Johannesburg, CA Weather & Growing Conditions
Overnight
72°F
Clear
Clear. Low around 72, with temperatures rising to around 76 overnight. West southwest wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 72°F | Clear | 8 mph WSW | 0% |
| Tuesday | 103°F | Sunny | 6 to 17 mph WSW | 0% |
| Tuesday Night | 74°F | Clear | 7 to 17 mph WSW | 0% |
| Wednesday | 103°F | Sunny | 7 to 16 mph WSW | 0% |
| Wednesday Night | 75°F | Clear | 5 to 16 mph SW | 0% |
| Thursday | 103°F | Sunny | 5 to 10 mph SW | 0% |
| Thursday Night | 76°F | Clear | 5 to 15 mph SW | 0% |
| Friday | 103°F | Sunny | 5 to 10 mph SW | 0% |
| Friday Night | 77°F | Clear | 6 to 14 mph SW | 0% |
| Saturday | 104°F | Sunny | 6 to 13 mph SW | 1% |
| Saturday Night | 77°F | Clear | 7 to 15 mph SW | 1% |
| Sunday | 103°F | Sunny | 7 to 17 mph SSW | 1% |
| Sunday Night | 75°F | Mostly Clear | 10 to 18 mph SSW | 1% |
| Monday | 99°F | Mostly Sunny | 10 to 22 mph SSW | 4% |
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 Aug 4, 2026.