Goodyear (AZ) Temperature by Month

Goodyear in Arizona, United States of America sees significant seasonal temperature differences, with daytime highs between 18°C (64°F) in December and 41°C (106°F) in July, averaging 30°C (86°F) annually. Explore the full monthly breakdown below.

Visitors to Goodyear will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range from 28°C (82°F) in July to 5°C (41°F) in December.

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

The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. July, the city's warmest month, averages 378 hours of sunshine.

The chart below shows the average temperature throughout the year:

Goodyear's average annual maximum temperature is 30°C (86°F). To put that in context, here's how it compares to a few well-known destinations:

Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters, and seasons reversed compared to Europe.

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

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Goodyear, December is the coolest month, with average highs of 18°C (64°F) and humidity around 51%, considered moderate. In July, the warmest month, temperatures average 41°C (106°F) with 31% humidity, conditions that feel low. For a full picture, see our humidity page.

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 Goodyear this rarely lasts long on the ground.

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