San Bernardino, CA Weather & Growing Conditions
Today
74°F
Sunny
Sunny, with a high near 74. South wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Sunny | 0 mph | 0% |
| Tonight | 55°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Thursday | 77°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Thursday Night | 57°F | Partly Cloudy | 5 to 10 mph N | 0% |
| Friday | 79°F | Sunny | 5 to 10 mph N | 0% |
| Friday Night | 57°F | Clear | 10 to 15 mph N | 0% |
| Saturday | 81°F | Sunny | 0 to 10 mph NE | 0% |
| Saturday Night | 57°F | Clear | 0 to 15 mph N | 0% |
| Sunday | 82°F | Sunny | 0 to 5 mph N | 0% |
| Sunday Night | 58°F | Mostly Clear | 0 to 15 mph N | 0% |
| Monday | 80°F | Mostly Sunny | 0 to 5 mph N | 0% |
| Monday Night | 58°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Tuesday | 79°F | Sunny | 0 mph | 0% |
| Tuesday Night | 58°F | Mostly Clear | 0 to 5 mph NE | 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 Nov 4, 2026.