For drying cannabis, temperature control is critical to preserve cannabinoids, terpenes, and overall flower quality.

The ideal environment for drying weed

Recommended Temperature Range: 60–70°F (15–21°C)

Ideal target: around 60–65°F (16–18°C)

Why This Range Matters

Humidity and Airflow

Relative Humidity: 55–65% RH during drying

Airflow: Gentle, indirect air movement. Do not blow fans directly on buds.

Dark environment: Light degrades THC and terpenes.

Drying Duration

Typically 7–14 days

Buds are ready for curing when small stems snap instead of bend

Professional Tip

Recommend temperature and RH setpoints when using a dehumidifier

Here are recommended temperature and relative humidity (RH) setpoints when drying cannabis with a greenhouse dehumidifier, based on best practices used in controlled grow and post-harvest rooms.

Ideal Drying Setpoints (With Dehumidifier)

Primary Target (Most Common Recommendation)

Temperature: 60–65°F (16–18°C)

Relative Humidity: 58–62% RH

Drying Time: 10–14 days

This range balances slow moisture release with maximum terpene retention, producing smooth smoke and strong aroma.

Alternative Setpoints by Drying Phase

Days 1–3: Initial Moisture Removal

Temperature: 65–68°F (18–20°C)

RH: 60–65%

Days 4–10: Controlled Drying (Critical Phase)

Temperature: 60–65°F (16–18°C)

RH: 58–62%

Final 1–2 Days (Optional Fine-Tuning)

Temperature: 60°F (16°C)

RH: 55–58%

Dehumidifier Control Recommendations

Use continuous drain to avoid RH spikes

Avoid oversized units that pull RH down too fast

Set dehumidifier 2–3% RH lower than target room RH (accounts for sensor placement)

Pair with a circulation fan (low speed, indirect airflow)

Use a hygrometer at canopy level, not near the unit

Warning Setpoints to Avoid

Commercial Grow-Room Tip

In sealed drying rooms, a refrigerant or low-temperature dehumidifier designed for grow environments maintains tighter RH control without excessive heat output—critical for terpene preservation.