Mad River, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mad River, a community in Trinity County, California.
Overnight
60°F
Clear
Clear, with a low around 60. East southeast wind around 5 mph.
7-day forecast for Mad River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Clear | 5 mph ESE | 0% |
| Tuesday | 96°F | Sunny | 5 to 10 mph SW | 0% |
| Tuesday Night | 61°F | Mostly Clear | 1 to 9 mph E | 0% |
| Wednesday | 94°F | Sunny | 1 to 10 mph SSW | 0% |
| Wednesday Night | 60°F | Clear | 0 to 8 mph NW | 0% |
| Thursday | 93°F | Sunny | 1 to 8 mph SW | 0% |
| Thursday Night | 59°F | Clear | 0 to 7 mph NW | 0% |
| Friday | 96°F | Sunny | 0 to 8 mph WNW | 0% |
| Friday Night | 59°F | Clear | 1 to 8 mph N | 0% |
| Saturday | 93°F | Sunny | 1 to 9 mph NW | 0% |
| Saturday Night | 56°F | Mostly Clear | 2 to 9 mph N | 0% |
| Sunday | 87°F | Sunny | 2 to 9 mph N | 0% |
| Sunday Night | 53°F | Mostly Clear | 2 to 9 mph N | 0% |
| Monday | 86°F | Sunny | 2 to 9 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Mad River (40.433, -123.492). Updated through the day.
Growing snapshot for Mad River
Last spring frost
Mar 4
First fall frost
Nov 22
Growing season
264 days
Hardiness zone
8b
More local growing data for Mad River: nearby ZIP 95552 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Burnt Ranch
Coffee Creek
Douglas City
Hayfork
Hyampom
Junction City
Lewiston
Platina
Post Mountain
Ruth
Salyer
Trinity Center
Trinity Village
Weaverville
Climate data from the nearest NOAA station, Grizzly Creek Sp, Ca (27.7 mi from Mad River). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.