Zoo when it’s cold and rainy

Heeeey Houstonians. I'm originally from Houston, but I live outside the area. I'll be coming home for my birthday this weekend, and I really wanted to visit the zoo on Friday. I've never been when it's 40 degrees and potentially raining, but I wanted to see if anyone had any thoughts. I know most animals can stand colder temps than I can, but if it's raining are they all going to be inside?

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Any specific rhino insight?

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I know this is a low-key absurd question for a full on adult to ask. But, here I am. So. Any thoughts/experience is appreciated.