The bag of almonds has been in the pantry since last year’s holiday baking. They look fine, and nobody remembers the date. Do almonds even go bad, or is that just a bag of nuts that lasts forever? Here is what USDA, university extension sources and the almond industry say about shelf life, rancidity and mold.
Do almonds go bad?
The Short Answer: Yes. Almonds can become rancid as their natural oils deteriorate, and how long that takes depends on their condition when purchased, their packaging and how they are stored. For shelled almonds, USDA’s FoodKeeper lists 4 months in the pantry, 8 months in the refrigerator and 10 months in the freezer. UC lists about 1 year refrigerated and a year or more frozen. These are quality estimates, not safety tests. Keep almonds dry and sealed, refrigerate or freeze what you won’t use within a few weeks, and discard moldy or deteriorated almonds. UC says rancid nuts are not unsafe, but normal appearance and smell cannot rule out harmful bacteria.
For a complete pantry and fridge reference, see our Food Storage Guide. For other nuts and pantry fats, see whether pecans and peanut butter go bad. Ready to cook with them? Our Almond Joy hot chocolate is topped with toasted sliced almonds, and our nectarine crisp has an almond flour topping.
Almond Shelf Life: At a Glance
Pantry (about 70°F)
USDA FoodKeeper: 4 months shelled, 6 months in the shell. Kansas State Extension: 4 months in the shell, 2 weeks once a package is opened. UC: quality for up to a few months
Refrigerator (40°F or below)
USDA FoodKeeper: 8 months shelled, 16 months in the shell. UC: about 1 year. A UC Master Food Preserver column: 6 to 9 months for shelled nuts
Freezer (0°F or below)
USDA FoodKeeper: 10 months shelled, 20 months in the shell. UC: a year or more. UC Davis Postharvest: up to 2 years for nuts
Industry figure
Almond Board of California: more than 2 years in cool (below 50°F), dry (below 65% relative humidity) conditions
Rancid almonds
UC says rancid nuts are not unsafe, but the flavor is sharp and unpleasant. Normal appearance and smell cannot rule out harmful bacteria
When to toss them
Mold, bugs, unexpectedly damp or clumped plain almonds, or a stale, painty or otherwise unpleasant odor
Key Takeaways
USDA’s FoodKeeper data (dataset updated January 2025) lists almonds without shells at 4 months in the pantry, 8 months refrigerated and 10 months frozen. Almonds in the shell are listed at 6, 16 and 20 months. We treat these as quality estimates.
Kansas State Extension’s cupboard guide (revised June 2026) lists nuts generally, not almonds specifically: 4 months in the shell, 3 months in an unopened vacuum can and 2 weeks in an opened package, at 70°F. It says to refrigerate after opening and freeze for longer storage.
NDSU Extension’s food storage guide (reviewed January 2023) lists opened nuts at 4 to 6 months when refrigerated. Its unopened vacuum-can time of 1 year differs from Kansas State’s 3 mo
