Big River, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Big River, a community in San Bernardino County, California.
This Afternoon
100°F
Sunny
Sunny, with a high near 100. South southwest wind around 9 mph, with gusts as high as 18 mph.
7-day forecast for Big River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 100°F | Sunny | 9 mph SSW | 0% |
| Tonight | 72°F | Mostly Clear | 1 to 6 mph E | 0% |
| Saturday | 101°F | Sunny | 1 to 6 mph SSE | 0% |
| Saturday Night | 71°F | Mostly Clear | 0 to 3 mph N | 0% |
| Sunday | 101°F | Mostly Sunny | 2 to 6 mph ESE | 0% |
| Sunday Night | 75°F | Mostly Cloudy | 0 to 3 mph SE | 0% |
| Monday | 100°F | Mostly Sunny | 2 to 10 mph SE | 1% |
| Monday Night | 72°F | Mostly Clear | 2 to 8 mph SE | 3% |
| Tuesday | 99°F | Sunny | 5 mph SE | 4% |
| Tuesday Night | 73°F | Mostly Clear | 0 to 3 mph E | 2% |
| Wednesday | 103°F | Sunny | 6 mph ESE | 3% |
| Wednesday Night | 77°F | Mostly Clear | 5 mph E | 6% |
| Thursday | 103°F | Mostly Sunny | 3 to 7 mph E | 10% |
| Thursday Night | 78°F | Partly Cloudy | 5 mph E | 10% |
Forecast source: National Weather Service (api.weather.gov) for Big River (34.140, -114.362). Updated through the day.
Growing snapshot for Big River
Last spring frost
Jan 12
First fall frost
Dec 19
Growing season
338 days
Hardiness zone
9b
More local growing data for Big River: nearby ZIP 92242 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Parker, Az (2.5 mi from Big River). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.