Daly City climate
Daly City (California, United States) has a warm-summer Mediterranean climate (Köppen Csb). The average temperature over the year is 13 °C55 °F, and about 516 mm20 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Daly City climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1355 | 846 | 1051 | 883.5 |
| Feb | 1355 | 847 | 1151 | 873.4 |
| Mar | 1457 | 948 | 1152 | 742.9 |
| Apr | 1457 | 948 | 1253 | 381.5 |
| May | 1558 | 1050 | 1254 | 170.7 |
| Jun | 1661 | 1152 | 1356 | 60.3 |
| Jul | 1762 | 1254 | 1458 | 20.1 |
| Aug | 1864 | 1355 | 1559 | 20.1 |
| Sep | 1865 | 1355 | 1660 | 40.2 |
| Oct | 1864 | 1253 | 1559 | 261.0 |
| Nov | 1560 | 1050 | 1355 | 552.2 |
| Dec | 1355 | 847 | 1151 | 1154.5 |
| Year | 1865 | 846 | 1355 | 51620 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 84% | 58% | 2.5 | 9:49 |
| Feb | 83% | 58% | 3.4 | 10:45 |
| Mar | 84% | 58% | 4.6 | 11:51 |
| Apr | 83% | 53% | 6.0 | 13:08 |
| May | 85% | 51% | 6.7 | 14:11 |
| Jun | 85% | 44% | 7.3 | 14:45 |
| Jul | 86% | 56% | 6.5 | 14:31 |
| Aug | 86% | 57% | 5.8 | 13:36 |
| Sep | 83% | 46% | 5.1 | 12:22 |
| Oct | 79% | 44% | 4.0 | 11:09 |
| Nov | 80% | 50% | 2.8 | 10:05 |
| Dec | 82% | 59% | 2.1 | 9:34 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Daly City is like
The warmest month is September, with an average high of 18 °C65 °F and a low of 13 °C55 °F. The coldest is January, when highs average 13 °C55 °F and lows 8 °C46 °F. Seasonal differences are small — just 5.3 °C9.6 °F between the warmest and the coolest month.
Annual precipitation is moderate at about 516 mm20 in. The wettest three-month stretch is December–February, which brings 56% of the annual total. Months with less than 20 mm0.8 in on average: May–September. The wettest month is December (115 mm4.5 in), the driest is July (2 mm0.1 in).
Relative humidity ranges from 79% in October to 86% in July. The clearest skies (lowest average cloud amount, 44%) are typical of October. Average wind speed near the ground ranges from 10 km/h (6 mph) in October to 14 km/h (9 mph) in May. Daylight lasts from about 9.6 hours in December to 14.8 hours in June.
Best time to visit Daly City
Based on these averages, the most comfortable months for sightseeing and outdoor activities are August–October: average highs of 18 °C64 °F to 18 °C65 °F with 2 mm0.1 in to 26 mm1.0 in of precipitation per month.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Daly City
- Winter (December–February) — highs around 13 °C55 °F, lows around 8 °C46 °F, about 97 mm3.8 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an umbrella or light rain jacket.
- Spring (March–May) — highs 1457 to 15 °C58 °F, lows 948 to 10 °C50 °F, about 43 mm1.7 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Summer (June–August) — highs 1661 to 18 °C64 °F, lows 1152 to 13 °C55 °F, about 3 mm0.1 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Autumn (September–November) — highs 1560 to 18 °C65 °F, lows 1050 to 13 °C55 °F, about 28 mm1.1 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
How Daly City compares
Compared with San Francisco, about 9 km to the northeast, Daly City is on average 1.3 °C2.3 °F cooler and receives 12% less precipitation (516 mm20 in vs 586 mm23 in). The difference is largest in June (3 °C5.3 °F cooler).
Of the 222 places in the United States covered by World Climates, Daly City is the 137th warmest by annual mean temperature and the 163rd wettest by annual precipitation. See all of them on the United States climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Valparaíso (Chile, BSk), Talcahuano (Chile, Csb) and Concepción (Chile, Csb).
The same NASA POWER grid cell also contains San Mateo (pop. 103,536). Their long-term averages in this dataset are essentially the same as for Daly City, so they do not have separate pages.
Nearby places
- San Francisco 9 km · 14 °C57 °F · 586 mm23 in
- Hayward 34 km · 15 °C59 °F · 511 mm20 in
- Vallejo 48 km · 14 °C57 °F · 586 mm23 in
- Concord 48 km · 15 °C59 °F · 467 mm18 in
- San Jose 64 km · 15 °C60 °F · 511 mm20 in
- Antioch 67 km · 15 °C60 °F · 467 mm18 in
- Fairfield 71 km · 15 °C60 °F · 467 mm18 in
- Santa Rosa 85 km · 16 °C61 °F · 688 mm27 in
Frequently asked questions
What is the warmest month in Daly City?
September is the warmest month in Daly City, with an average high of 18 °C (65 °F) and an average low of 13 °C (55 °F).
What is the coldest month in Daly City?
January is the coldest month, with an average high of 13 °C (55 °F) and an average low of 8 °C (46 °F).
When does it rain the most in Daly City?
December is the wettest month with about 115 mm (4.5 in) of precipitation; July is the driest with about 2 mm (0.1 in).
What is the best time to visit Daly City?
Judging by long-term averages, the most comfortable months are August–October.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 66 m, while Daly City lies at about 124 m. Temperatures on this page were therefore adjusted by −0.4 °C0.7 °F using the standard lapse rate of 6.5 °C per 1,000 m.