2025 Compare Climate & Weather:
Arroyo Grande, CA vs Groveland, CA

Highlights

On average, there are 259 sunny days per year in Groveland. Arroyo Grande averages 286 sunny days per year. The US average is 205 sunny days.

Groveland, California gets 38.5 inches of rain, on average, per year. Arroyo Grande, California gets 19.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Groveland averages 6.1 inches of snow per year. Arroyo Grande averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Groveland, California
Summer High: the July high is around 91 degrees
Winter Low: the January low is 31.1
Rain: averages 38.5 inches of rain a year
Snow: averages 6.1 inches of snow a year

Arroyo Grande, California
Summer High: the July high is around 72.7 degrees
Winter Low: the January low is 42.9
Rain: averages 19.5 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Groveland is 7.9 (10=best), which means it is less comfortable than most places in California.

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

Today's Weather - Arroyo Grande, CA

61°F

Today's Weather - Groveland, CA

70°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Arroyo Grande / Groveland

September is the hottest month for Arroyo Grande with an average high temperature of 74.2°, which ranks it as one of the coolest places in California. In Arroyo Grande, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Arroyo Grande are September, August and July.

July is the hottest month for Groveland with an average high temperature of 91.0°, which ranks it as about average compared to other places in California. In Groveland, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Groveland are October, May and June.

December has the coldest nighttime temperatures for Arroyo Grande with an average of 42.2°. This is warmer than most places in California.

December has the coldest nighttime temperatures for Groveland with an average of 30.9°. This is colder than most places in California.

In Arroyo Grande, there are 5.7 days annually when the high temperature is over 90°, which is cooler than most places in California.

In Groveland, there are 49.0 days annually when the high temperature is over 90°, which is about average compared to other places in California.

In Arroyo Grande, there are 3.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Groveland, there are 75.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in California.

In Arroyo Grande, 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 Groveland, 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 Arroyo Grande with 4.1 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 58% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 19.5 inches in Arroyo Grande means that it is about average compared to other places in California.


January is the wettest month in Groveland with 7.5 inches of rain, and the driest month is July with 0.1 inches. The wettest season is Spring with 52% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 38.5 inches in Groveland means that it is wetter than most places in California.

February is the rainiest month in Arroyo Grande with 8.9 days of rain, and July is the driest month with only 0.4 rainy days. There are 49.8 rainy days annually in Arroyo Grande, which is about average compared to other places in California. The rainiest season is Spring when it rains 49% of the time and the driest is Autumn with only a 3% chance of a rainy day.

February is the rainiest month in Groveland with 9.2 days of rain, and July is the driest month with only 0.3 rainy days. There are 59.7 rainy days annually in Groveland, which is about average compared to other places in California. The rainiest season is Spring when it rains 44% of the time and the driest is Autumn with only a 4% chance of a rainy day.

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

An annual snowfall of 6.1 inches in Groveland means that it is snowier than most places in California.

Any measurable snowfall is a rare occurance in Arroyo Grande.

March is the snowiest month in Groveland with 1.7 inches of snow, and 4 months of the year have significant snowfall.