Millbrae, CA Weather & Growing Conditions
Today
81°F
Slight Chance Drizzle then Sunny
A slight chance of drizzle before 9am. Sunny. High near 81, with temperatures falling to around 77 in the afternoon. West southwest wind 2 to 12 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Slight Chance Drizzle then Sunny | 2 to 12 mph WSW | 15% |
| Tonight | 56°F | Mostly Clear | 3 to 10 mph SW | 1% |
| Wednesday | 80°F | Sunny | 3 to 10 mph WSW | 0% |
| Wednesday Night | 58°F | Mostly Clear | 2 to 10 mph WSW | 0% |
| Thursday | 79°F | Mostly Sunny | 1 to 10 mph WSW | 0% |
| Thursday Night | 58°F | Mostly Clear | 2 to 10 mph W | 0% |
| Friday | 82°F | Sunny | 2 to 12 mph W | 0% |
| Friday Night | 59°F | Mostly Clear | 3 to 12 mph W | 0% |
| Saturday | 79°F | Sunny | 2 to 12 mph WSW | 0% |
| Saturday Night | 60°F | Mostly Clear | 8 to 12 mph WSW | 0% |
| Sunday | 76°F | Sunny | 8 to 15 mph WSW | 0% |
| Sunday Night | 58°F | Mostly Clear | 9 to 15 mph WSW | 0% |
| Monday | 73°F | Sunny | 9 to 15 mph WSW | 0% |
| Monday Night | 57°F | Partly Cloudy | 8 to 15 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Millbrae, CA
Last spring frost
Dec 29
First fall frost
Dec 26
Growing season
365 days
Hardiness zone
10a
Explore more for Millbrae, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, San Francisco Intl Ap, Ca (2.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.