CannaGLAP
Grow cannabis in Carson, CA
Growing cannabis in Carson: mild weather, and damp air just as buds ripen
Carson rarely freezes and rarely tops 90°F. The hard part is moisture: outdoor air averaged 72 to 75 percent from June through October 2024, right as buds ripen. The Torrance airport station, 4 miles away, counts only about 6 afternoons at 90°F and 0.6 freezing nights in a year.
Weather that mild makes it easy to forget the air itself. Is your flower tent set up to pull water out at lights-off, or only to stay warm?
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.
Where a Carson grow needs warmth, and where it needs dry air
Seedlings feel the cool spring nights most. March averages a 68°F high and a 50°F low at the station, and the average night does not reach 50°F until about March 19, just after the March 4 to 18 seed window. Young roots slow down in cool soil, and an unheated garage off Avalon Boulevard or a back room near Dominguez Park follows the night air down. Put a heat mat under the trays, a humidity dome over them for the first week, and run the lights through the night until April, so the lamp's warmth lands in the coldest hours instead of the mildest ones.
December and January run cooler still, with lows near 46 to 47°F, though freezing nights stay rare. Inside a heated house that barely registers, and furnace air dries out, so cuttings may want extra humidity. A garage is another story. January's 80 percent outdoor reading, the highest among the months measured, can bead on cold tent walls overnight, so a winter garage grow wants a small heater and a dehumidifier both.
August, the warmest month, averages a 78°F high, and the year brings only about 6 afternoons at 90°F, about half of them in September and October. A flower tent can keep its lights on by day for most of the year and shift to a night schedule for those few fall spells.
Moisture is the steady job in flower. Outdoor air averaged 72 to 73 percent from June through September 2024 and 75 in October, wetter than ripening buds like. Run a dehumidifier and a canopy fan from mid flower on, and leave both running at lights-off, when the tent cools toward October nights near 57°F.
Heater safety: use one with tip-over and overheat shutoff, plug it straight into a wall outlet (not an extension cord or power strip), and keep it a few feet from tent fabric and plants.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 67 | 66 | 68 | 70 | 72 | 74 | 77 | 78 | 78 | 76 | 71 | 66 |
| Avg low °F | 47 | 48 | 50 | 52 | 55 | 59 | 62 | 62 | 61 | 57 | 51 | 46 |
| Humidity % | 80 | 73 | 73 | 73 | 72 | 75 |
Highs and lows: NOAA 1991 to 2020 normals, Torrance Airport station (4 miles away). Humidity: Open-Meteo historical model data, average daily humidity in 2024, for the months shown. Planning averages, not a forecast.
Planting out in Carson
California allows 6 living plants per private residence, however many adults live there, in a locked space hidden from any public place. Carson can set rules for home grows and may ban outdoor ones, so read the city's code before planting outside.
Where it is allowed, plant out from April 15, into April nights that average about 52°F. April averages 0.1 freezing nights at the station, so a cold snap after planting is rare but possible: harden plants off over a week first. The finish is the harder part, since buds ripening in September and October sit in air near 72 to 75 percent. Pick airy, mold-resistant varieties.
| Frost | Rare: less than 1 freezing night a year on average |
|---|---|
| Nights stay 50°F or warmer | Mar 19 to Nov 20 |
| Start seeds or clones indoors | Mar 4 to Mar 18 |
| Move plants outdoors | Apr 15 or later |
Grow talk in Carson, and what only your passphrase opens
Carson gathers in its parks for festivals like the Samoan Heritage Festival and the Mariachi Fiesta, and at Dignity Health Sports Park for LA Galaxy match days. You may swap grow stories with a neighbor at Anderson Park. What you share out loud is your call. Your written records are a separate matter.
Canna GLAP encrypts the grow journal on your phone before upload. If our servers were ever broken into, the intruder would get grow records they could not read and no key to change that. The encryption covers the journal, not the plants: a locked space and a carbon filter still do the work of keeping a grow quiet.
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 Carson ask
When should I start cannabis seeds in Carson?
March 4 to 18, under lights and on a heat mat, since the average night stays under 50°F until about March 19. Plants can go outside from April 15 where outdoor plants are allowed.
Does Carson ever get frost?
Rarely. The Torrance airport station averages 0.6 freezing nights a year, mostly from December to February, and December and January nights average about 46 to 47°F.
How damp is Carson air while buds ripen?
In 2024, outdoor humidity averaged 72 percent in September and 75 in October. A dehumidifier and steady airflow help buds finish clean.
Growing near Carson
- Grow cannabis in Torrance, CA 3 miles
- Grow cannabis in Gardena, CA 4 miles
- Grow cannabis in Lawndale, CA 6 miles
- Grow cannabis in Compton, CA 6 miles
- Grow cannabis in Willowbrook, CA 6 miles
All California cities · Every state where adults may grow at home