2025 Compare Climate & Weather:
Simi Valley, CA vs Dublin, CA

Highlights

On average, there are 262 sunny days per year in Dublin. Simi Valley averages 277 sunny days per year. The US average is 205 sunny days.

Dublin, California gets 18.9 inches of rain, on average, per year. Simi Valley, California gets 17.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

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

Weather Highlights

Dublin, California
Summer High: the July high is around 83.9 degrees
Winter Low: the January low is 39.4
Rain: averages 18.9 inches of rain a year
Snow: averages 0 inches of snow a year

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

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Dublin is 8.5 (10=best), which means it is more comfortable than most places in California.

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

Today's Weather - Simi Valley, CA

71°F

Today's Weather - Dublin, CA

66°F

Average Monthly High / Low (°F)

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

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.

August is the hottest month for Dublin with an average high temperature of 84.3°, which ranks it as cooler than most places in California. In Dublin, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Dublin are June, October and May.

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

January has the coldest nighttime temperatures for Dublin with an average of 39.4°. This is warmer than most places in California.

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 Dublin, there are 34.9 days annually when the high temperature is over 90°, which is cooler than most places in California.

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 Dublin, there are 11.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

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.

In Dublin, 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 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.


February is the wettest month in Dublin with 3.5 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 55% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 18.9 inches in Dublin means that it is about average compared to other places in California.

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.

December is the rainiest month in Dublin with 11.0 days of rain, and July is the driest month with only 0.2 rainy days. There are 64.2 rainy days annually in Dublin, which is rainier than most places in California. The rainiest season is Spring when it rains 50% of the time and the driest is Autumn with only a 2% chance of a rainy day.

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

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

Any measurable snowfall is a rare occurance in Simi Valley.

Any measurable snowfall is a rare occurance in Dublin.