ame desu kara, haha ni eki made mukae ni kite moraimasu.

Because から meaning because / since attaches to a complete predicate.

• 雨 is a noun.
• Nouns need です to make a full statement in polite Japanese.
• So 雨です = It is rain / It is rainy / It is raining in context.
• Then から is added: 雨ですから = Because it’s raining

In casual speech, this would often become 雨だから.

For comparison:

• 寒いから = because it’s cold
  
  • no です is needed here, because 寒い is already a complete い-adjective

Yes, 雨 literally means rain, but Japanese often uses weather words in a very compact way.

So:

• 雨です can mean It is rain
• In natural English, that usually becomes It’s raining or It’s rainy

Japanese often leaves out words that English would require, like it is or a progressive form like raining. The meaning comes from context.

Here, に marks the person who performs the action in the pattern V-て もらう.

So:

• 母に = by/from my mother
• 母に迎えに来てもらいます = I’ll have my mother come pick me up / I’ll ask my mother to come pick me up

In this pattern:

• the speaker is the one who benefits
• に marks the person doing the favor

So 母に does not mean to mother in the usual English sense. It marks the person I’m receiving the action from.

V-て もらう means to receive the favor of someone doing something.

So:

• 来てもらいます literally = I receive someone’s coming
• natural English = I’ll have someone come / I’ll ask someone to come

In this sentence:

• 母に駅まで迎えに来てもらいます
• literally: I will receive my mother’s coming to the station to pick me up
• naturally: I’ll have my mother come pick me up at the station

This grammar often implies:

• the action is helpful to the speaker
• the speaker arranged or requested it

Because もらう attaches to the て-form of the verb before it.

So the pattern is:

• 来る → 来て
• 来て + もらいます

This is the standard grammar:

• 読んでもらう = have someone read
• 手伝ってもらう = have someone help
• 迎えに来てもらう = have someone come pick you up

So 来て is not random; it is required by the V-て もらう pattern.

This is a very common structure:

• verb stem + に
  • 行く / 来る

It means go/come in order to do something.

Here:

• 迎える = to meet / to pick up
• verb stem = 迎え
• 迎えに来る = come to pick someone up

So the sentence contains:

• 駅まで迎えに来て = come to the station to pick me up

Other examples:

• 食べに行く = go to eat
• 見に来る = come to see
• 買いに行く = go to buy

This is about point of view.

Japanese chooses 来る or 行く based on the speaker’s reference point.

• 来る = come toward the speaker or the relevant location
• 行く = go away from that reference point

In this sentence, the station is treated as the place where the speaker will be, so from the speaker’s perspective the mother is coming there.

So:

• 迎えに来る = come pick me up

If you described the situation from the mother’s side, 迎えに行く might be used instead.

This is one of those places where Japanese and English don’t always match word-for-word.

まで means up to / as far as / to.

So:

• 駅まで = to the station / as far as the station

In this sentence, it marks the destination or endpoint of the mother’s coming.

So:

• 駅まで迎えに来る = come to the station to pick me up

In natural English, this may simply become pick me up at the station, even though Japanese uses まで.

The person being picked up is omitted because it is understood from context.

In Japanese, obvious information is often left out.

Here, もらいます strongly suggests that the action benefits the speaker, so the understood meaning is usually:

• my mother will come pick me up

If you wanted to state it explicitly, you could say something like:

• 私を駅まで迎えに来てもらいます

But in normal Japanese, that would often be unnecessary.

When talking to other people about your own mother, Japanese usually uses 母.

• 母 = my mother, in a plain/humble way
• お母さん = mother / mom, often used when addressing your mother directly or referring to someone else’s mother politely

So in this sentence, 母 is the natural choice because the speaker is talking about their own mother to someone else.

もらいます is polite non-past.

In Japanese, non-past can mean:

• present
• future

Here, because the action has not happened yet, it is understood as future:

• I will have my mother come pick me up

If it were past:

• 来てもらいました = I had my mother come pick me up / My mother came and picked me up for me

Yes. It is in polite です/ます style.

You can see that in:

• です
• もらいます

A more casual version would be:

• 雨だから、母に駅まで迎えに来てもらう。

So the original sentence is appropriate in polite conversation or standard textbook Japanese.