Margarine can sit out at room temperature for up to two hours. \nAfter that, it should be refrigerated.
Can Margarine Be Left Out At Room Temperature?

Margarine can be left out at room temperature for a short period of time.
If the temperature is above 70 degrees Fahrenheit, the margarine will start to soften and will become difficult to spread. If the temperature is above 90 degrees Fahrenheit, the margarine will melt and will not return to a solid state.
How Long Does It Take For Margarine To Go Bad?
Margarine can go bad after about a month if it is not stored properly.
If stored in a cool, dry place, margarine will last about a month. If stored in the refrigerator, margarine will last about two months. If stored in the freezer, margarine will last about six months.
Does Margarine Need To Be Refrigerated?

Margarine does not need to be refrigerated.
However, it will become harder at lower temperatures.
How Long Can Butter Or Margarine Sit Out?
Butter and margarine can sit out for up to two hours at room temperature before they need to be refrigerated.
Is It Okay To Let Butter Sit Out Overnight?

Yes, it is okay to let butter sit out overnight.
Butter is a dairy product made from the fat and protein in milk. It is a solid at room temperature, but it will begin to soften and melt if it is left out for too long.
Butter can go bad if it is not stored properly. If it is left out at room temperature for more than a day, it will begin to spoil. Butter should be stored in the refrigerator, in a covered container, to prevent it from going bad.
Can You Put Butter Back In The Fridge After Leaving It Out?
Yes, you can put butter back in the fridge after leaving it out.
You should put it back in the fridge as soon as possible, however, as butter can go bad quickly when left out at room temperature.
How Can You Tell If Margarine Is Spoiled?
If margarine is spoiled, it will have an off odor, be discolored, or have mold growing on it.
If you see any of these signs, throw the margarine away and don’t eat it.
What Does Spoiled Margarine Look Like?
Spoiled margarine will have an off-color, usually yellow or green, and an off-flavor.
The texture will also be different, often becoming hard or lumpy.
Does Soft Margarine Go Bad?
Yes, soft margarine can go bad. The signs of bad margarine are a sour smell, off-taste, and mold growth.
Discard margarine that shows these signs.
What Kind Of Butter Does Not Need To Be Refrigerated?
Butter made with pasteurized cream does not need to be refrigerated.
Butter made with raw cream should be refrigerated.
How Can You Tell If Butter Is Rancid?
The best way to tell if butter is rancid is by the smell. Rancid butter will have a sour, unpleasant smell.
You can also tell if butter is rancid by the taste. Rancid butter will have a sour, unpleasant taste.