Conjure frost, fire, lightening, earth...

Conjure frost, fire, lightening, and earth.

Does anybody know if these spells can stack?

Do they apply to ranged weapons as well?

Thank you,

Poppinjay

Aside from the requirement of having your weapon already deal a specific type of elemental damage to gain the respective bonus (fire weapon for Conjure Fire, etc.), each Conjure also has the effect of removing any enchantments already on you when you cast it. So no, there's no way to stack them.

Edit: Also, yes, they'll work on your bow. Once again, you need the element of your bow to match the conjure. Fiery bowstring upgrade (Or Greater Conflagration, as done in the pre-made template) for Conjure Flame, Shocking bowstring for conjure lightning, Icy bowstring (Or Greater Conflagration + Winter I'd imagine) for Conjure Frost.

Had always wondered how the people that'd actually use the templates for PvP used them back when Shock Sniper existed, and the Abominable Snowman had conjure frost, when primarily PvP chars most likely wouldn't even have unlocked the required upgrades to make use for them, but I digress.

Hope that answers everything.

It works for wands too.

The Elementalist Conjure Fire/Lightning/etc spells do not have the requirement that your weapon already have the element. Is it different for other classes? That actually makes little sense. If your weapon already does fire damage why would you need to cast Conjure Fire on it??

Yes they do.
The Conjure spells add extra elemental damage when your weapon deals that type of elemental damage already.