The remote server returned an error: (400) Bad Request.The remote server returned an error: (400) Bad Request. 2025 Compare Climate & Weather: Dallas, OR vs Rio Vista, CA

2025 Compare Climate & Weather:
Dallas, OR vs Rio Vista, CA

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Highlights

On average, there are 268 sunny days per year in Rio Vista. Dallas averages 156 sunny days per year. The US average is 205 sunny days.

Rio Vista, California gets 20.3 inches of rain, on average, per year. Dallas, Oregon gets 53.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Rio Vista averages 0 inches of snow per year. Dallas averages 6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Rio Vista, California
Summer High: the July high is around 91.2 degrees
Winter Low: the January low is 38.6
Rain: averages 20.3 inches of rain a year
Snow: averages 0 inches of snow a year

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

BestPlaces Comfort Index
Rio Vista

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

8.4 / 10
May, October and June are the most pleasant months in Rio Vista, while January and December are the least comfortable months.

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.

Average Monthly High / Low (°F)
MonthDallas, ORRio Vista, CA
January47° / 35°55° / 39°
February51° / 35°61° / 42°
March56° / 37°66° / 45°
April61° / 39°71° / 47°
May68° / 44°79° / 52°
June74° / 49°86° / 57°
July82° / 52°91° / 59°
August83° / 52°91° / 58°
September77° / 48°87° / 56°
October65° / 43°77° / 51°
November52° / 38°64° / 44°
December46° / 34°55° / 39°
Hot, Freezing, Rainy, Snowy Days: Dallas / Rio Vista
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 012 / 518 / 111 / 0
February0 / 09 / 116 / 101 / 0
March0 / 06 / 018 / 90 / 0
April0 / 02 / 014 / 50 / 0
May0 / 40 / 011 / 30 / 0
June1 / 100 / 08 / 10 / 0
July5 / 180 / 03 / 00 / 0
August6 / 160 / 03 / 00 / 0
September2 / 110 / 06 / 10 / 0
October0 / 21 / 011 / 30 / 0
November0 / 06 / 119 / 70 / 0
December0 / 013 / 518 / 101 / 0
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.

July is the hottest month for Rio Vista with an average high temperature of 91.2°, which ranks it as about average compared to other places in California. In Rio Vista, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Rio Vista are October, May and April.
December has the coldest nighttime temperatures for Dallas with an average of 33.7°. This is about average compared to other places in Oregon.

December has the coldest nighttime temperatures for Rio Vista with an average of 38.5°. This is about average compared to other places in California.

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 Rio Vista, there are 61.2 days annually when the high temperature is over 90°, which is about average compared to other places in California.

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 Rio Vista, there are 11.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

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.

In Rio Vista, 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 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.


December is the wettest month in Rio Vista with 4.0 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 59% of yearly precipitation and 0% occurs in Autumn, which is the driest season. The annual rainfall of 20.3 inches in Rio Vista means that it is about average compared to other places in California.

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.

January is the rainiest month in Rio Vista with 10.8 days of rain, and July is the driest month with only 0.0 rainy days. There are 57.9 rainy days annually in Rio Vista, which is about average compared to other places in California. The rainiest season is Spring when it rains 51% of the time and the driest is Autumn with only a 2% chance of a rainy day.

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

There is rarely any recorded snowfall in Rio Vista, ranking it as one of the least snowy places in California.
February is the snowiest month in Dallas with 2.7 inches of snow, and 3 months of the year have significant snowfall.

Any measurable snowfall is a rare occurance in Rio Vista.

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 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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Reviews for Rio Vista    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 Rio Vista

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