What does weed cost in Thornton?

Flower in Thornton averages $10.61 per gram with a median of $10.00, measured across 35 priced listings at 1 licensed dispensaries.

How is this price index calculated?

Every priced flower listing whose package size is published on the menu is converted to a price per gram, then averaged. Listings without a published size are excluded rather than estimated.

Thornton, CO cannabis price index

Flower in Thornton typically costs $10 per gram (average $10.61) — measured across 35 priced listings at 1 licensed dispensaries.

Comparable range $9.10–$13 per gram · index refreshed Sep 23, 2026

↑ See the statewide Colorado flower price index

$10.61

Average per gram

$10

Median per gram

$0.52

Cheapest per gram

$22.29

Most expensive per gram

Thornton flower prices by package size

Averages of the real packages on Thornton menus — not a per-gram figure multiplied up.

Thornton average flower price by package size
Size	Average	Lowest	Average per gram	Listings
Eighth (3.5g)	$31.85	$31.85	$9.10	13

How this index is built

Each priced flower listing in Thornton whose package size is published on the menu is converted to a price per gram. Listings with no published size are excluded rather than estimated, which is why the listing count here is smaller than the total menu count.

Go deeper: cheapest weed in Thornton, cheap ounces, cheapest flower per gram, Thornton deals.

Figures come from licensed Colorado dispensary menus and change constantly. Adults 21+ only.