Online cannabis prices in the US follow consistent seasonal and cyclical patterns. THC categories show the highest month-on-month volatility – moving 5 to 15% in either direction during active promotional cycles. CBD pricing is structurally more stable, typically moving less than 3% month-on-month outside of major retail events. These patterns are tracked weekly by the CannabisDealsUS Cannabis Price Index across 35,000+ products from 200+ verified US online retailers.
This page documents monthly price movement patterns across all major hemp-derived cannabinoid categories. It is updated as new CPI data is published. For the latest weekly data, see the Cannabis Price Index. For per-unit benchmarks, see Online Cannabis Price Benchmarks.
Monthly Price Pattern Overview
| Category | Typical monthly volatility | Primary driver |
|---|---|---|
| THC Flower | 5 – 20% WoW swings | New product launches, THCA premium shifts |
| THC Vapes | 5 – 15% WoW | Promotional cycles, Delta-8/THCA spread |
| THC Edibles | 3 – 10% WoW | Seasonal demand, gummy category competition |
| CBD Oil | 1 – 4% WoW | Market maturity; moves on major events only |
| Vaporizers / Hardware | 3 – 12% WoW | New device launches, seasonal gifting demand |
| Mushrooms | 8 – 25% WoW | Emerging category; high structural volatility |
“THC categories drive the price story month-to-month. CBD anchors the index – it is the most stable segment and acts as the market baseline against which THC volatility is measured.”
– Theo Valmis, Founder, CannabisDealsUS
Key Price Events by Month
January
January typically brings post-holiday price normalization. Discount rates fall sharply from their December peaks. CBD oil frequently shows its lowest discount rate of the year in January. THC categories stabilize after the Green Wednesday and Christmas promotional cycles.
February / March
Pre-420 inventory builds begin in March. Merchants increase product listings and begin promotional positioning. The index typically shows expanding SKU counts and moderate list price increases in THC categories during March.
April (420 Season)
April is the highest-volume promotional month in the online cannabis calendar. The 420 cycle (typically April 15 to 22) produces the deepest discount rates of the year across THC categories – effective prices can fall 20 to 40% below list price during peak windows. Post-420 (late April) typically shows a sharp discount rate pullback.
May / June
Post-420 stabilization. Effective prices recover toward list price. New product launches increase in May and June as brands refresh catalogs. Vaporizer hardware sees new model releases, driving category-level price movement.
July / August
Summer shows moderate pricing stability with lower promotional intensity. Back-to-college season (August) produces modest promotional activity in budget-tier THC products.
September / October
Pre-Green Wednesday positioning begins in October. Merchants build promotional inventory. Discount depth begins to increase as early promotional activity starts.
November / December
Green Wednesday and Black Friday are the second-highest promotional intensity period after 420. Discount rates in THC reach seasonal highs. CBD also sees its highest promotional activity of the year.
Frequently Asked Questions
When are cannabis prices lowest online?
The lowest effective prices in THC categories occur during the 420 window (mid-to-late April) and Green Wednesday / Black Friday (late November). CBD prices are most competitive in November and December.
Do cannabis prices go up or down over time?
The index has tracked sustained list price compression in CBD categories, consistent with broader market maturity. THC categories show more variable trajectory influenced by THCA market growth, regulatory uncertainty, and competitive dynamics.
Related Pages
- Cannabis Price Index – Weekly Data
- Cannabis Price Index Archive
- Online Cannabis Price Benchmarks
- Hemp-Derived Cannabinoid Pricing Explained
- Average THC Flower Prices Online
- Average THC Vape Prices Online
How to Cite This Data
Data from the CannabisDealsUS Cannabis Price Index. Dataset: DOI 10.5281/zenodo.18351089. License: CC BY-NC 4.0.
Published by Theo Valmis, Founder, CannabisDealsUS.
Last Updated on May 29, 2026 by Theo Valmis
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