2025 Compare Climate & Weather:
Lancaster, CA vs Riverside, CA

Highlights

On average, there are 277 sunny days per year in Riverside. Lancaster averages 281 sunny days per year. The US average is 205 sunny days.

Riverside, California gets 11.3 inches of rain, on average, per year. Lancaster, California gets 7.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Riverside averages 0 inches of snow per year. Lancaster averages 0.9 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Riverside, California
Summer High: the July high is around 94.2 degrees
Winter Low: the January low is 42.4
Rain: averages 11.3 inches of rain a year
Snow: averages 0 inches of snow a year

Lancaster, California
Summer High: the July high is around 97.7 degrees
Winter Low: the January low is 32.1
Rain: averages 7.7 inches of rain a year
Snow: averages 0.9 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Riverside is 8.7 (10=best), which means it is more comfortable than most places in California.

The annual BestPlaces Comfort Index for Lancaster is 8.0 (10=best), which means it is less comfortable than most places in California.

Today's Weather - Lancaster, CA

75°F

Today's Weather - Riverside, CA

82°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Lancaster / Riverside

July is the hottest month for Lancaster with an average high temperature of 97.7°, which ranks it as warmer than most places in California. In Lancaster, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Lancaster are October, April and May.

August is the hottest month for Riverside with an average high temperature of 95.4°, which ranks it as warmer than most places in California. In Riverside, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Riverside are April, May and November.

December has the coldest nighttime temperatures for Lancaster with an average of 31.3°. This is colder than most places in California.

December has the coldest nighttime temperatures for Riverside with an average of 41.3°. This is warmer than most places in California.

In Lancaster, there are 106.9 days annually when the high temperature is over 90°, which is one of the hottest places in California.

In Riverside, there are 95.9 days annually when the high temperature is over 90°, which is hotter than most places in California.

In Lancaster, there are 53.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in California.

In Riverside, there are 4.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

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

February is the wettest month in Lancaster with 1.8 inches of rain, and the driest month is May with 0.1 inches. The wettest season is Spring with 58% of yearly precipitation and 4% occurs in Autumn, which is the driest season. The annual rainfall of 7.7 inches in Lancaster means that it is one of the driest places in California.


February is the wettest month in Riverside with 2.7 inches of rain, and the driest month is June with 0.1 inches. The wettest season is Spring with 59% of yearly precipitation and 3% occurs in Autumn, which is the driest season. The annual rainfall of 11.3 inches in Riverside means that it is drier than most places in California.

February is the rainiest month in Lancaster with 5.7 days of rain, and June is the driest month with only 0.4 rainy days. There are 31.5 rainy days annually in Lancaster, which is one of the least rainy places in California. The rainiest season is Spring when it rains 49% of the time and the driest is Autumn with only a 5% chance of a rainy day.

February is the rainiest month in Riverside with 6.2 days of rain, and August is the driest month with only 0.4 rainy days. There are 34.0 rainy days annually in Riverside, which is less rainy than most places in California. The rainiest season is Spring when it rains 48% of the time and the driest is Autumn with only a 5% chance of a rainy day.

An annual snowfall of 0.9 inches in Lancaster means that it is snowier than most places in California.

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

December is the snowiest month in Lancaster with 0.5 inches of snow, and 1 month of the year have significant snowfall.

Any measurable snowfall is a rare occurance in Riverside.