Tennant, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Tennant, a community in Siskiyou County, California.
Today
48°F
Light Rain Likely
Rain likely before 4pm. Mostly cloudy. High near 48, with temperatures falling to around 42 in the afternoon. South wind 1 to 12 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
7-day forecast for Tennant
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 48°F | Light Rain Likely | 1 to 12 mph S | 58% |
| Tonight | 27°F | Mostly Clear | 1 mph S | 3% |
| Wednesday | 54°F | Mostly Sunny | 2 mph N | 5% |
| Wednesday Night | 29°F | Slight Chance Light Rain then Partly Cloudy | 1 mph NW | 16% |
| Thursday | 55°F | Sunny | 2 mph N | 0% |
| Thursday Night | 32°F | Mostly Clear | 1 mph SE | 0% |
| Friday | 63°F | Mostly Sunny | 1 mph NNE | 0% |
| Friday Night | 34°F | Mostly Clear | 0 to 3 mph ENE | 0% |
| Saturday | 66°F | Mostly Sunny | 2 to 6 mph SSE | 0% |
| Saturday Night | 33°F | Partly Cloudy | 3 to 10 mph S | 0% |
| Sunday | 60°F | Partly Sunny | 0 to 5 mph S | 1% |
| Sunday Night | 33°F | Mostly Cloudy | 0 to 3 mph S | 1% |
| Monday | 58°F | Partly Sunny | 1 to 5 mph S | 8% |
| Monday Night | 33°F | Partly Cloudy | 3 mph S | 8% |
Forecast source: National Weather Service (api.weather.gov) for Tennant (41.579, -121.917). Updated through the day.
Growing snapshot for Tennant
Last spring frost
Jun 6
First fall frost
Sep 28
Growing season
113 days
Hardiness zone
6b
More local growing data for Tennant: nearby ZIP 96058 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Carrick
Castella
Dorris
Dunsmuir
Edgewood
Etna
Fort Jones
Gazelle
Greenview
Grenada
Happy Camp
Hornbrook
Lake Shastina
Macdoel
McCloud
Montague
Mount Hebron
Mount Shasta
Weed
Yreka
Climate data from the nearest NOAA station, Lava Beds Nat Mon, Ca (21 mi from Tennant). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.