Lewiston, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lewiston, a community in Trinity County, California.
This Afternoon
84°F
Sunny
Sunny, with a high near 84. West wind 1 to 7 mph.
7-day forecast for Lewiston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 84°F | Sunny | 1 to 7 mph W | 0% |
| Tonight | 49°F | Clear | 1 to 7 mph WSW | 0% |
| Saturday | 88°F | Sunny | 1 mph WNW | 0% |
| Saturday Night | 51°F | Mostly Clear | 2 mph WNW | 0% |
| Sunday | 91°F | Mostly Sunny | 1 to 5 mph NE | 0% |
| Sunday Night | 53°F | Mostly Clear | 0 to 5 mph W | 0% |
| Monday | 92°F | Sunny | 2 mph SSW | 0% |
| Monday Night | 53°F | Mostly Clear | 2 mph W | 0% |
| Tuesday | 92°F | Sunny | 0 to 3 mph W | 0% |
| Tuesday Night | 51°F | Mostly Clear | 0 to 3 mph WNW | 0% |
| Wednesday | 89°F | Sunny | 0 to 3 mph ESE | 0% |
| Wednesday Night | 52°F | Partly Cloudy | 2 mph SW | 0% |
| Thursday | 86°F | Mostly Sunny | 0 to 5 mph S | 1% |
| Thursday Night | 50°F | Partly Cloudy | 0 to 3 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Lewiston (40.697, -122.823). Updated through the day.
Growing snapshot for Lewiston
Last spring frost
Apr 23
First fall frost
Oct 22
Growing season
178 days
Hardiness zone
8b
More local growing data for Lewiston: nearby ZIP 96052 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Burnt Ranch
Coffee Creek
Douglas City
Hayfork
Hyampom
Junction City
Mad River
Platina
Post Mountain
Ruth
Salyer
Trinity Center
Trinity Village
Weaverville
Climate data from the nearest NOAA station, Trinity Rvr Hatchery, Ca (3.1 mi from Lewiston). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.