2025 Compare Climate & Weather:
Rockwall, TX vs Olympia, WA

Highlights

On average, there are 136 sunny days per year in Olympia. Rockwall averages 236 sunny days per year. The US average is 205 sunny days.

Olympia, Washington gets 52.7 inches of rain, on average, per year. Rockwall, Texas gets 40.3 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Olympia averages 6 inches of snow per year. Rockwall averages 0.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Olympia, Washington
Summer High: the July high is around 77.1 degrees
Winter Low: the January low is 33.9
Rain: averages 52.7 inches of rain a year
Snow: averages 6 inches of snow a year

Rockwall, Texas
Summer High: the July high is around 94.3 degrees
Winter Low: the January low is 33.9
Rain: averages 40.3 inches of rain a year
Snow: averages 0.6 inches of snow a year

BestPlaces Comfort Index

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

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

Today's Weather - Rockwall, TX

63°F

Today's Weather - Olympia, WA

52°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Rockwall / Olympia

August is the hottest month for Rockwall with an average high temperature of 95.5°, which ranks it as about average compared to other places in Texas. In Rockwall, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Rockwall are October, April and May.

August is the hottest month for Olympia with an average high temperature of 78.0°, which ranks it as about average compared to other places in Washington. In Olympia, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Olympia are August, July and September.

January has the coldest nighttime temperatures for Rockwall with an average of 33.9°. This is colder than most places in Texas.

December has the coldest nighttime temperatures for Olympia with an average of 32.9°. This is about average compared to other places in Washington.

In Rockwall, there are 84.4 days annually when the high temperature is over 90°, which is cooler than most places in Texas.

In Olympia, there are 5.7 days annually when the high temperature is over 90°, which is about average compared to other places in Washington.

In Rockwall, there are 37.5 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Texas.

In Olympia, there are 61.6 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Washington.

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

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

May is the wettest month in Rockwall with 5.0 inches of rain, and the driest month is August with 1.9 inches. The wettest season is Summer with 30% of yearly precipitation and 20% occurs in Autumn, which is the driest season. The annual rainfall of 40.3 inches in Rockwall means that it is wetter than most places in Texas.


November is the wettest month in Olympia with 9.0 inches of rain, and the driest month is July with 0.8 inches. The wettest season is Spring with 41% of yearly precipitation and 7% occurs in Autumn, which is the driest season. The annual rainfall of 52.7 inches in Olympia means that it is wetter than most places in Washington.

May is the rainiest month in Rockwall with 8.7 days of rain, and July is the driest month with only 4.6 rainy days. There are 81.2 rainy days annually in Rockwall, which is rainier than most places in Texas. The rainiest season is Summer when it rains 29% of the time and the driest is Autumn with only a 20% chance of a rainy day.

November is the rainiest month in Olympia with 21.0 days of rain, and July is the driest month with only 4.8 rainy days. There are 167.2 rainy days annually in Olympia, which is rainier than most places in Washington. The rainiest season is Spring when it rains 34% of the time and the driest is Autumn with only a 11% chance of a rainy day.

An annual snowfall of 0.6 inches in Rockwall means that it is snowier than most places in Texas.

An annual snowfall of 6.0 inches in Olympia means that it is about average compared to other places in Washington.

December is the snowiest month in Rockwall with 0.1 inches of snow, and no months of the year have significant snowfall.

February is the snowiest month in Olympia with 2.3 inches of snow, and 4 months of the year have significant snowfall.