Johannesburg, CA Weather & Growing Conditions
Today
103°F
Sunny
Sunny, with a high near 103. Southwest wind 5 to 17 mph, with gusts as high as 29 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 103°F | Sunny | 5 to 17 mph SW | 0% |
| Tonight | 72°F | Clear | 6 to 17 mph WSW | 0% |
| Wednesday | 103°F | Sunny | 5 to 16 mph SW | 0% |
| Wednesday Night | 73°F | Clear | 3 to 16 mph SW | 0% |
| Thursday | 104°F | Sunny | 3 to 10 mph SW | 0% |
| Thursday Night | 74°F | Clear | 3 to 14 mph SW | 0% |
| Friday | 104°F | Sunny | 3 to 9 mph SSW | 0% |
| Friday Night | 75°F | Clear | 5 to 14 mph SW | 0% |
| Saturday | 104°F | Sunny | 5 to 12 mph SW | 1% |
| Saturday Night | 76°F | Clear | 6 to 14 mph SW | 1% |
| Sunday | 103°F | Sunny | 6 to 16 mph SSW | 1% |
| Sunday Night | 74°F | Mostly Clear | 10 to 17 mph SSW | 1% |
| Monday | 99°F | Sunny | 10 to 20 mph SSW | 4% |
| Monday Night | 70°F | Mostly Clear | 12 to 21 mph SSW | 2% |
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 (4.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.