Quick answer
Dry weed at 55 to 65% relative humidity and about 60 to 68 °F, in the dark, with gentle air movement that does not blow on the buds. At those settings a hang dry takes roughly 7 to 14 days. Lower humidity dries faster and costs you aroma. Higher humidity invites mold. When small stems snap, move to jars and hold the cure at 62%.
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Drying is where most of a harvest's aroma is kept or lost. The goal is not to get water out as fast as possible. It is to get it out slowly and evenly, so the outside of the bud does not turn crisp while the middle is still wet.
The target numbers
| Setting | Target | Why |
|---|---|---|
| Relative humidity | 55 to 65% | Slow enough to keep aroma, dry enough to hold off mold |
| Temperature | 60 to 68 °F (15 to 20 °C) | Cooler air keeps more of the aroma compounds in the bud |
| Air movement | Gentle, indirect | Moves damp air away without drying the outside too fast |
| Light | Dark | Light breaks down what you are trying to keep |
| Time | About 7 to 14 days | Depends on bud size, how you trimmed and the room |
Many growers remember it as 60 and 60: 60 °F and 60% RH. You do not need to hit it exactly. Staying inside the ranges matters more than any single number.
What happens when the humidity is off
- Below 50%. The outside dries in a few days and seals in moisture at the core. Buds feel done before they are, the smell turns grassy, and the smoke is harsh. If your flower smells like hay, this is the usual cause: why weed smells like hay.
- Above 65%. Drying stalls, and dense buds become a mold risk, especially in still air.
- Swinging between the two. A room that is 45% by day and 70% at night dries unevenly. Steady matters as much as the average.
How to hold the range
- Measure first. Put a hygrometer at bud height, not on the floor.
- Too humid: run a dehumidifier, space branches further apart and keep air moving under and around them.
- Too dry: hang whole plants or large branches instead of small ones, leave more leaf on until after the dry, and use a humidifier if you have one.
- Small spaces: a closet or tent is easier to control than a room. See how to dry weed in a closet.
For the errors that cost the most, read five common drying mistakes.
Day by day
- Days 1 to 3. The most water leaves now. Watch the humidity, it will climb. Keep it under 65%.
- Days 4 to 7. The outside starts to feel dry. Do not speed things up.
- Days 7 to 14. Test small stems. When they snap instead of bending, the flower is ready to trim and jar.
The full readiness check is in how to tell weed is dry enough to jar.
Weed got wet or went into the jar too soon?
Take it out of the jar, spread it on a rack or hang it again in the same 55 to 65% conditions, and let it finish. Do not use heat to hurry it. More in what to do with moist weed.
After drying: hold the cure at 62%
Drying takes the flower down. Curing holds it steady while the last moisture evens out. In a sealed jar the target is 62% RH, with regular burping in the first week. A two-way pack in each jar keeps it there between burps. See how to burp jars.
Have packs ready before the dry ends
One 8 g Humidi-Cure 62% pack per ounce jar. Two-way, plant-fiber core, no liquid or gel inside.
Get 20 × 8 g packsSee all sizes
Any 2 boxes save 10%, and U.S. orders of $40 or more ship free.
Frequently asked questions
What is the best humidity for drying weed?
55 to 65% relative humidity, held steady, at about 60 to 68 °F.
Is 50% humidity too low for drying weed?
It is on the low side. Buds dry faster on the outside than at the core, which costs aroma and can leave a grassy smell. Hang larger branches or add humidity to slow it down.
Is 70% humidity too high for drying?
Yes. Above 65% drying slows and the risk of mold goes up, most of all in dense buds and still air.
How long should weed dry before jarring?
Usually 7 to 14 days. Go by the stems, not the calendar: when small stems snap, it is ready.
