2025 Compare Climate & Weather:
Pasadena, CA vs Monrovia, CA

Highlights

On average, there are 285 sunny days per year in Monrovia. Pasadena averages 286 sunny days per year. The US average is 205 sunny days.

Monrovia, California gets 20.2 inches of rain, on average, per year. Pasadena, California gets 21.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Monrovia averages 0 inches of snow per year. Pasadena averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Monrovia, California
Summer High: the July high is around 87.7 degrees
Winter Low: the January low is 46.6
Rain: averages 20.2 inches of rain a year
Snow: averages 0 inches of snow a year

Pasadena, California
Summer High: the July high is around 87.5 degrees
Winter Low: the January low is 45.1
Rain: averages 21.4 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Monrovia is 9.1 (10=best), which means it is one of the most pleasant places in California.

The annual BestPlaces Comfort Index for Pasadena is 9.1 (10=best), which means it is one of the most pleasant places in California.

Today's Weather - Pasadena, CA

53°F

Today's Weather - Monrovia, CA

54°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Pasadena / Monrovia

August is the hottest month for Pasadena with an average high temperature of 89.1°, which ranks it as about average compared to other places in California. In Pasadena, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Pasadena are May, October and June.

August is the hottest month for Monrovia with an average high temperature of 89.2°, which ranks it as about average compared to other places in California. In Monrovia, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Monrovia are May, April and October.

December has the coldest nighttime temperatures for Pasadena with an average of 44.3°. This is warmer than most places in California.

December has the coldest nighttime temperatures for Monrovia with an average of 45.8°. This is one of the warmest places in California.

In Pasadena, there are 49.6 days annually when the high temperature is over 90°, which is about average compared to other places in California.

In Monrovia, there are 49.7 days annually when the high temperature is over 90°, which is about average compared to other places in California.

In Pasadena, there are 1.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Monrovia, there are 0.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

In Pasadena, 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 Monrovia, 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 Pasadena with 5.2 inches of rain, and the driest month is July with 0.1 inches. The wettest season is Spring with 59% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 21.4 inches in Pasadena means that it is wetter than most places in California.


February is the wettest month in Monrovia with 4.9 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 59% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 20.2 inches in Monrovia means that it is about average compared to other places in California.

February is the rainiest month in Pasadena with 6.8 days of rain, and July is the driest month with only 0.5 rainy days. There are 39.7 rainy days annually in Pasadena, which is less rainy than most places in California. The rainiest season is Spring when it rains 46% of the time and the driest is Autumn with only a 6% chance of a rainy day.

February is the rainiest month in Monrovia with 6.7 days of rain, and August is the driest month with only 0.4 rainy days. There are 38.0 rainy days annually in Monrovia, which is less rainy than most places in California. The rainiest season is Spring when it rains 47% of the time and the driest is Autumn with only a 5% chance of a rainy day.

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

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

Any measurable snowfall is a rare occurance in Pasadena.

Any measurable snowfall is a rare occurance in Monrovia.