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Smoking Prime Rib Roast – Time and Temp
A smoked prime rib (standing rib roast) is the ultimate holiday centerpiece: reverse-seared to an edge-to-edge rosy medium-rare with a deep smoky crust. Set your dinner time below and we will plan every step backward so it hits the table perfectly.
How to smoke smoking prime rib roast – time and temp
Reverse sear is the way: smoke the roast at 225 to 250 F until it reaches about 120 to 125 F internal for medium-rare (roughly 30 to 40 minutes per pound), rest it, then blast it hot – a 500 F oven or a hard sear – for a few minutes to set the crust. Carryover brings it to a final 130 to 135 F.
Tips
- Dry-brine with salt 1 to 3 days ahead for the best crust and seasoning.
- Pull at 120 to 125 F, then sear – carryover finishes it to medium-rare.
- Rest at least 20 to 30 minutes before the sear or slicing.
- Slice against the grain; save the bones for later.
Frequently asked
What temp for medium-rare prime rib? Pull at 120 to 125 F, sear, and let carryover reach 130 to 135 F.
How long to smoke a prime rib? About 30 to 40 minutes per pound at 225 to 250 F, plus the sear. The calculator plans it to your weight.
Should I reverse sear? Yes – low smoke first, then a hot sear gives edge-to-edge pink and a great crust.
How Much Prime Rib Do I Need to Buy and Cook?
Fine-tune trim & cook loss
Lost to trim: - · lost to the cook: -
💲 Which form is the better deal?
How Much Prime Rib Per Person (Serving Size Chart)
| Guests | Raw Prime rib / standing rib roast to buy | Trimmed (on the smoker) | Cooked (served) | Good pick |
|---|---|---|---|---|
| 1-5 | 4.0 lb | 3.2 lb | 2.5 lb | ~4.0 lb (sizes vary) |
| 6-10 | 8.0 lb | 6.4 lb | 5.0 lb | ~8.0 lb (sizes vary) |
| 11-15 | 12 lb | 9.6 lb | 7.5 lb | ~12 lb (sizes vary) |
| 16-20 | 16 lb | 13 lb | 10 lb | ~16 lb (sizes vary) |
| 21-30 | 24 lb | 19 lb | 15 lb | ~24 lb (sizes vary) |
| 31-40 | 32 lb | 26 lb | 20 lb | ~32 lb (sizes vary) |
| 41-50 | 40 lb | 32 lb | 25 lb | ~40 lb (sizes vary) |
Raw weight to comfortably feed the top of each range at an average appetite (~0.50 lb cooked per person), no leftovers. Bump up a size for hearty eaters, light sides, or leftovers.
Prime rib / standing rib roast prices this week (and the trend)
$15.41/lb average grocery feature price (week of Aug 1, 2026)
See prices for every cut → · How much should you buy? · Cooking for money? Price the whole job
Source: USDA Agricultural Marketing Service Market News weekly retail feature reports, tracked by MeatSmokingCalculator. Prices are advertised grocery features – your store will vary.
Times & temperatures
| Style | Method | Pit temp | Approx time | Pull / done temp |
|---|---|---|---|---|
| Classic | Slow and Low | 225°F / 107°C | varies | Rare 125°F · Medium-Rare 130°F · Medium 140°F · Medium-Well 150°F · Well 160°F |
| Classic | Hot and Fast | 300°F / 149°C | varies | Rare 125°F · Medium-Rare 130°F · Medium 140°F · Medium-Well 150°F · Well 160°F |
📊 See the full smoking times & temps chart for every cut →
From the community
Written by John Kirker, who built the first meat smoking calculator in 2011. Times come from cooks we have actually run and logged; temperature and feel decide the finish, never the clock alone.
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