Translation:Tomorrow's weather is not bad.
Don't be embarrassed! It's good to ask questions if you're ever confused; learning a new language is a weird thing sometimes.
-ます isn't a word on its own; it's a verb form that modifies plain verbs to sound more polite. Ex: 行く (いく, to go) -> 行きます (いきます, to go). The meaning is the same, but the -ます form sounds more respectful.
ですis a verb, meaning "to be" or "is." It is the polite form of だ.
A tip to keep them straight: です is essentially the -ます form of だ.