2025 Compare Climate & Weather:
St. Augustine, FL vs Boulder, CO

Highlights

On average, there are 245 sunny days per year in Boulder. St. Augustine averages 223 sunny days per year. The US average is 205 sunny days.

Boulder, Colorado gets 18.1 inches of rain, on average, per year. St. Augustine, Florida gets 50.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Boulder averages 71.1 inches of snow per year. St. Augustine averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Boulder, Colorado
Summer High: the July high is around 88.1 degrees
Winter Low: the January low is 18.9
Rain: averages 18.1 inches of rain a year
Snow: averages 71.1 inches of snow a year

St. Augustine, Florida
Summer High: the July high is around 90.6 degrees
Winter Low: the January low is 45.2
Rain: averages 50.9 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Boulder is 7.1 (10=best), which means it is about average compared to other places in Colorado.

The annual BestPlaces Comfort Index for St. Augustine is 7.3 (10=best), which means it is one of the most pleasant places in Florida.

Today's Weather - St. Augustine, FL

71°F

Today's Weather - Boulder, CO

55°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: St. Augustine / Boulder

July is the hottest month for St. Augustine with an average high temperature of 90.6°, which ranks it as about average compared to other places in Florida. In St. Augustine, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Augustine are April, October and November.

July is the hottest month for Boulder with an average high temperature of 88.1°, which ranks it as about average compared to other places in Colorado. In Boulder, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Boulder are September, June and May.

January has the coldest nighttime temperatures for St. Augustine with an average of 45.2°. This is colder than most places in Florida.

December has the coldest nighttime temperatures for Boulder with an average of 18.3°. This is one of the warmest places in Colorado.

In St. Augustine, there are 56.2 days annually when the high temperature is over 90°, which is cooler than most places in Florida.

In Boulder, there are 32.4 days annually when the high temperature is over 90°, which is about average compared to other places in Colorado.

In St. Augustine, there are 6.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Florida.

In Boulder, there are 151.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Colorado.

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

In Boulder, there are 5.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Colorado.

September is the wettest month in St. Augustine with 7.7 inches of rain, and the driest month is December with 2.4 inches. The wettest season is Autumn with 36% of yearly precipitation and 17% occurs in Spring, which is the driest season. The annual rainfall of 50.9 inches in St. Augustine means that it is drier than most places in Florida.


May is the wettest month in Boulder with 2.5 inches of rain, and the driest month is January with 0.6 inches. The wettest season is Summer with 37% of yearly precipitation and 11% occurs in Spring, which is the driest season. The annual rainfall of 18.1 inches in Boulder means that it is wetter than most places in Colorado.

August is the rainiest month in St. Augustine with 15.2 days of rain, and April is the driest month with only 5.8 rainy days. There are 118.1 rainy days annually in St. Augustine, which is rainier than most places in Florida. The rainiest season is Autumn when it rains 36% of the time and the driest is Summer with only a 17% chance of a rainy day.

May is the rainiest month in Boulder with 10.5 days of rain, and January is the driest month with only 4.7 rainy days. There are 88.0 rainy days annually in Boulder, which is rainier than most places in Colorado. The rainiest season is Autumn 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 St. Augustine, ranking it as one of the least snowy places in Florida.

An annual snowfall of 71.1 inches in Boulder means that it is snowier than most places in Colorado.

Any measurable snowfall is a rare occurance in St. Augustine.

March is the snowiest month in Boulder with 14.3 inches of snow, and 9 months of the year have significant snowfall.