Lafayette, CA Weather & Growing Conditions
Tonight
48°F
Chance Light Rain then Mostly Cloudy
A chance of rain before 10pm. Mostly cloudy, with a low around 48. East northeast wind 5 to 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Chance Light Rain then Mostly Cloudy | 5 to 8 mph ENE | 52% |
| Wednesday | 63°F | Sunny | 6 mph NNW | 1% |
| Wednesday Night | 48°F | Partly Cloudy | 2 to 6 mph W | 0% |
| Thursday | 68°F | Sunny | 3 mph N | 0% |
| Thursday Night | 49°F | Mostly Clear | 3 mph SW | 0% |
| Friday | 69°F | Sunny | 2 mph ENE | 0% |
| Friday Night | 49°F | Clear | 2 mph E | 0% |
| Saturday | 71°F | Sunny | 0 to 5 mph NE | 0% |
| Saturday Night | 51°F | Mostly Clear | 2 mph WSW | 0% |
| Sunday | 70°F | Mostly Sunny | 0 to 3 mph N | 0% |
| Sunday Night | 52°F | Partly Cloudy | 2 mph W | 0% |
| Monday | 68°F | Partly Sunny | 3 mph SW | 1% |
| Monday Night | 52°F | Partly Cloudy | 3 mph SW | 1% |
| Tuesday | 68°F | Mostly Sunny | 2 mph WSW | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lafayette, CA
Last spring frost
Jan 7
First fall frost
Dec 19
Growing season
346 days
Hardiness zone
9b
Explore more for Lafayette, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Concord Wwtp, Ca (6.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.