Fresno (CA) Temperature by Month
Fresno in California, United States of America sees significant seasonal temperature differences, with daytime highs between 14°C (57°F) in December and 37°C (99°F) in July, averaging 26°C (79°F) annually. Explore the full monthly breakdown below.
Fresno Monthly Temperatures
Visitors to Fresno will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range 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 Fresno by month:
The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. July, the warmest month, gets 429 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Fresno 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.
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Fresno vs World: Temperature Compared
Fresno'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:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Reykjavík, Iceland averages 9°C (48°F) a year — mild summers by Icelandic standards, but cold winters and frequent wind.
Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.
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 Fresno?
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 Fresno, December is the coolest month, with average highs of 14°C (57°F) and humidity around 82% — considered very high. In July, the warmest month, temperatures average 37°C (99°F) with 38% humidity — conditions that feel low. 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.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Fresno's weather — including monthly rainfall, sunshine hours, and humidity — visit our Fresno climate page.
