Johannesburg, CA Weather & Growing Conditions
Today
65°F
Sunny
Sunny. High near 65, with temperatures falling to around 60 in the afternoon. Northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 65°F | Sunny | 5 mph NE | 0% |
| Tonight | 49°F | Partly Cloudy | 6 mph N | 0% |
| Thursday | 66°F | Mostly Sunny | 7 mph NE | 0% |
| Thursday Night | 50°F | Mostly Clear | 5 to 8 mph NNE | 0% |
| Friday | 67°F | Sunny | 10 mph NE | 0% |
| Friday Night | 50°F | Clear | 8 mph NE | 0% |
| Saturday | 70°F | Sunny | 9 mph NE | 0% |
| Saturday Night | 51°F | Mostly Clear | 7 mph NE | 0% |
| Sunday | 70°F | Sunny | 6 to 9 mph NE | 0% |
| Sunday Night | 53°F | Mostly Clear | 6 mph NE | 0% |
| Monday | 70°F | Mostly Sunny | 6 mph ENE | 0% |
| Monday Night | 53°F | Partly Cloudy | 2 to 6 mph NNW | 0% |
| Tuesday | 70°F | Sunny | 2 to 6 mph NE | 0% |
| Tuesday Night | 54°F | Mostly Clear | 3 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Johannesburg, CA
Last spring frost
Mar 19
First fall frost
Nov 25
Growing season
251 days
Hardiness zone
9a
Explore more for Johannesburg, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Randsburg, Ca (0.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.