Three Rivers (CA) Temperature by Month

The average annual maximum temperature in Three Rivers, California, United States of America is 25°C (77°F), with daytime highs ranging from 14°C (57°F) in December to 37°C (99°F) in July. This page covers monthly averages, day-night differences, and how Three Rivers compares to cities worldwide.

In Three Rivers, temperatures differ significantly between summer and winter months. Nighttime lows reflect this range, dropping from 20°C (68°F) in July to 3°C (37°F) in December.

The chart below illustrates the average maximum day and minimum night temperatures in Three Rivers 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:

Three Rivers'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:

Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.

Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.

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

Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.

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