Is Gust of Wind powerful enough to stop Ranged Weapon and/or Spell attacks?

For example I make a Fire Bolt spell or a thrown Javelin make a complete U-turn right back at its user.

Would this work? I figured it would since Gust of Wind is powerful enough to push creatures away. What do you think?

The general rule is: things do only what they say. The spell description doesn’t say it turns back those things, so by RAW it does not.

That said, if I were DM, I might allow it to work against some things. If you want to use a 5th level spell to block an arrow, I’d probably allow it. 

Logically? Sure. Any wind that can push an adventurer 15ft is going to completely knock any projectile off course. Magic...depends on the rules of the system I guess. 

RAW? No. It makes no mention of it, so probably not. 

So speak to your DM. 

Everything else aside, you'd need to ready it since it requires an action to cast. By RAW it doesn't work, but as a DM I'd allow it. Not turning it back on the attacker, but deflecting an incoming projectile? Sure.

Warding wind explicitly affects ranged attacks, which means gust of wind would have the same wording if it was intended to have that effect. It's just a second level spell and it already does stuff that make it worth the slot IMO. Allowing it to grant a major defensive boost is pushing it balance-wise. Having the attacks hit the attacker instead? No way a 2nd level slot does that.

That being said, it certainly makes sense and I could see a lot of DMs favoring that rather than worrying too much about balance. But it would definitely be a houserule. Personally I'd probably say that it grants disadvantage to ranged attacks passing through the area if you upcast it with a 3rd level slot.