Planting zone for 96006 — Adin, CA
ZIP code 96006 (Adin, Modoc County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is May 28 and the first fall frost September 29.
Where ZIP 96006 is
Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoomNot the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.
Was 6b on the 2012 map — half a zone warmer now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 7a means →
Frost forecast — next 7 nights
live from the National Weather ServiceLoading the forecast for Adin, CA…
Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.
Frost dates in Adin, CA
A hard freeze (28 °F) usually ends around May 2 and returns around October 13.
From the NOAA station Adin Rs, CA — 7 miles away, elevation 4,196 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.
When to plant vegetables in 96006
Counted from the median last spring frost (May 28) and first fall frost (Sep 29) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.
When spring arrived in 2026
In 2026, spring leaf-out near 96006 came on Mar 6 — 33 days earlier than the 1991–2020 average (Apr 8).
Apr 82026
Mar 6
The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).
Soil in Adin, CA
The soil mapped at the center of ZIP 96006 is Lonkey — cobbly sandy loam, well drained.
Map unit: Lonkey-Malinda complex, 15 to 30 percent slopes.
Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 96006; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.
Climate in Adin, CA
Average high and low, by month
Precipitation by month inches · ❄ = snowfall
NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Adin Rs, CA (7 mi away); precipitation: Adin Rs, CA (7 mi away). Daylight is calculated from latitude.
Nearby ZIP codes
3 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.
Questions about 96006
What planting zone is ZIP code 96006?
ZIP code 96006 (Adin, CA) is in USDA hardiness zone 7a on the 2023 map: the coldest night of an average winter reaches 0 to 5 °F (−17.8 to −15 °C).
When is the last frost in Adin, CA?
The median last spring frost (32 °F) near 96006 is May 28; after June 16 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Adin Rs station.
When is the first frost in Adin, CA?
The median first fall frost near 96006 is September 29, giving a median frost-free growing season of 125 days.
When should I plant tomatoes in 96006?
Start tomato seeds indoors around Apr 2 – Apr 16 and set transplants outside around Jun 4 – Jun 18, one to three weeks after the median last frost.
How much rain and snow does 96006 get?
About 15 inches of precipitation a year and 45 inches of snowfall (NOAA 1991–2020 normals, Adin Rs station).
How hot do summers get in Adin, CA?
The average high peaks at 89 °F in July, with about 25 days a year at 90 °F or more.
What kind of soil does 96006 have?
The USDA soil survey maps Lonkey at the center of ZIP 96006: cobbly sandy loam, well drained, pH about 7.0 (neutral).
Did spring come early in Adin, CA in 2026?
Spring leaf-out near 96006 came on Mar 6 in 2026, 33 days earlier than the 1991–2020 average (Apr 8), according to the USA National Phenology Network Spring Index.
What kind of onions grow in Adin, CA?
Long-day onions: the longest day near 96006 is 15 h 08 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).
Did the zone for 96006 change?
Yes. The 2012 USDA map put 96006 in zone 6b; the 2023 map puts it in zone 7a. The newer map uses 1991–2020 data and more weather stations.