CannaGLAP

Grow cannabis in Beavercreek, OH

Growing cannabis in Beavercreek: from 90-degree September days to an October frost

September in Beavercreek still behaves like summer. The Dayton station, 7.8 miles away, averages about 79°F that month, with about 4 days reaching 90°F and nights around 56°F.

Then the season turns quickly. October afternoons average about 66°F, nights about 44°F, and in an early year the first frost has come by October 13. A plant still flowering when that turn arrives is the one that gets caught. Will yours be done?

Ohio home grow rules (as of October 2026)

Adults 21 and over: yes. Plant limit: 6 per adult; 12 per residence.

Primary residence only (since March 20, 2026); secured enclosed area not visible from a public space; not where a rental agreement prohibits it. Source: ORC 3796.04. Local rules (landlords, HOAs, city codes) can add more; this is a summary, not legal advice.

A Greene County tent through the turn of the seasons

Indoors, that turn shows up as a moving target. In September a tent in an upstairs room can still run hot by afternoon, so keep the lights on overnight until the 90°F days stop. A few weeks later, October nights near 44°F start pulling heat out of a garage or a cool basement once the lamp shuts off. In those weeks, watch the low reading as closely as the high.

Summer is the heavier load. July averages about 87°F with about 13 days of 90°F heat, and nights hold near 66°F, so the dark hours give back less than you would hope. Vent hot tent air outdoors rather than into the room, add air conditioning for the worst weeks, and keep the light period at night from June through August.

Humidity sits in the middle. July and August average about 70 percent, September about 64 and October about 65. A fall flower room stays just below the 70 percent level that invites bud rot, but only just, so a small dehumidifier and a fan through the canopy are cheap insurance.

Winter is long. January lows average about 20°F with about 25 freezing nights, and the year brings about 107. Give seedlings a heat mat, keep pots off cold floors, and time the light for the coldest hours.

MonthJanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F364051647584878679665241
Avg low °F202331415362666456443326
Humidity %746470706465

Highs and lows: NOAA 1991 to 2020 normals, Dayton Mcd station (7.8 miles away). Humidity: Open-Meteo historical model data, average daily humidity in 2024, for the months shown. Planning averages, not a forecast.

Beavercreek outdoors: finish before mid-October

Ohio sets the limit at 6 plants for each adult, 12 for a residence, grown solely at your primary residence and never where a rental agreement prohibits it. Every plant has to stay in a secured, enclosed area that cannot be seen from a public space, so an outdoor grow needs a locked greenhouse or a similar enclosure that meets each rule.

Start seeds March 24 to April 7 and plant out May 5 or later. Frost typically ends around April 18, May 5 clears nearly all the late ones, and the average night has been at 45°F since April 25. From May 5 to the early first frost on October 13 is about 161 days; in a typical fall, frost waits until October 25. Choose autoflowers or photoperiods that finish by early October, and treat any harvest planned after October 13 as a gamble.

Last spring frostApr 18 in a typical year, May 5 to be safe (later only 1 year in 10)
First fall frostOct 25 typical, as early as Oct 13 (1 year in 10)
Frost-free seasonabout 189 days
Nights stay 50°F or warmerMay 8 to Sep 30
Start seeds or clones indoorsMar 24 to Apr 7
Move plants outdoorsMay 5 or later

Suburban neighbors, a log kept closed

Beavercreek runs on shared calendars: a show in the Beavercreek Summer Entertainment Series, a day at the Yellow Springs Street Fair in nearby Yellow Springs, a trip to the 2nd Street Market in nearby Dayton. Ohio's rental rule brings the landlord into it too. A neighbor, a landlord or a grower friend may wonder how you beat the October frost.

Inside Canna GLAP, your grow history is encrypted on your phone before upload. Anyone breaking into our servers would leave with unreadable grow records and no key. The harvest date that beat an early frost is yours to share or keep.

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 Beavercreek ask

When should I plant cannabis outside in Beavercreek?

May 5 or later, with seeds started March 24 to April 7. Aim to harvest before October 13, when frost can arrive in an early fall.

How late can I harvest outdoor cannabis in Beavercreek?

October 13 is the safe target, since that is when frost arrives in an early year. In a typical fall frost holds off until about October 25, but nights average under 45°F after October 12.

Does my Beavercreek flower tent need a dehumidifier?

It helps. September and October average about 64 and 65 percent humidity, just under the level where bud rot takes off, and July and August about 70. A small unit and steady airflow keep a margin.

Growing near Beavercreek

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