages 19.9 inches of rain a year
Snow: averages 55.3 inches of snow a year

BestPlaces Comfort Index

Dallas

The annual BestPlaces Comfort Index for Dallas is 7.3 (10=best), which means it is more comfortable than most places in Oregon.

7.3 / 10

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

Custer

The annual BestPlaces Comfort Index for Custer is 6.7 (10=best), which means it is less comfortable than most places in South Dakota.

6.7 / 10

August, July and June are the most pleasant months in Custer, while February and December are the least comfortable months.

Average Monthly High / Low (°F)

Month	Custer, SD	Dallas, OR
January	36° / 16°	47° / 35°
February	37° / 17°	51° / 35°
March	43° / 23°	56° / 37°
April	51° / 29°	61° / 39°
May	61° / 39°	68° / 44°
June	71° / 48°	74° / 49°
July	80° / 55°	82° / 52°
August	78° / 53°	83° / 52°
September	69° / 44°	77° / 48°
October	55° / 33°	65° / 43°
November	43° / 23°	52° / 38°
December	35° / 15°	46° / 34°

Hot, Freezing, Rainy, Snowy Days: Custer / Dallas

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	29 / 12	4 / 18	4 / 1
February	0 / 0	26 / 9	5 / 16	5 / 1
March	0 / 0	26 / 6	6 / 18	5 / 0
April	0 / 0	19 / 2	9 / 14	4 / 0
May	0 / 0	7 / 0	13 / 11	1 / 0
June	1 / 1	0 / 0	12 / 8	0 / 0
July	3 / 5	0 / 0	11 / 3	0 / 0
August	1 / 6	0 / 0	9 / 3	0 / 0
September	0 / 2	3 / 0	8 / 6	0 / 0
October	0 / 0	14 / 1	7 / 11	2 / 0
November	0 / 0	24 / 6	4 / 19	3 / 0
December	0 / 0	29 / 13	4 / 18	4 / 1

July is the hottest month for Custer with an average high temperature of 79.5°, which ranks it as one of the coolest places in South Dakota. In Custer, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Custer are August, July and June.

August is the hottest month for Dallas with an average high temperature of 82.6°, which ranks it as about average compared to other places in Oregon. In Dallas, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Dallas are September, July and June.

December has the coldest nighttime temperatures for Custer with an average of 15.2°. This is one of the warmest places in South Dakota.

December has the coldest nighttime temperatures for Dallas with an average of 33.7°. This is about average compared to other places in Oregon.

In Custer, there are 4.7 days annually when the high temperature is over 90°, which is one of the coolest places in South Dakota.

In Dallas, there are 15.1 days annually when the high temperature is over 90°, which is about average compared to other places in Oregon.

In Custer, there are 177.0 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in South Dakota.

In Dallas, there are 49.2 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Oregon.

In Custer, there are 12.6 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in South Dakota.

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

May is the wettest month in Custer with 3.6 inches of rain, and the driest month is January with 0.3 inches. The wettest season is Autumn with 40% of yearly precipitation and 7% occurs in Spring, which is the driest season. The annual rainfall of 19.9 inches in Custer means that it is drier than most places in South Dakota.

December is the wettest month in Dallas with 10.2 inches of rain, and the driest month is July with 0.4 inches. The wettest season is Spring with 48% of yearly precipitation and 4% occurs in Autumn, which is the driest season. The annual rainfall of 53.8 inches in Dallas means that it is wetter than most places in Oregon.

May is the rainiest month in Custer with 12.8 days of rain, and January is the driest month with only 3.9 rainy days. There are 93.0 rainy days annually in Custer, which is one of the rainiest places in South Dakota. The rainiest season is Autumn when it rains 36% of the time and the driest is Spring with only a 14% chance of a rainy day.

November is the rainiest month in Dallas with 18.9 days of rain, and August is the driest month with only 2.8 rainy days. There are 143.9 rainy days annually in Dallas, which is about average compared to other places in Oregon. The rainiest season is Spring when it rains 36% of the time and the driest is Autumn with only a 9% chance of a rainy day.

An annual snowfall of 55.3 inches in Custer means that it is one of the snowiest places in South Dakota.

An annual snowfall of 6.0 inches in Dallas means that it is snowier than most places in Oregon.

April is the snowiest month in Custer with 11.5 inches of snow, and 9 months of the year have significant snowfall.

February is the snowiest month in Dallas with 2.7 inches of snow, and 3 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 Custer 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 Dallas 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 Dallas

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2025 Compare Climate & Weather:
Custer, SD vs Dallas, OR

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Custer / Dallas

December has the coldest nighttime temperatures for Custer with an average of 15.2°. This is one of the warmest places in South Dakota.

December has the coldest nighttime temperatures for Dallas with an average of 33.7°. This is about average compared to other places in Oregon.

In Custer, there are 4.7 days annually when the high temperature is over 90°, which is one of the coolest places in South Dakota.

In Dallas, there are 15.1 days annually when the high temperature is over 90°, which is about average compared to other places in Oregon.

In Custer, there are 12.6 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in South Dakota.

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

An annual snowfall of 55.3 inches in Custer means that it is one of the snowiest places in South Dakota.

An annual snowfall of 6.0 inches in Dallas means that it is snowier than most places in Oregon.

April is the snowiest month in Custer with 11.5 inches of snow, and 9 months of the year have significant snowfall.

February is the snowiest month in Dallas with 2.7 inches of snow, and 3 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Custer 2 Reviews

Reviews for Dallas 2 Reviews

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2025 Compare Climate & Weather:Custer, SD vs Dallas, OR

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Custer / Dallas

December has the coldest nighttime temperatures for Custer with an average of 15.2°. This is one of the warmest places in South Dakota.December has the coldest nighttime temperatures for Dallas with an average of 33.7°. This is about average compared to other places in Oregon.

In Custer, there are 4.7 days annually when the high temperature is over 90°, which is one of the coolest places in South Dakota.In Dallas, there are 15.1 days annually when the high temperature is over 90°, which is about average compared to other places in Oregon.

In Custer, there are 12.6 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in South Dakota.In Dallas, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Oregon.

An annual snowfall of 55.3 inches in Custer means that it is one of the snowiest places in South Dakota.An annual snowfall of 6.0 inches in Dallas means that it is snowier than most places in Oregon.

April is the snowiest month in Custer with 11.5 inches of snow, and 9 months of the year have significant snowfall.February is the snowiest month in Dallas with 2.7 inches of snow, and 3 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Custer 2 Reviews

Reviews for Dallas 2 Reviews

Most Recent Searches On Compare Climate & Weather

Compare Cost of Living

Zips In Custer, South Dakota

Zips In DALLAS, OREGON

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Learn More About Dallas, Oregon

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BestPlaces Tools

About BestPlaces

Follow Us

2025 Compare Climate & Weather:
Custer, SD vs Dallas, OR

December has the coldest nighttime temperatures for Custer with an average of 15.2°. This is one of the warmest places in South Dakota.

December has the coldest nighttime temperatures for Dallas with an average of 33.7°. This is about average compared to other places in Oregon.

In Custer, there are 4.7 days annually when the high temperature is over 90°, which is one of the coolest places in South Dakota.

In Dallas, there are 15.1 days annually when the high temperature is over 90°, which is about average compared to other places in Oregon.

An annual snowfall of 55.3 inches in Custer means that it is one of the snowiest places in South Dakota.

An annual snowfall of 6.0 inches in Dallas means that it is snowier than most places in Oregon.

April is the snowiest month in Custer with 11.5 inches of snow, and 9 months of the year have significant snowfall.

February is the snowiest month in Dallas with 2.7 inches of snow, and 3 months of the year have significant snowfall.