Learn Swedish: Det kommer inte att snöa nästa vecka.

We use kommer att (will / is going to) to make a prediction about the future, especially for things outside of our control like the weather. It is always followed by the infinitive (dictionary) form of the main verb, which here is snöa (to snow).

Why is inte placed right after kommer instead of later in the sentence?

In a standard main clause, the negation inte (not) usually goes right after the first active verb. Since kommer is the first verb here, inte steps right in behind it, splitting up the kommer att pair.

Do Swedish speakers pronounce all the words in kommer inte att snöa exactly as written?

In everyday spoken Swedish, the word att is almost always pronounced like the letter "å". Furthermore, when using kommer att, many speakers drop the att entirely and simply say "Det kommer inte snöa".

Why isn't there a preposition before nästa vecka?

Just like in English, Swedish doesn't need a preposition for "next week". You don't say "in next week" or "on next week"; you simply attach nästa vecka directly to the sentence as a time phrase.

What happens to the word order if I start the sentence with ?