Olympia (WA) Temperature by Month
The average annual maximum temperature in Olympia, Washington State, United States of America is 16°C (61°F), with daytime highs ranging from 7°C (45°F) in December to 25°C (77°F) in July. This page covers monthly averages, day-night differences, and how Olympia compares to cities worldwide.
Olympia Monthly Temperatures
In Olympia, temperatures can shift dramatically between warm in summer and cold in winter. Nights follow the same pattern, with lows ranging from 11°C (52°F) in July to 0°C (32°F) in December.
The chart below illustrates the average maximum day and minimum night temperatures in Olympia by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. July, the warmest month, averages 312 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Olympia vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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moderate
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Olympia vs World: Temperature Compared
Olympia's average annual maximum temperature is 16°C (61°F). To put that in context, here's how it compares to a few well-known destinations:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters — and seasons reversed compared to Europe.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Olympia this rarely lasts long on the ground.
For more on Olympia's weather — including monthly rainfall, sunshine hours, and humidity — visit our Olympia climate page.
