Mad River, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mad River, a community in Trinity County, California.
This Afternoon
77°F
Sunny
Sunny, with a high near 77. Northwest wind around 8 mph.
7-day forecast for Mad River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Sunny | 8 mph NW | 0% |
| Tonight | 47°F | Clear | 2 to 8 mph NE | 0% |
| Saturday | 81°F | Sunny | 1 to 7 mph NNE | 0% |
| Saturday Night | 48°F | Partly Cloudy | 1 to 7 mph N | 0% |
| Sunday | 83°F | Mostly Sunny | 0 to 6 mph ENE | 0% |
| Sunday Night | 49°F | Mostly Clear | 1 to 6 mph NNE | 0% |
| Monday | 82°F | Sunny | 1 to 7 mph NNW | 0% |
| Monday Night | 49°F | Mostly Clear | 1 to 7 mph N | 0% |
| Tuesday | 81°F | Sunny | 1 to 8 mph NW | 0% |
| Tuesday Night | 48°F | Mostly Clear | 2 to 8 mph N | 0% |
| Wednesday | 83°F | Sunny | 2 to 7 mph NNW | 0% |
| Wednesday Night | 50°F | Partly Cloudy | 1 to 7 mph NNE | 0% |
| Thursday | 81°F | Mostly Sunny | 2 to 7 mph WSW | 0% |
| Thursday Night | 47°F | Partly Cloudy | 1 to 7 mph NNW | 3% |
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 Sep 19, 2026.