Rosemead (CA) Temperatures: Monthly Averages and Year-Round Insights
On this page, we’ll explore Rosemead’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 climate in Rosemead is known for significant temperature differences throughout the year. Average maximum daytime temperatures reach a very warm 32°C in August. In December, the coolest month of the year, temperatures drop to a pleasant 20°C. At night, expect even cooler temperatures, with lows averaging around 8°C.
The chart below illustrates the average maximum day and minimum night temperatures in Rosemead by month:
The minimum temperature is commonly observed between 4 AM and 6 AM, with the maximum occurring around 3 PM, when the sun’s strength is at its peak. August, the city’s warmest month, sees 347 hours of sunshine.
The chart below shows the average temperature throughout the year:
December, the city’s coldest month, receives about 80 mm of rainfall spread over roughly 8 days. For more information, please visit our Rosemead 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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Rosemead Temperatures Compared World Wide
Rosemead’s average annual maximum temperature is 26°C. Let’s compare this with some popular tourist destinations:
In Barcelona, Spain, the average annual temperature is around 21°C, resulting in warm summers and mild winters throughout the year.
In contrast, in Zermatt, Switzerland, the average annual temperature is significantly lower at 4°C, with mild summers and very cold winters.
Chicago, USA, has a significant seasonal range, with an average annual temperature of 15°C.
Melbourne, Australia, has a slightly cooler climate, with an average annual temperature of 20°C.
How does the temperature feel?
Humidity is an essential factor in how you experience temperature. When a warm period is accompanied by high humidity, it results in a higher perceived temperature. This is especially true when temperatures exceed 25°C, as it can cause greater discomfort.
In Rosemead, during the coolest month, December, you will experience 52% humidity, which is considered moderate. This is accompanied by an average maximum temperature of 20°C. In the warmest month, August, the humidity is 71% combined with an average maximum temperature of 32°C, which creates a high-feel temperature. Explore our detailed page on humidity levels for further details.
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 Rosemead’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Rosemead climate page.
Current temperature in Rosemead (CA)
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