Newbury Park (CA) Temperature by Month

The average annual maximum temperature in Newbury Park, California, United States of America is 23°C (73°F), with daytime highs ranging from 18°C (64°F) in December to 27°C (81°F) in September. This page covers monthly averages, day-night differences, and how Newbury Park compares to cities worldwide.

The weather in Newbury Park changes moderately throughout the year, offering enough variation to appreciate each season. Nights are cooler, with lows ranging from 15°C (59°F) to 7°C (45°F).

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

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. September, the city's warmest month, sees 278 hours of sunshine.

The chart below shows the average temperature throughout the year:

Newbury Park's average annual maximum temperature is 23°C (73°F). To put that in context, here's how it compares to a few well-known destinations:

Seville, Spain averages 23°C (73°F) a year, one of the warmer cities in Western Europe, with long hot summers.

Queenstown, New Zealand averages 10°C (50°F) annually, remember seasons are flipped, so its coldest months fall in June and July.

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm summers.

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 Newbury Park, December is the coolest month, with average highs of 18°C (64°F) and humidity around 52%, considered moderate. In September, the warmest month, temperatures average 27°C (81°F) with 67% humidity, conditions that feel high. 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.

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 Newbury Park's weather, including monthly rainfall, sunshine hours, and humidity, visit our Newbury Park climate page.