Grow cannabis in Paramount, CA
Paramount's winter brings damp, not cold. January air outside averaged 77 percent humidity in 2024, the highest of the months shown, while December and January nights hold near 47°F and frost almost never comes.
That makes winter the easy season for heat and the tricky one for moisture. In a garage tent, what dries the air once the lamp clicks off?
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 the tent sits decides how much January's number matters. Inside a heated house, warmed air runs dry and the outdoor reading means little. A garage or an unheated back room is different: it follows the damp outdoor air. Run the lamp overnight, and set a small dehumidifier there to run through the afternoon dark period. That dehumidifier is the main winter tool.
Overnight lights let the lamp follow the cold: their warmth lands in the coolest hours, and the dark period falls in the 67°F afternoons. The Long Beach Daugherty Field station, 5.4 miles away, averages 0.1 freezing nights a year, and the average night stays at 45°F or warmer every month. So a warming mat for seedlings is about all the extra heat winter asks.
Summer brings a different trade. Highs run from about 76°F in June to 83°F in August, and the station averages about 23 days at 90°F or hotter in a year, with August and September carrying about 6 each. On those days an air conditioner cools a garage and pulls water out while it runs. On the mild nights in between it sits idle, and outdoor humidity held at 67 to 69 percent from June through October, so the dehumidifier stays in the plan through flower.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 67 | 67 | 69 | 71 | 73 | 76 | 81 | 83 | 82 | 78 | 73 | 67 |
| Avg low °F | 47 | 48 | 51 | 54 | 58 | 61 | 65 | 66 | 64 | 59 | 52 | 47 |
| Humidity % | 77 | 68 | 67 | 67 | 67 | 69 |
Highs and lows: NOAA 1991 to 2020 normals, Long Beach Daugherty Fld station (5.4 miles away). Humidity: Open-Meteo historical model data, average daily humidity in 2024, for the months shown. Planning averages, not a forecast.
State law caps a private residence at 6 living plants, no matter how many adults live in it, grown inside a locked space with no view of them from public places. Paramount can set reasonable rules for indoor grows, short of a ban, and may ban outdoor grows altogether, so read the city's rules first.
Where outdoor plants are allowed, start photoperiod seeds (the kind that flower when nights lengthen) indoors March 4 to 18. Set them out from April 15; autoflower seeds go in about a week before transplanting. With nights averaging 50°F or warmer from March 3 to November 25, cold does not end the season. Damp does the damage: October averaged 69 percent in 2024, while photoperiod buds ripen, so pick mold-resistant varieties, thin the inner branches, and look deep into the biggest buds after a windless morning.
| Frost | Rare: less than 1 freezing night a year on average |
|---|---|
| Nights stay 50°F or warmer | Mar 3 to Nov 25 |
| Start seeds or clones indoors | Mar 4 to Mar 18 |
| Move plants outdoors | Apr 15 or later |
Paramount is a dense, mostly residential city, and the Paramount Swap Meet and the civic center near Colorado Avenue are where neighbors cross paths. In a dense city, a dehumidifier humming in a garage at 2 a.m. or the smell of a late-flower plant can carry next door. A carbon filter and a locked door handle that; encryption does not.
Canna GLAP locks the grow journal with encryption on your phone, then syncs it. Break into our servers and you would find grow records reduced to noise, with no key in sight. The dehumidifier setting that saved a January run is nobody's business but yours.
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.
Almost never. The Long Beach Daugherty Field station, 5.4 miles away, averages 0.1 freezing nights a year, and the average night stays at 45°F or warmer every month.
In a garage or unheated room, usually yes, because that space tracks the damp outdoor air. In a heated room, the heat dries the air and you may not.
From April 15, if local law allows outdoor plants, after starting photoperiod seeds indoors March 4 to 18. Keep the plants, 6 at most, locked up and hidden from public view.
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