San Bernardino, CA Weather & Growing Conditions
Today
100°F
Sunny
Sunny, with a high near 100. Southwest wind 0 to 10 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 100°F | Sunny | 0 to 10 mph SW | 0% |
| Tonight | 70°F | Mostly Clear | 5 to 10 mph SW | 0% |
| Wednesday | 99°F | Sunny | 0 to 10 mph SW | 0% |
| Wednesday Night | 70°F | Mostly Clear | 0 to 10 mph W | 0% |
| Thursday | 102°F | Sunny | 0 to 10 mph SW | 2% |
| Thursday Night | 71°F | Mostly Clear | 0 to 10 mph W | 2% |
| Friday | 103°F | Sunny | 0 to 10 mph W | 0% |
| Friday Night | 72°F | Mostly Clear | 0 to 10 mph W | 0% |
| Saturday | 103°F | Sunny | 0 to 10 mph W | 1% |
| Saturday Night | 72°F | Mostly Clear | 0 to 10 mph SW | 1% |
| Sunday | 102°F | Sunny | 0 to 10 mph SW | 1% |
| Sunday Night | 71°F | Mostly Clear | 0 to 10 mph W | 1% |
| Monday | 98°F | Sunny | 0 to 10 mph SW | 4% |
| Monday Night | 69°F | Mostly Clear | 0 to 10 mph SW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Bernardino, CA
Last spring frost
Jan 27
First fall frost
Dec 19
Growing season
329 days
Hardiness zone
10a
Explore more for San Bernardino, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Redlands, Ca (7.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.