Tennant, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Tennant, a community in Siskiyou County, California.
This Afternoon
72°F
Sunny
Sunny, with a high near 72. North northwest wind around 9 mph.
7-day forecast for Tennant
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Sunny | 9 mph NNW | 0% |
| Tonight | 41°F | Clear | 2 to 10 mph WSW | 0% |
| Saturday | 78°F | Sunny | 0 to 6 mph NE | 0% |
| Saturday Night | 45°F | Mostly Clear | 2 to 6 mph SW | 0% |
| Sunday | 81°F | Mostly Sunny | 1 to 5 mph E | 0% |
| Sunday Night | 49°F | Partly Cloudy | 0 to 5 mph NNW | 0% |
| Monday | 81°F | Sunny | 2 mph NNW | 0% |
| Monday Night | 48°F | Mostly Clear | 2 mph NW | 0% |
| Tuesday | 81°F | Sunny | 0 to 3 mph NNW | 0% |
| Tuesday Night | 45°F | Mostly Clear | 3 mph NNW | 0% |
| Wednesday | 81°F | Sunny | 2 mph S | 1% |
| Wednesday Night | 47°F | Mostly Clear | 0 to 3 mph SSW | 0% |
| Thursday | 81°F | Sunny | 2 to 8 mph S | 1% |
| Thursday Night | 46°F | Partly Cloudy | 6 mph S | 1% |
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
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Lake Shastina
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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 Sep 19, 2026.