ame desu kara, haha wo eki made kuruma de okurimasu.

Because から attaches naturally to a full clause, and 雨 is a noun.
To make it a complete polite statement, Japanese adds です:

• 雨です = It is rainy / It is raining
• 雨ですから = Because it is raining

In casual speech, you would often hear:

• 雨だから

You may also see 雨なので, which is a bit softer/more formal than から.

Literally, yes, it is based on the noun 雨 (rain). But in natural Japanese, 雨です is commonly used where English would say:

• It’s raining
• It’s rainy

Japanese often does not need to express weather the same way English does. So even though the structure looks different, it is a normal way to talk about rain.

Japanese often omits subjects and topics when they are obvious from context.

So this sentence is understood as something like:

• (I) will drive my mother to the station because it’s raining.

Adding 私は is possible:

• 私は雨ですから、母を駅まで車で送ります。

But it is often unnecessary unless you want contrast or extra clarity.

When talking about your own mother to someone else, Japanese usually uses 母.

• 母 = my mother (more neutral/humble when referring to your own family)
• お母さん = mom / mother, often used when addressing your mother directly, or when referring to someone else’s mother more politely

So in this sentence, 母 is the normal choice if the speaker is talking about their own mother.

Because 母 is the direct object of 送ります.

Here, 送る means to escort, take, drive, or send someone off. The person being taken is marked with を:

• 母を送ります = I will take/see off my mother

So in this sentence:

• 母を = my mother (the person being driven)

まで means up to / as far as / until, and here it marks the endpoint.

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

This emphasizes the destination as the limit of the movement.

You could sometimes see 駅に送ります too, but 駅まで送ります is very natural when you mean take someone as far as the station.

So:

• 母を駅まで送ります = I’ll take my mother to the station

Here, で marks the means or method.

• 車で = by car

So the sentence says the speaker will take their mother to the station by car.

Compare:

• 電車で行きます = go by train
• バスで行きます = go by bus
• 車で送ります = drive someone / take someone by car

This is different from に, which can mark location or direction, not the means of transportation in this kind of sentence.

送ります comes from 送る and can mean several related things depending on context:

• to send
• to escort
• to see someone off
• to take someone somewhere

In this sentence, because we have:

• a person: 母を
• a destination: 駅まで
• a method: 車で

the meaning is naturally:

• drive my mother to the station
• take my mother to the station by car

So it does not mean send in the mail sense here.

Japanese non-past form covers both present and future, depending on context.

So:

• 送ります can mean I drive or I will drive

In this sentence, the reason clause because it’s raining makes it clear that this is about a current or upcoming action, so English usually translates it as future:

• I’ll drive my mother to the station because it’s raining.

Not completely. Japanese word order is more flexible than English because particles show each word’s role.

This sentence follows a very natural order:

• 雨ですから、母を駅まで車で送ります。

But some parts could move around and still be understood, for example:

• 雨ですから、車で母を駅まで送ります。

Both are grammatical. However, the original order sounds very natural and easy to follow.

They are very close in meaning, but differ in politeness and tone.

• だから = because, so (casual)
• ですから = because, so (polite)

So:

• 雨だから、母を駅まで車で送る。
  casual

• 雨ですから、母を駅まで車で送ります。
  polite

Using ですから matches the polite verb 送ります, so the style is consistent.