Merced (CA) Temperature by Month

Merced, California, United States of America has an average annual maximum temperature of 25°C (77°F), ranging from 13°C (55°F) in December to 36°C (97°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

The climate in Merced is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 17°C (63°F) in July to 3°C (37°F) in December.

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

From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak.

The chart below shows the average temperature throughout the year:

Merced's average annual maximum temperature is 25°C (77°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

Beijing, China averages 20°C (68°F) annually, but with big seasonal swings, very cold winters and hot summers.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

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 Merced this rarely lasts long on the ground.

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