Could i keep a 55 gallon tank outside?

I have a small 5 inch largemouth bass and its time to move it into a bigger tank. I have a friend who has a 55 gallon just the tank and will give it to me but the only place for it is in my backyard. I bet it will be very pondlike and green but i want to make sure that it won’t get cold in sacramento california? If i put a bunch of plants and gravel will it be ok?

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