San Bernardino, CA Weather & Growing Conditions
This Afternoon
89°F
Sunny
Sunny, with a high near 89. Southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 89°F | Sunny | 5 mph SW | 0% |
| Tonight | 66°F | Mostly Clear | 0 to 10 mph S | 0% |
| Sunday | 88°F | Mostly Sunny | 0 to 10 mph SW | 1% |
| Sunday Night | 64°F | Partly Cloudy | 0 to 5 mph SW | 1% |
| Monday | 82°F | Sunny | 0 to 10 mph SW | 1% |
| Monday Night | 62°F | Mostly Clear | 0 to 5 mph W | 1% |
| Tuesday | 84°F | Sunny | 0 to 5 mph NW | 0% |
| Tuesday Night | 65°F | Clear | 0 to 10 mph NW | 0% |
| Wednesday | 94°F | Sunny | 0 to 5 mph NW | 0% |
| Wednesday Night | 69°F | Clear | 0 to 10 mph NW | 0% |
| Thursday | 96°F | Sunny | 0 to 5 mph SW | 3% |
| Thursday Night | 70°F | Mostly Clear | 0 to 5 mph S | 1% |
| Friday | 93°F | Sunny | 0 to 5 mph S | 4% |
| Friday Night | 69°F | Mostly Clear | 0 to 5 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Bernardino, CA
Last spring frost
May 5
First fall frost
Nov 2
Growing season
176 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, Lake Arrowhead, Ca (9.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.