2025 Compare Climate & Weather:
Rio Vista, CA vs Sheridan, WY

Highlights

On average, there are 208 sunny days per year in Sheridan. Rio Vista averages 268 sunny days per year. The US average is 205 sunny days.

Sheridan, Wyoming gets 12.9 inches of rain, on average, per year. Rio Vista, California gets 20.3 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Sheridan averages 34.7 inches of snow per year. Rio Vista averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Sheridan, Wyoming
Summer High: the July high is around 87.1 degrees
Winter Low: the January low is 10.7
Rain: averages 12.9 inches of rain a year
Snow: averages 34.7 inches of snow a year

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

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Sheridan is 6.8 (10=best), which means it is more comfortable than most places in Wyoming.

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

Today's Weather - Rio Vista, CA

81°F

Today's Weather - Sheridan, WY

36°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Rio Vista / Sheridan

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.

July is the hottest month for Sheridan with an average high temperature of 87.1°, which ranks it as warmer than most places in Wyoming. In Sheridan, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sheridan are June, September and August.

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.

December has the coldest nighttime temperatures for Sheridan with an average of 9.7°. This is about average compared to other places in Wyoming.

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 Sheridan, there are 28.7 days annually when the high temperature is over 90°, which is hotter than most places in Wyoming.

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 Sheridan, there are 189.4 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Wyoming.

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.

In Sheridan, there are 20.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Wyoming.

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.


June is the wettest month in Sheridan with 2.2 inches of rain, and the driest month is January with 0.4 inches. The wettest season is Summer with 34% of yearly precipitation and 11% occurs in Spring, which is the driest season. The annual rainfall of 12.9 inches in Sheridan means that it is about average compared to other places in Wyoming.

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.

May is the rainiest month in Sheridan with 9.8 days of rain, and August is the driest month with only 4.8 rainy days. There are 79.7 rainy days annually in Sheridan, which is rainier than most places in Wyoming. The rainiest season is Summer when it rains 33% of the time and the driest is Spring with only a 19% chance of a rainy day.

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

An annual snowfall of 34.7 inches in Sheridan means that it is less snowy than most places in Wyoming.

Any measurable snowfall is a rare occurance in Rio Vista.

December is the snowiest month in Sheridan with 6.5 inches of snow, and 9 months of the year have significant snowfall.