Blacklake, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blacklake, a community in San Luis Obispo County, California.
Today
74°F
Patchy Fog then Partly Sunny
Patchy fog before 11am. Partly sunny, with a high near 74. West wind 5 to 10 mph.
7-day forecast for Blacklake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Patchy Fog then Partly Sunny | 5 to 10 mph W | 1% |
| Tonight | 56°F | Patchy Fog | 0 to 5 mph WNW | 1% |
| Wednesday | 74°F | Patchy Fog then Mostly Sunny | 0 to 10 mph W | 0% |
| Wednesday Night | 58°F | Patchy Fog | 0 to 5 mph NW | 0% |
| Thursday | 75°F | Patchy Fog then Mostly Sunny | 0 to 10 mph WNW | 0% |
| Thursday Night | 57°F | Patchy Fog | 0 to 10 mph NW | 0% |
| Friday | 72°F | Patchy Fog then Mostly Sunny | 0 to 10 mph W | 0% |
| Friday Night | 58°F | Partly Cloudy | 0 to 10 mph WNW | 0% |
| Saturday | 73°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Saturday Night | 59°F | Partly Cloudy | 0 to 10 mph WSW | 0% |
| Sunday | 73°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Sunday Night | 57°F | Partly Cloudy | 0 to 10 mph WNW | 1% |
| Monday | 70°F | Mostly Sunny | 0 to 10 mph WSW | 1% |
| Monday Night | 56°F | Partly Cloudy | 0 to 10 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Blacklake (35.050, -120.539). Updated through the day.
Growing snapshot for Blacklake
Last spring frost
Feb 4
First fall frost
Dec 13
Growing season
315 days
Hardiness zone
9b
More local growing data for Blacklake: nearby ZIP 93444 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Santa Maria Public Ap, Ca (9.9 mi from Blacklake). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.