Westminster (CA) Temperatures: Monthly Averages and Year-Round Insights
On this page, we’ll explore Westminster’s temperature statistics in detail, including day and night variations and monthly averages. We’ll also compare the annual temperature to other cities in the United States of America.
Monthly Temperature Averages
The moderate changes in the climate in Westminster ensures gradual weather shifts through each season. On average, maximum daytime temperatures range from a warm 28°C in September to a pleasant 19°C in December. Nighttime temperatures can drop, with averages reaching 8°C in December.
The chart below illustrates the average maximum day and minimum night temperatures in Westminster by month:
The coldest temperatures are usually recorded between 4 AM and 6 AM, while the hottest temperatures occur near 3 PM, at the peak of the sun's warmth. September, the city’s warmest month, receives 290 hours of sunshine.
The chart below shows the average temperature throughout the year:
December, the city’s coldest month, receives about 54 mm of rainfall spread over roughly 8 days. For more information, please visit our Westminster Precipitation page.
Annual Temperatures in the United States of America Compared
The map below shows the annual temperature across the United States of America. You can also select the different months in case you are interested in a specific month.
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Westminster Temperatures Compared World Wide
Westminster’s average annual maximum temperature is 24°C. Let’s compare this with some popular tourist destinations:
The city of Rome, Italy, has an average annual temperature of 20°C, known for its sunny summers and comfortable winters.
In contrast, in Oslo, Norway, the average annual temperature is significantly lower at 10°C, with mild summers and cold winters.
Beijing, China, experiences more extreme temperature shifts, but still averaging 20°C annually.
In Tokyo, Japan, the average annual temperature is 21°C, expect warmer summers and milder winters.
How are these Temperatures Measured?
Generally, temperature data depicting climate is usually given over a 30-year average in order to reduce short-term fluctuations and reveal better long-term trends in climate conditions.
This temperature data is taken from land-based thermometers, ocean buoys, ships, and satellites. These measurements are transmitted to weather stations and climate centers around the globe where they are processed, averaged, and analyzed in order to monitor the trends and create climate models.
Sea vs. Land Temperatures
The influence of nearby oceans or large water bodies significantly affects local temperatures:
- Ocean Influence: Coastal regions tend to have more stable temperatures, as large bodies of water absorb and release heat slowly. This often results in milder winters and cooler summers compared to inland areas.
- Continental Climates: Landmasses well away from large bodies of water tend to show greater extremes in temperature, having hotter summers and colder winters because of the absence of water as a moderating influence.
For more detailed information about Westminster’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Westminster climate page.
Current temperature in Westminster (CA)
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