Dread Weather

Change the weather in the area around you to one of three options:

Overcast: Clouds form blocking out the sky. It begins raining lightly.  Fire spells do half damage. 

Foggy: A dense fog rolls into the area. Visibility is dropped to 15 feet. All ranged attacks are made with disadvantage. 

Ash: Ash begins to fall from the sky. The particles make the air thick and hard to breath. Every hour inside the Ash cloud creatures must make a DC 12 Constitution Saving Throw or suffer 1d4 points of exhaustion.

The spell lasts for 1d6 hours and has a range of 1d10 miles.