Lacey (WA) Temperature by Month

The average annual maximum temperature in Lacey, 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 August. This page covers monthly averages, day-night differences, and how Lacey compares to cities worldwide.

Depending on the time of the year, temperatures range from warm to cold in Lacey. Nighttime lows follow the same pattern, ranging from 11°C (52°F) to 0°C (32°F).

The chart below illustrates the average maximum day and minimum night temperatures in Lacey by month:

Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. August, the warmest month of the year, receives 277 hours of sunshine.

The chart below shows the average temperature throughout the year:

Lacey'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:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.

Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate, hot dry summers and mild wet winters.

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.

Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.

Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.

For more on Lacey's weather, including monthly rainfall, sunshine hours, and humidity, visit our Lacey climate page.