Το βράδυ πέφτει η θερμοκρασία.

In Greek, some time expressions use the article and a noun to mean at/in/during a certain time.

So το βράδυ can mean:

• the evening as a noun, depending on context
• but very often in the evening / at night as an adverbial time expression

In this sentence, το βράδυ tells you when the temperature falls, so it works like in the evening.

This is very common in Greek:

• το πρωί = in the morning
• το μεσημέρι = at noon / in the midday
• το απόγευμα = in the afternoon
• το βράδυ = in the evening / at night

It is in the accusative singular.

Greek often uses the accusative for expressions of time when. So το βράδυ is an accusative time expression meaning in the evening / at night.

A learner may expect a preposition like σε, but Greek often does not need one in these common time phrases.

Greek uses the definite article much more often than English.

Here:

• το βράδυ = a fixed time expression with the article
• η θερμοκρασία = the temperature, the subject of the sentence

So both articles are perfectly normal:

• το is neuter singular
• η is feminine singular

Even when English would not always use the, Greek often does.

The subject is η θερμοκρασία.

Even though it comes after the verb, it is still the subject. Greek word order is more flexible than English word order.

So:

• πέφτει = falls / drops
• η θερμοκρασία = the temperature

Literally, the structure is closer to:

• In the evening falls the temperature

But natural English rearranges this as:

• The temperature falls in the evening

Because Greek allows much freer word order than English.

Πέφτει η θερμοκρασία is a very natural order. Putting the verb first can make the sentence sound a bit more fluid or put slight focus on the action.

You could also say:

• Το βράδυ η θερμοκρασία πέφτει.

That is also grammatical, but the original sentence is very normal Greek.

So the key point is:

• English depends heavily on word order
• Greek depends more on endings, agreement, and context

Because the subject, η θερμοκρασία, is singular.

Η θερμοκρασία = the temperature
So the verb must also be third person singular:

• πέφτω = I fall / I drop
• πέφτεις = you fall
• πέφτει = he/she/it falls

Since temperature is grammatically singular, Greek uses πέφτει.

Literally, πέφτει means falls.

In this sentence, it is used in the same metaphorical way as English the temperature falls or the temperature drops.

So:

• πέφτω = fall
• η θερμοκρασία πέφτει = the temperature falls / drops

This is a very standard and common way to talk about temperature.

Yes, πέφτει is in the present tense.

Greek present tense can be used for:

• something happening now
• something that happens regularly
• a general fact
• a typical pattern

In this sentence, it most naturally expresses a general tendency or usual pattern:

• In the evening, the temperature drops.

So it is not necessarily about one single evening right now; it can describe what usually happens.

Yes, depending on context, that can be a natural English translation.

Greek says more literally:

• In the evening, the temperature falls.

But natural English might say:

• It gets cooler in the evening.
• At night the temperature drops.

The exact English wording can change, even though the Greek structure stays the same.

This is a very common question.

• βράδυ usually means evening or the early part of the night
• νύχτα means night more generally, especially the later/darker period

So:

• το βράδυ = in the evening / in the night-time part around evening
• τη νύχτα = at night

In many contexts there is overlap, but they are not identical.

So this sentence suggests:

• in the evening or as evening comes, the temperature drops

Πέφτει is pronounced roughly PEF-ti.

A few helpful points:

• the stress is on πέφ-
• the combination ει is pronounced like ee in Modern Greek
• so -τει sounds like -ti

Greek spelling keeps older spelling patterns, so several different letter combinations can make an ee / i sound, including:

• ι
• η
• υ
• ει
• οι
• υι

So πέφτει is spelled with ει, even though it sounds like -ti.

Normally, no. You would usually keep the article and say η θερμοκρασία.

Without the article, θερμοκρασία sounds less natural here. Greek often prefers the article with nouns where English may or may not use the.

So the normal sentence is:

• Το βράδυ πέφτει η θερμοκρασία.

Yes. Greek word order is flexible, so these are all possible:

• Το βράδυ πέφτει η θερμοκρασία.
• Η θερμοκρασία πέφτει το βράδυ.
• Πέφτει η θερμοκρασία το βράδυ.

They all mean essentially the same thing, but the emphasis can shift slightly.

For a learner, the safest neutral pattern is often:

• Η θερμοκρασία πέφτει το βράδυ.

But the original sentence is completely natural and common.