CannaGLAP
Grow cannabis in Baldwin Park, CA
Growing cannabis in Baldwin Park: summer nights that stay warm, and winters that barely arrive
Baldwin Park's summer keeps working after dark. August afternoons average about 88°F, but the night only falls to about 66°F, and September nights hold near 64. A gap of about 22 degrees is not enough for night air to do much of a tent's cooling.
The same warmth runs through winter, when the average night stays at 45°F or warmer. So if neither season sends real cold, what does your grow room actually have to be built around?
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.
Cooling a Baldwin Park tent when the night will not help
Flipping the lights to run overnight still pays: the lamp's heat lands in the coolest hours and the plants stay dark through the worst of the afternoon. But intake air near 65°F in July and August takes off only a little heat. A tent in a converted garage or a bedroom near Morgan Park will often need an air conditioner, not just a bigger fan, from July into October.
The heat comes late and lingers. The San Gabriel fire station, 8 miles away at 363 feet, counts about 64 afternoons a year that reach 90°F: about 17 in August, 14 in September and 7 in October. That puts the hottest stretch over the weeks an outdoor plant ripens.
Warm nights shape the finish, too. Many strains color up and hold more aroma when late-flower nights run well below the days, and a September low near 64°F offers little of that. Indoors, a drop of about 10 degrees at lights off is something you set with the air conditioner rather than wait for.
Winter needs little gear. December lows average about 45°F, January about 46, and the station records about 1 freezing night a year. Past a seedling mat on the coldest nights, a garage grow can run as it is, and January's 68 percent outdoor reading fades inside a heated home.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 69 | 68 | 71 | 74 | 76 | 81 | 86 | 88 | 87 | 81 | 74 | 68 |
| Avg low °F | 46 | 47 | 51 | 53 | 58 | 62 | 65 | 66 | 64 | 57 | 51 | 45 |
| Humidity % | 68 | 66 | 58 | 54 | 59 | 50 |
Highs and lows: NOAA 1991 to 2020 normals, San Gabriel Fire Dept. station (8 miles away). Humidity: Open-Meteo historical model data, average daily humidity in 2024, for the months shown. Planning averages, not a forecast.
Baldwin Park outdoors, with no frost to race
California caps a private residence at 6 living plants, however many adults share it, kept in a locked space not visible from a public place. Cities and counties can set reasonable rules for indoor grows without banning them, and they may ban outdoor grows outright. Check Baldwin Park's own rules first.
Where outdoor plants are allowed, get seeds going inside from March 4 through March 18 and set them out from April 15; nights already average 50°F or more from March 11 to November 19. Frost almost never ends the season here, so the plant and the heat set the calendar. Photoperiod plants flower as the days shorten, which carries them into the August and September heat, so shade them in the afternoon and water early. October's air was the driest of the months measured, 50 percent in 2024, which is kind to ripe buds.
| Frost | Rare: about 1.2 freezing nights a year |
|---|---|
| Nights stay 50°F or warmer | Mar 11 to Nov 19 |
| Start seeds or clones indoors | Mar 4 to Mar 18 |
| Move plants outdoors | Apr 15 or later |
Baldwin Park grow notes that stay put
Baldwin Park's calendar keeps neighbors in each other's company: the Street Market in the Park, Art in the Park, gatherings at Morgan Park and the Susan Rubio Zocalo Park. The house next door can hear a fan or catch the smell of late flower, and no app changes that. Encryption covers something else, which is your records.
Canna GLAP encrypts the grow journal on your phone before it uploads. If our servers were ever broken into, the intruder would find grow entries in scrambled form, with no key to read them. The cooling schedule that finally held your September tent at temperature belongs to you alone.
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 Baldwin Park ask
Does Baldwin Park get cold enough to hurt cannabis plants?
Rarely. The San Gabriel station, 8 miles away, records about 1 freezing night a year, and average nights stay at 45°F or warmer all year.
Why does my tent stay hot at night in Baldwin Park?
Summer nights are warm: July and August lows average about 65 to 66°F, so outside air cools a tent only a little. An air conditioner does more than intake air alone.
When can I plant cannabis outside in Baldwin Park?
From April 15, with seeds started inside in the first half of March, if your local rules allow outdoor plants. Keep them locked up and out of sight from public places, 6 living plants per residence at most.
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