Here's why:
* "In regards" is not a proper phrase. The correct phrase is "in regards to."
* The phrase needs a preposition. You need a preposition like "to," "of," or "about" to connect "in regards" to the subject.
Here are some correct ways to say it:
* In regards to rain and snow: This is the most common and correct way to phrase it.
* Regarding rain and snow: This is another common and grammatically correct way.
* With respect to rain and snow: This is a slightly more formal option.
Let me know if you have other grammar questions!