На улице холодно, и мне хочется что‑то тёплое.

In Russian, you often do not need a present-tense verb meaning is / are.

Холодно is a state word (sometimes called a predicative adverb), and it can mean it is cold all by itself.

So:

• На улице холодно. = It’s cold outside.

This is very common in Russian:

• Жарко. = It’s hot.
• Темно. = It’s dark.
• Интересно. = It’s interesting.

Russian simply leaves out the present-tense to be in sentences like this.

Literally, на улице means on the street.

But in everyday Russian, it very often means outside / outdoors, especially when talking about weather or conditions outdoors.

Examples:

• На улице холодно. = It’s cold outside.
• На улице дождь. = It’s raining outside / There’s rain outside.
• Дети играют на улице. = The children are playing outside.

Grammatically:

• улица = street
• на = on
• на улице = on the street / outside

The noun is in the prepositional case after на when talking about location.

Because хочется works with the dative case, not the nominative.

So Russian expresses this idea more like:

• To me, it is desired
• or more naturally: I feel like... / I want...

That is why you get:

• мне хочется = I feel like / I want

Here:

• я = I (subject form)
• мне = to me (dative form)

So:

• Я хочу = I want
• Мне хочется = I feel like / I have a desire for

Both can translate as I want, but they are not exactly the same in tone.

The main difference is tone.

• Я хочу is more direct and straightforward: I want
• Мне хочется is softer and more like: I feel like, I’m in the mood for, or I have a craving for

So in this sentence, мне хочется что‑то тёплое sounds natural because it expresses a feeling that comes from the situation: it’s cold outside, so I feel like having something warm.

Compare:

• Я хочу чай. = I want tea.
• Мне хочется чаю / чай. = I feel like some tea.

A learner can think of хочется as a more emotional or spontaneous kind of wanting.

The form хочется comes from the verb хотеться, which is different from хотеть.

• хотеть = to want
• хотеться = to feel like wanting / to be desired by someone

This reflexive-looking form is used in an impersonal construction:

• Мне хочется спать. = I feel sleepy / I feel like sleeping.
• Ему хочется есть. = He feels like eating.
• Нам хочется домой. = We feel like going home.

So хочется is not just хочу + ся. It is its own common pattern.

Что‑то means something.

It is made from:

• что = what
• -то = an indefinite particle

So:

• что‑то = something
• кто‑то = someone
• где‑то = somewhere

In this sentence, что‑то тёплое means something warm.

It refers to an unspecified thing. The speaker does not say exactly what they want—maybe tea, soup, coffee, food, etc.—just something warm.

Because тёплое is an adjective, not an adverb.

It agrees with the implied noun behind что‑то:

• что‑то is grammatically neuter singular
• so the adjective is also neuter singular
• therefore: тёплое

So:

• что‑то тёплое = something warm

This is a very common Russian pattern where an adjective stands by itself because the noun is understood.

Examples:

• что‑то интересное = something interesting
• что‑то вкусное = something tasty
• что‑то странное = something strange

You can think of an omitted noun like что‑то тёплое [напиток / блюдо / что-нибудь], but Russian normally just uses the adjective.

Because it agrees with что‑то in gender, number, and case.

Here is what matters:

• что‑то behaves as neuter singular
• it is the direct object of хочется
• for an inanimate neuter adjective, accusative singular looks the same as nominative singular

So the correct form is:

• тёплое

Compare:

• тёплый чай = warm tea
• тёплая вода = warm water
• тёплое молоко = warm milk
• что‑то тёплое = something warm

Yes, мне хочется чего‑то тёплого is also very natural.

Both are possible:

• мне хочется что‑то тёплое
• мне хочется чего‑то тёплого

Broadly speaking:

• что‑то тёплое points to some warm thing / something warm
• чего‑то тёплого often sounds a bit more like some warm stuff / something warm of some kind, with a slightly more indefinite or partitive feeling

In everyday speech, especially with desires for food or drink, the genitive version is very common:

• Хочется чаю. = I feel like some tea.
• Хочется чего‑нибудь сладкого. = I feel like something sweet.

So the sentence you were given is correct, but learners should know that the genitive pattern is common too.

Because и joins two clauses here, and each clause has its own predicate:

1. На улице холодно
2. мне хочется что‑то тёплое

In Russian, when и connects two full clauses, a comma is usually used:

• На улице холодно, и мне хочется что‑то тёплое.

This is similar to English:

• It’s cold outside, and I feel like something warm.

The given word order is the most neutral and natural:

• На улице холодно, и мне хочется что‑то тёплое.

But Russian word order is flexible, and changing it can shift emphasis.

For example:

• Мне хочется что‑то тёплое, потому что на улице холодно.
• На улице холодно, и хочется мне что‑то тёплое.
  This is possible, but sounds marked or literary.

In normal conversation, the original order is best.

Two useful points:

1. что is often pronounced more like што in standard speech, even though it is written что. So что‑то sounds roughly like што-та.

2. The letter ё in тёплое is pronounced yo:

   • тёплое ≈ TYOP-luh-ye

Also remember that ё is sometimes written as е in normal texts, but it still means ё in words like this. So you may see:

• теплое

but it is still pronounced тёплое.