2025 Compare Climate & Weather:
Arlington, TX vs Simi Valley, CA

Highlights

On average, there are 277 sunny days per year in Simi Valley. Arlington averages 235 sunny days per year. The US average is 205 sunny days.

Simi Valley, California gets 17.2 inches of rain, on average, per year. Arlington, Texas gets 39.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Simi Valley averages 0 inches of snow per year. Arlington averages 1.2 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Simi Valley, California
Summer High: the July high is around 92.2 degrees
Winter Low: the January low is 41.5
Rain: averages 17.2 inches of rain a year
Snow: averages 0 inches of snow a year

Arlington, Texas
Summer High: the July high is around 94.9 degrees
Winter Low: the January low is 34
Rain: averages 39.5 inches of rain a year
Snow: averages 1.2 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Simi Valley is 8.6 (10=best), which means it is more comfortable than most places in California.

The annual BestPlaces Comfort Index for Arlington is 7.2 (10=best), which means it is more comfortable than most places in Texas.

Today's Weather - Arlington, TX

59°F

Today's Weather - Simi Valley, CA

52°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Arlington / Simi Valley

August is the hottest month for Arlington with an average high temperature of 95.6°, which ranks it as about average compared to other places in Texas. In Arlington, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Arlington are October, April and May.

August is the hottest month for Simi Valley with an average high temperature of 93.5°, which ranks it as warmer than most places in California. In Simi Valley, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Simi Valley are April, May and November.

January has the coldest nighttime temperatures for Arlington with an average of 34.0°. This is colder than most places in Texas.

December has the coldest nighttime temperatures for Simi Valley with an average of 40.5°. This is warmer than most places in California.

In Arlington, there are 89.1 days annually when the high temperature is over 90°, which is cooler than most places in Texas.

In Simi Valley, there are 82.8 days annually when the high temperature is over 90°, which is hotter than most places in California.

In Arlington, there are 39.3 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Texas.

In Simi Valley, there are 9.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

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

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

May is the wettest month in Arlington with 4.8 inches of rain, and the driest month is August with 2.1 inches. The wettest season is Summer with 29% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 39.5 inches in Arlington means that it is wetter than most places in Texas.


February is the wettest month in Simi Valley with 4.3 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 62% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 17.2 inches in Simi Valley means that it is about average compared to other places in California.

May is the rainiest month in Arlington with 8.7 days of rain, and August is the driest month with only 4.7 rainy days. There are 77.1 rainy days annually in Arlington, which is rainier than most places in Texas. The rainiest season is Summer when it rains 29% of the time and the driest is Autumn with only a 22% chance of a rainy day.

February is the rainiest month in Simi Valley with 6.6 days of rain, and July is the driest month with only 0.2 rainy days. There are 35.0 rainy days annually in Simi Valley, which is less rainy than most places in California. The rainiest season is Spring when it rains 51% of the time and the driest is Autumn with only a 3% chance of a rainy day.

An annual snowfall of 1.2 inches in Arlington means that it is snowier than most places in Texas.

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

February is the snowiest month in Arlington with 0.6 inches of snow, and 1 month of the year have significant snowfall.

Any measurable snowfall is a rare occurance in Simi Valley.