Daly City (CA) Temperature by Month
Daly City in California, United States of America sees moderate seasonal temperature shifts, with daytime highs between 14°C (57°F) in January and 22°C (72°F) in September, averaging 18°C (64°F) annually. Explore the full monthly breakdown below.
Daly City Monthly Temperatures
The moderate changes in the climate in Daly City ensure gradual weather shifts through each season. At night, temperatures drop to between 13°C (55°F) and 8°C (46°F) depending on the time of year.
The chart below illustrates the average maximum day and minimum night temperatures in Daly City by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. September, the warmest month, averages 270 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Daly City 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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Daly City vs World: Temperature Compared
Daly City's average annual maximum temperature is 18°C (64°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.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
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 Daly City?
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 Daly City, January is the coolest month, with average highs of 15°C (59°F) and humidity around 80% — considered very 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.
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 Daly City's weather — including monthly rainfall, sunshine hours, and humidity — visit our Daly City climate page.
