CannaGLAP
Grow cannabis in Chino, CA
Growing cannabis in Chino: summer heat that stays for the harvest
In Chino, summer does not end with August. The Chino airport station, 4 miles away at 650 feet, averages about 19 days at 90°F or hotter in September and about 9 in October, when the average high is still 85°F. November adds about 3 more.
That matters because fall is when a cannabis plant does its most valuable work. Are your buds ripening in fall weather, or in a summer that never left?
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.
Keeping a Chino tent cool into October
Keep the summer schedule longer than the calendar suggests. Lamps on at night belong in the plan from June through October, not just July and August: the station logs about 11 hot days in June, 23 in July and 25 in August, then the long tail into fall. A garage tent near The Preserve or in the older blocks around D Street takes that heat through the walls all afternoon, so let the lamp rest while it does.
The nights help. August lows average about 63°F and October's about 53°F, so an intake fan on a timer pulls in useful cool air while the lamp runs, and by October the night air does most of the cooling.
The air dries as the heat lingers. Humidity averaged 63 percent in June 2024, 55 in July, 52 in August, 56 in September and 47 in October, the driest of the months measured. A flower tent in a garage open to that air rarely needs heavy dehumidifying. The harvest is another story: in October air, hang it in a closed, cool room so it dries over days, not hours.
Winter afternoons stay mild, near 69 to 70°F from December through February, but nights fall to about 40 to 43°F and the airport averages some 11 freezing nights a year. A garage tent wants a heat mat for seedlings and lamps running through the coldest hours. January's 69 percent outdoor humidity matters mainly in an unheated, damp space.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 70 | 70 | 73 | 77 | 81 | 88 | 94 | 96 | 93 | 85 | 76 | 69 |
| Avg low °F | 42 | 43 | 46 | 49 | 54 | 59 | 63 | 63 | 60 | 53 | 45 | 40 |
| Humidity % | 69 | 63 | 55 | 52 | 56 | 47 |
Highs and lows: NOAA 1991 to 2020 normals, Chino 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.
Outdoors in Chino
Chino homes fall under the state cap of 6 living plants per private residence, however many adults live there, secured with a lock and screened from public view, and cities and counties can regulate and may ban outdoor grows. Check the rules for your Chino address first. Where it is allowed, seeds start indoors during the first half of March (the 4th to the 18th) and plants go out from April 15. Frost after February 22 is about a one-in-ten event.
The season runs long, about 226 days to November 27, the early date for the first fall frost. The tradeoff is heat at ripening: a photoperiod plant usually finishes in September or October, and those two months carry about 28 days at 90°F. Shade cloth for the afternoons, mulch and deep morning watering protect the buds. A variety that finishes in October ripens in cooler, drier air than one done in September: 85°F highs and 47 percent humidity, against 93°F and 56 percent.
| Last spring frost | Jan 17 in a typical year, Feb 22 to be safe (later only 1 year in 10) |
|---|---|
| First fall frost | Dec 19 typical, as early as Nov 27 (1 year in 10) |
| Frost-free season | about 335 days |
| Nights stay 50°F or warmer | Apr 22 to Oct 28 |
| Start seeds or clones indoors | Mar 4 to Mar 18 |
| Move plants outdoors | Apr 15 or later |
Chino grows, Chino privacy
Chino keeps a full calendar of gatherings: CHINO Days, the Kiwanis Concerts on the Lawn, Bark Around Ayala Park. A grower can enjoy every one of them and still keep the harvest numbers out of the small talk.
Canna GLAP encodes your grow journal on the phone before upload. A thief who slipped past our server defenses would find the grow records scrambled and no key stored with them. Encryption stops at the journal, though: it does not mask a garage fan's hum or a skunky breeze on a warm September night.
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 Chino ask
When does the heat end for growing cannabis in Chino?
Later than August. The airport station averages about 19 days at 90°F in September, 9 in October and about 3 in November, so keep tent lights on a night schedule through October.
Does Chino get frost?
Some. The station averages about 11 freezing nights a year, mostly from December through February, so protect young plants in an unheated garage then.
When can I plant cannabis outdoors in Chino?
From April 15, after an indoor start sometime between March 4 and 18, if the local rules for your address allow it. Plants must sit behind a lock and out of public view, 6 living plants per residence at most.
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