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.
Today
111°F
Sunny
Sunny, with a high near 111. Heat index values as high as 116. South wind 6 to 13 mph, with gusts as high as 23 mph.
7-day forecast for Big River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 111°F | Sunny | 6 to 13 mph S | 1% |
| Tonight | 84°F | Mostly Clear | 2 to 13 mph SSE | 1% |
| Wednesday | 110°F | Sunny | 3 to 10 mph SSE | 0% |
| Wednesday Night | 84°F | Partly Cloudy | 2 to 10 mph S | 0% |
| Thursday | 111°F | Sunny | 2 to 9 mph S | 5% |
| Thursday Night | 86°F | Mostly Clear | 3 to 7 mph S | 5% |
| Friday | 113°F | Sunny | 3 to 8 mph S | 3% |
| Friday Night | 87°F | Mostly Clear | 7 mph S | 3% |
| Saturday | 113°F | Sunny | 5 to 9 mph S | 2% |
| Saturday Night | 87°F | Mostly Clear | 5 to 9 mph S | 2% |
| Sunday | 111°F | Slight Chance Showers And Thunderstorms | 5 to 12 mph S | 15% |
| Sunday Night | 84°F | Slight Chance Showers And Thunderstorms | 5 to 12 mph SSE | 15% |
| Monday | 108°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 13 mph SSE | 11% |
| Monday Night | 82°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 13 mph S | 11% |
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
Nearby towns & communities
Adelanto
Apple Valley
Baker
Barstow
Big Bear City
Big Bear Lake
Bloomington
Bluewater
Chino
Chino Hills
Colton
Crestline
Fontana
Fort Irwin
Grand Terrace
Hesperia
Highland
Homestead Valley
Homewood Canyon
Joshua Tree
Lake Arrowhead
Lenwood
Loma Linda
Lucerne Valley
Lytle Creek
Mentone
Montclair
Morongo Valley
Mountain View Acres
Muscoy
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 Aug 4, 2026.