Lewiston, CA Weather & Growing Conditions
Tonight
39°F
Patchy Fog
Patchy fog after 10pm. Partly cloudy, with a low around 39. East northeast wind around 2 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 39°F | Patchy Fog | 2 mph ENE | 5% |
| Wednesday | 58°F | Patchy Fog then Partly Sunny | 1 to 5 mph WNW | 0% |
| Wednesday Night | 38°F | Partly Cloudy | 1 to 5 mph SSW | 0% |
| Thursday | 64°F | Sunny | 0 to 3 mph NNE | 0% |
| Thursday Night | 42°F | Mostly Clear | 2 mph N | 0% |
| Friday | 69°F | Mostly Sunny | 2 mph NNW | 0% |
| Friday Night | 46°F | Mostly Clear | 1 mph NNW | 0% |
| Saturday | 69°F | Sunny | 3 mph ENE | 0% |
| Saturday Night | 43°F | Partly Cloudy | 2 mph NNW | 0% |
| Sunday | 64°F | Mostly Sunny | 2 mph WNW | 1% |
| Sunday Night | 43°F | Mostly Cloudy | 1 mph NNW | 3% |
| Monday | 63°F | Partly Sunny | 2 mph N | 6% |
| Monday Night | 42°F | Partly Cloudy | 1 mph NNW | 13% |
| Tuesday | 63°F | Slight Chance Light Rain | 2 mph ESE | 21% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lewiston, CA
Last spring frost
Apr 23
First fall frost
Oct 22
Growing season
178 days
Hardiness zone
8b
Explore more for Lewiston, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Trinity Rvr Hatchery, Ca (3.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.