Daly City, California Weather
Coastal fog thickens at dawn. Day 76 of spring. Read this microseason across nine climate regions →
Daly City weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Foggy——66°51°—
- ThursdayJun 4Foggy——66°50°0°
- FridayJun 5Clear——71°51°+5°
- SaturdayJun 6Overcast——62°54°-9°
- SundayJun 7Overcast——66°51°+4°
- MondayJun 8Overcast10%—64°53°-2°
- TuesdayJun 9Overcast——65°54°+1°
PM2.5/PM10 ratio 0.62 with 17 mph wind — characteristic of long-range haze transport rather than a local source. AQI flat over the last 6 hours (within ±3 points).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 35 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 35
- UV peak
- 4.9 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 35
PM × Wind × Precip
PM2.5/PM10 ratio 0.62 with 17 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.62
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- transport
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
The higher the clouds, the finer the weather.
- Moonrise
- 5:56 AM
- Moonset
- 3:22 PM
- In sign
- ♑︎ Capricorn
Coastal fog thickens at dawn
Daly City at a glance
- Today vs. normal: 11°F below the seasonal normal for this latitude
- Last frost: April 2 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 3, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Daly City's warmest month is September (~63°F mean) and its coldest is January (~52°F). Rainfall peaks in December (4.8 inches) and bottoms out in July (0.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 52° | 4.4″ | 8 |
| February | 54° | 4.4″ | 8 |
| March | 56° | 3.1″ | 7 |
| April | 56° | 1.6″ | 4 |
| May | 58° | 0.7″ | 2 |
| June | 60° | 0.2″ | 1 |
| July | 60° | 0.0″ | 0 |
| August | 62° | 0.1″ | 0 |
| September | 63° | 0.1″ | 0 |
| October | 62° | 0.9″ | 2 |
| November | 57° | 2.6″ | 5 |
| December | 53° | 4.8″ | 8 |
Regional context
Daly City sits within a hot-summer Mediterranean climate region — a cohort of nearby cities that share similar temperature ranges, seasonal patterns, and growing conditions.
Similar climates: Los Angeles, CA, San Francisco, CA, San Diego, CA, Riverside, CA, Sacramento, CA.
Naturalist notes
By late May, fledgling Violet-green Swallows begin testing their wings over the scrubby slopes, chasing insects above the fog line in the long evening light.
Bush lupines finish their bloom in June, and their seed pods dry and twist open audibly on warm afternoons, scattering seed onto the gritty soil.
Frequently asked
- When does it freeze in Daly City?
- Daly City's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Daly City?
- December is the wettest month with about 4.8 inches of rain on average; the city receives roughly 23 inches annually.
- What is the warmest month in Daly City?
- September is typically warmest, averaging about 63°F.
- What is the coldest month in Daly City?
- January is typically coldest, averaging about 52°F.
- When can I start a vegetable garden in Daly City?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-April); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Daly City get?
- Daly City averages about 45 rainy days per year.
- What hardiness zone is Daly City?
- Daly City's hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Daly City, California sits in a hot-summer Mediterranean climate zone. January means hover near 52°F while July averages 60°F — just an 8°F seasonal swing.
Over the course of a year, Daly City receives about 23 inches of precipitation spread over roughly 45 rainy days.
Latitude (37.7°N), proximity to large water bodies, and elevation set the rhythm of the year. All three shape what grows here, when frost is likely, and what the day-to-day weather story looks like.