2025 Compare Climate & Weather:
Gilroy, CA vs Longmont, CO

Highlights

On average, there are 247 sunny days per year in Longmont. Gilroy averages 261 sunny days per year. The US average is 205 sunny days.

Longmont, Colorado gets 14.8 inches of rain, on average, per year. Gilroy, California gets 21.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Longmont averages 36.4 inches of snow per year. Gilroy averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Longmont, Colorado
Summer High: the July high is around 89.1 degrees
Winter Low: the January low is 12.5
Rain: averages 14.8 inches of rain a year
Snow: averages 36.4 inches of snow a year

Gilroy, California
Summer High: the July high is around 83.4 degrees
Winter Low: the January low is 39.6
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 Longmont is 7.2 (10=best), which means it is more comfortable than most places in Colorado.

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

Today's Weather - Gilroy, CA

70°F

Today's Weather - Longmont, CO

55°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Gilroy / Longmont

July is the hottest month for Gilroy with an average high temperature of 83.4°, which ranks it as cooler than most places in California. In Gilroy, there are 7 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Gilroy are October, June and May.

July is the hottest month for Longmont with an average high temperature of 89.1°, which ranks it as warmer than most places in Colorado. In Longmont, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Longmont are September, June and May.

January has the coldest nighttime temperatures for Gilroy with an average of 39.6°. This is warmer than most places in California.

December has the coldest nighttime temperatures for Longmont with an average of 12.2°. This is colder than most places in Colorado.

In Gilroy, there are 29.3 days annually when the high temperature is over 90°, which is cooler than most places in California.

In Longmont, there are 37.5 days annually when the high temperature is over 90°, which is hotter than most places in Colorado.

In Gilroy, there are 10.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Longmont, there are 178.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Colorado.

In Gilroy, 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 Longmont, there are 11.2 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Colorado.

February is the wettest month in Gilroy with 4.3 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 59% of yearly precipitation and 0% occurs in Autumn, which is the driest season. The annual rainfall of 21.4 inches in Gilroy means that it is wetter than most places in California.


May is the wettest month in Longmont with 2.3 inches of rain, and the driest month is February with 0.4 inches. The wettest season is Summer with 38% of yearly precipitation and 10% occurs in Spring, which is the driest season. The annual rainfall of 14.8 inches in Longmont means that it is drier than most places in Colorado.

January is the rainiest month in Gilroy with 10.1 days of rain, and July is the driest month with only 0.2 rainy days. There are 58.6 rainy days annually in Gilroy, 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 2% chance of a rainy day.

May is the rainiest month in Longmont with 9.8 days of rain, and January is the driest month with only 4.2 rainy days. There are 79.2 rainy days annually in Longmont, which is about average compared to other places in Colorado. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 17% chance of a rainy day.

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

An annual snowfall of 36.4 inches in Longmont means that it is less snowy than most places in Colorado.

Any measurable snowfall is a rare occurance in Gilroy.

March is the snowiest month in Longmont with 7.3 inches of snow, and 7 months of the year have significant snowfall.