CannaGLAP
Grow cannabis in Lake Elsinore, CA
Growing cannabis in Lake Elsinore: one garage, two extremes
A garage grow in Lake Elsinore meets both ends of the thermometer. August averages a 98°F high, with about 29 afternoons at 90°F or hotter. Four months later, December lows average about 40°F, and a typical year brings about 9 freezing nights.
A room set up for August can chill a plant in December, and one set up for December can cook it in August. Which season was your setup planned for?
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.
A Lake Elsinore grow room in both seasons
Summer comes first, because it lasts. The Elsinore station, 1.6 miles away and 1,268 feet up, averages about 123 days of 90°F or more in a year, and the run holds from June through September: about 18, 28, 29 and 23 days a month. A tent in a garage near Historic Downtown or a house close to the lake needs real cooling then, a window air conditioner or a vented, shaded space, not only a bigger fan.
The relief comes after dark, with August lows near 65°F, so lamps that run from evening to morning keep the hottest hours dark. Dry air is the other summer cost: humidity averaged 38 percent in July 2024 and 41 in August, so pots dry fast, and seedlings in a warm, vented tent may want a small humidifier.
Winter turns the same garage cold. From December through February, lows average about 40 to 43°F, and a frost after February 27 comes in only about one year in ten. Lift pots off the concrete, give seedlings a heat mat, and run the lamps through the coldest hours of the night. Heat the root zone, not the whole garage.
January was also the dampest of the months measured, at 70 percent. Cold air holds little water, though, and a heated room dries it further. Only an unheated garage that stays damp needs a dehumidifier in winter.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 66 | 67 | 72 | 77 | 82 | 90 | 97 | 98 | 93 | 83 | 73 | 65 |
| Avg low °F | 42 | 43 | 46 | 49 | 54 | 58 | 64 | 65 | 61 | 54 | 46 | 40 |
| Humidity % | 70 | 48 | 38 | 41 | 46 | 42 |
Highs and lows: NOAA 1991 to 2020 normals, Elsinore station (1.6 miles away). Humidity: Open-Meteo historical model data, average daily humidity in 2024, for the months shown. Planning averages, not a forecast.
Outdoors in Riverside County
California sets a ceiling of 6 living plants on each private residence, regardless of how many adults live there, grown in a locked space not visible from a public place. Cities and counties can set reasonable rules for indoor grows but cannot ban them, and they may ban outdoor grows, so check Lake Elsinore's rules first.
Where outdoor plants are allowed, start seeds indoors March 4 to March 18 and set them out from April 15. That leaves about 230 days before the early first frost on December 1, plenty for a photoperiod plant. Heat is the hard part: September still averages about 23 afternoons at 90°F and October about 11, so give plants afternoon shade and deep containers, and water early in the day. The fall air works for you, averaging about 44 percent across September and October, which leaves bud rot little to work with.
| Last spring frost | Jan 28 in a typical year, Feb 27 to be safe (later only 1 year in 10) |
|---|---|
| First fall frost | Dec 18 typical, as early as Dec 1 (1 year in 10) |
| Frost-free season | about 329 days |
| Nights stay 50°F or warmer | Apr 23 to Oct 31 |
| Start seeds or clones indoors | Mar 4 to Mar 18 |
| Move plants outdoors | Apr 15 or later |
Keeping a Lake Elsinore grow quiet
Lake Elsinore has grown quickly, and new housing developments keep bringing new neighbors. Crowds gather at the lakefront around Launch Pointe, at the summer car cruises downtown and at Storm games at Lake Elsinore Diamond. A garage air conditioner running every August night is easy to hear from next door. Your grow records do not have to be that easy to find.
The grow journal is encrypted by Canna GLAP while it is still on your phone, before upload. If someone broke into our servers, they would find grow records turned to noise, with no key to make sense of them. That protects the journal, not the sound of a fan or a smell on the breeze. The cooling and heating settings that carried a plant through both seasons stay 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.
Questions growers in Lake Elsinore ask
Does it freeze in Lake Elsinore?
Sometimes. The Elsinore station averages about 9 freezing nights a year, mostly from December through February, and the last frost typically comes around January 28.
How do I keep a grow tent cool in a Lake Elsinore summer?
Run the lights from evening to morning, when August lows average about 65°F, and cool the room itself from June through September. In an average year the station logs about 123 days that reach 90°F.
When can I plant cannabis outside in Lake Elsinore?
From April 15, after starting seeds March 4 to March 18, if local law allows outdoor plants. Plan for about 230 days before the early first frost of December 1.
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