Herlong, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Herlong, a community in Lassen County, California.
Tonight
49°F
Mostly Clear
Mostly clear, with a low around 49. West wind 0 to 10 mph, with gusts as high as 20 mph.
7-day forecast for Herlong
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Mostly Clear | 0 to 10 mph W | 1% |
| Saturday | 81°F | Sunny | 0 to 5 mph SE | 0% |
| Saturday Night | 50°F | Partly Cloudy | 0 to 5 mph SE | 0% |
| Sunday | 83°F | Partly Sunny | 0 to 10 mph NE | 0% |
| Sunday Night | 54°F | Mostly Cloudy | 0 to 5 mph NW | 0% |
| Monday | 86°F | Mostly Sunny | 0 to 5 mph N | 0% |
| Monday Night | 54°F | Partly Cloudy | 0 to 5 mph W | 0% |
| Tuesday | 87°F | Sunny | 0 to 5 mph N | 1% |
| Tuesday Night | 54°F | Mostly Clear | 0 to 5 mph W | 1% |
| Wednesday | 89°F | Sunny | 0 to 10 mph N | 0% |
| Wednesday Night | 53°F | Mostly Clear | 0 to 10 mph W | 0% |
| Thursday | 89°F | Sunny | 5 to 10 mph SW | 0% |
| Thursday Night | 53°F | Partly Cloudy | 5 to 10 mph SW | 0% |
| Friday | 86°F | Mostly Sunny | 5 to 15 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Herlong (40.142, -120.140). Updated through the day.
Growing snapshot for Herlong
Last spring frost
May 21
First fall frost
Oct 1
Growing season
130 days
Hardiness zone
7a
More local growing data for Herlong: nearby ZIP 96113 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Adin
Bieber
Doyle
Janesville
Johnstonville
Litchfield
Little Valley
Madeline
Milford
Nubieber
Patton Village
Spaulding
Stones Landing
Susanville
Climate data from the nearest NOAA station, Doyle 4 Sse, Ca (15.3 mi from Herlong). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.