CannaGLAP
Grow cannabis in Compton, CA
Growing cannabis in Compton: why a September finish beats an October one
Compton has a long habit of growing things. Horse-keeping and small urban farms still hold on in some of its lots, and the weather rarely gets in their way: the Hawthorne Municipal Airport station, 6.8 miles away, records no freezing nights in an average year.
The trouble arrives late, and it peaks in October. That month averages about 3 afternoons at 90°F, more than any other, and humidity rose to 75 percent in October 2024 after 72 in September. If one month is harder on ripe buds than the month before it, why let a plant finish in the harder one?
Adults 21 and over: yes. Plant limit: 6 living plants per private residence, however many adults live there.
Locked space, not visible from a public place; cities and counties can set reasonable rules for indoor grows (but cannot ban them) and may ban outdoor grows; a landlord may prohibit growing on a rental. Source: Department of Cannabis Control; conditions: Prop 64 text as passed in 2016 (H&S Code 11362.2 and 11362.45). Local rules (landlords, HOAs, city codes) can add more; this is a summary, not legal advice.
Timing a Compton flower run
The station averages about 9 afternoons a year at 90°F, and roughly two thirds of them fall from September through November, while June, July and August together see only about 1.5. Set up indoor runs so the last weeks of flower land in September, or in the cooler months after the fall heat, rather than in the middle of October. When a run has to ripen in October anyway, keep a portable air conditioner on hand and move the light period to night hours for those weeks.
Moisture is the other half of the October problem, and it never fully leaves. Outdoor air averaged 72 to 75 percent from June through October 2024, damper than late flower wants. A garage tent breathing that air needs a dehumidifier from the first weeks of bloom, not just the final ones. Night air is little help: August and September nights average about 65°F, so what the intake pulls in after dark is mild and still wet.
Winter is the easy stretch. December and January nights average about 49°F, and nights hold at 50°F or warmer from February 2 to December 8. Lamp heat and a seedling mat for fresh cuttings cover it. January's 80 percent outdoor reading, the highest among the months measured, mostly fades inside a heated house; an unheated, damp garage is where it can show up, as dew on the tent walls by morning.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 67 | 67 | 68 | 70 | 71 | 73 | 77 | 79 | 79 | 76 | 72 | 66 |
| Avg low °F | 49 | 51 | 53 | 55 | 58 | 62 | 65 | 65 | 65 | 60 | 54 | 49 |
| Humidity % | 80 | 73 | 73 | 73 | 72 | 75 |
Highs and lows: NOAA 1991 to 2020 normals, Hawthorne Muni Airport station (6.8 miles away). Humidity: Open-Meteo historical model data, average daily humidity in 2024, for the months shown. Planning averages, not a forecast.
Outdoors on a Compton lot
California allows 6 living plants per private residence, however many adults live there, kept in a locked space that cannot be seen from a public place. Cities and counties can regulate home grows and may ban outdoor ones, so read Compton's current rules before planning a yard plant.
Where outdoor plants are allowed, start seeds March 4 to 18 and plant out from April 15. Frost sets no deadline here; day length does, since cannabis flowers as the nights get longer. Choose varieties bred to finish in September, ahead of October's heat and damp, and shade them on a 90-degree afternoon.
| Frost | None in a typical year |
|---|---|
| Nights stay 50°F or warmer | Feb 2 to Dec 8 |
| Start seeds or clones indoors | Mar 4 to Mar 18 |
| Move plants outdoors | Apr 15 or later |
A Compton grow log that keeps to itself
Your notes say more than they seem to, because each line records a fix you had to find yourself. A roommate, a landlord or a grower friend from nearby Long Beach or Lynwood could learn a lot from reading them.
Canna GLAP encrypts those grow records on your phone before anything uploads. A thief who got into our servers would leave holding grow data in scrambled form, with nothing to unlock it. The encryption guards the journal and only the journal: it does nothing about what a neighbor smells over the fence, so keep the plants themselves discreet too.
What is encrypted: your plants, notes, photos, feed logs and harvests. What is not: account details (such as your email, name and plan), a grow name or town if you type one, your team, and your sensors' names. The full list: what a hacker would get.
Questions growers in Compton ask
Does it ever freeze in Compton?
Almost never. The Hawthorne Municipal Airport station records no freezing nights in an average year, and December and January nights average about 49°F.
When should a cannabis plant finish in Compton?
September, if you can manage it. October averages about 3 days at 90°F, the most of any month, and its humidity reached 75 percent in 2024, against 72 in September.
Do I need a dehumidifier to grow in Compton?
For flowering, yes. Outdoor humidity averaged 72 to 75 percent from June through October 2024, and a tent that draws on that air will struggle to get drier without help.
Growing near Compton
- Grow cannabis in Lynwood, CA 2 miles
- Grow cannabis in Willowbrook, CA 3 miles
- Grow cannabis in Paramount, CA 3 miles
- Grow cannabis in South Gate, CA 4 miles
- Grow cannabis in Gardena, CA 5 miles
All California cities · Every state where adults may grow at home