Are there signs given to us just before the Rapture? Using scripture.

Joel speaks of this “Day of the Lord” is when Jesus returns to reign on this earth. Not to be confused with “The day of the Lord” as when Jesus is seen in the clouds at the timing of the rapture.

Joel 2:11 And the LORD shall utter his voice before his army: for his camp is very great: for he is strong that executeth his word: for the day of the LORD is great and very terrible; and who can abide it?

KJV

Joel 2:31 The sun shall be turned into darkness, and the moon into blood, before the great and the terrible day of the LORD come.

The phenomena of the sky. The darkening of the sun and the extinction of the lights of heaven are frequently mentioned in the Scriptures as harbingers of the Day of the Lord or of approaching judgment (Joel 2:2,10; 3:15; Isaiah 13:10; 34:4; Jeremiah 4:23; Matthew 24:29; Mark 13:24; Luke 21:25; Revelation 6:12).

(Wycliffe Bible Commentary.)

Revelation 6:12 And I beheld when he had opened the sixth seal, and, lo, there was a great earthquake; and the sun became black as sackcloth of hair, and the moon became as blood;

KJV

This leading up to the Reign of Christ on this earth.

Matthew 24:29-30

29 Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken:

30 And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory.

KJV

Notice; immediately after the tribulation.

Isaiah 13:9-10

9 Behold, the day of the LORD cometh, cruel both with wrath and fierce anger, to lay the land desolate: and he shall destroy the sinners thereof out of it.

10 For the stars of heaven and the constellations thereof shall not give their light: the sun shall be darkened in his going forth, and the moon shall not cause her light to shine.

KJV

It does not appear there will be any of these harbingers before the rapture.