Hayfork, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hayfork, a community in Trinity County, California.
Today
50°F
Light Rain Likely
Rain likely before 4pm. Cloudy. High near 50, with temperatures falling to around 46 in the afternoon. East wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Hayfork
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 50°F | Light Rain Likely | 8 mph E | 68% |
| Tonight | 29°F | Widespread Frost | 2 to 7 mph ENE | 7% |
| Wednesday | 61°F | Widespread Frost then Partly Sunny | 1 to 5 mph WSW | 2% |
| Wednesday Night | 32°F | Widespread Frost | 0 to 5 mph WNW | 2% |
| Thursday | 65°F | Widespread Frost then Sunny | 1 mph NW | 0% |
| Thursday Night | 32°F | Partly Cloudy then Widespread Frost | 1 mph NW | 0% |
| Friday | 70°F | Widespread Frost then Mostly Sunny | 2 mph NNW | 0% |
| Friday Night | 35°F | Mostly Clear then Areas Of Frost | 0 mph | 0% |
| Saturday | 75°F | Areas Of Frost then Sunny | 1 mph SSE | 0% |
| Saturday Night | 34°F | Partly Cloudy then Areas Of Frost | 0 mph | 2% |
| Sunday | 69°F | Areas Of Frost then Mostly Sunny | 0 mph | 3% |
| Sunday Night | 34°F | Mostly Cloudy then Areas Of Frost | 0 mph | 3% |
| Monday | 65°F | Areas Of Frost then Partly Sunny | 0 mph | 6% |
| Monday Night | 32°F | Partly Cloudy then Areas Of Fog | 0 mph | 20% |
Forecast source: National Weather Service (api.weather.gov) for Hayfork (40.576, -123.124). Updated through the day.
Growing snapshot for Hayfork
Last spring frost
Apr 16
First fall frost
Oct 31
Growing season
197 days
Hardiness zone
8b
More local growing data for Hayfork: nearby ZIP 96041 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Burnt Ranch
Coffee Creek
Douglas City
Hyampom
Junction City
Lewiston
Mad River
Platina
Post Mountain
Ruth
Salyer
Trinity Center
Trinity Village
Weaverville
Climate data from the nearest NOAA station, Big Bar 4 E, Ca (15.7 mi from Hayfork). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.