Control Weather

8th-Level Transmutation
Casting Time: 10 minutes
Range: Self (5-mile radius)
Components: VSM (burning incense and bits of earth and wood mixed in water)
Duration: (C) 8 hours

You take control of the weather within 5 miles of you for the duration. You must be outdoors to cast this spell. Moving to a place where you don't have a clear path to the sky ends the spell early.

When you cast the spell, you change the current weather conditions, which are determined by the DM based on the climate and season. You can change precipitation, temperature, and wind. Make an ability check with your spellcasting ability modifier. It takes a number of minutes equal to 10 - half the result of your ability check (minimum 1) for the new conditions to take effect. Once they do so, you can change the conditions again. When the spell ends, the weather gradually returns to normal. When you change the weather conditions, find a current condition on the following tables and change its stage by one, up or down. When changing the wind, you can change its direction.

Stage	Condition
1	Clear
2	Light Clouds
3	Overcast or ground fog
4	Rain, hail, or snow
5	Torrential rain, driving hail, blizzard

Stage	Condition
1	Unbearable heat
2	Hot
3	Warm
4	Cool
5	Cold
6	Arctic cold

Stage	Condition
1	Calm
2	Moderate wind
3	Strong wind
4	Gale
5	Storm

At Higher Levels. When you cast this spell using a spell slot of 9th level, the duration is Concentration, up to 24 hours.

Source: PHB 228, SRD

Changelog

Added upcasting option.