Monterey Park (CA) Temperature by Month
Monterey Park, California, United States of America has an average annual maximum temperature of 26°C (79°F), ranging from 20°C (68°F) in December to 31°C (88°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Monterey Park Monthly Temperatures
In Monterey Park, temperatures can shift dramatically between very warm in summer and pleasant in winter. Nights follow the same pattern, with lows ranging from 18°C (64°F) in August to 8°C (46°F) in December.
The chart below illustrates the average maximum day and minimum night temperatures in Monterey Park 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 347 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Monterey Park vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Monterey Park vs World: Temperature Compared
Monterey Park's average annual maximum temperature is 26°C (79°F). To put that in context, here's how it compares to a few well-known destinations:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
Beijing, China averages 20°C (68°F) annually, but with big seasonal swings — very cold winters and hot summers.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
What Does the Temperature Feel Like in Monterey Park?
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 Monterey Park, December is the coolest month, with average highs of 20°C (68°F) and humidity around 52% — considered moderate. In August, the warmest month, temperatures average 31°C (88°F) with 71% 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.
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 Monterey Park this rarely lasts long on the ground.
For more on Monterey Park's weather — including monthly rainfall, sunshine hours, and humidity — visit our Monterey Park climate page.
