WeatherToggle

Press J (configurable) to switch PEAK's weather off. Press again to switch it back on, and everything can happen again as normal.

While weather is off:

Effect	What happens
Tropics rain	No wetness/slipperiness, rain visuals and sound fade out
Alpine blizzard / cold wind	No cold, no push, snow visuals fade out
Roots wind	No push, wind visuals fade out
Mesa sun heat	No heat from standing in sunlight
Mesa tornadoes	No pull/fling/shake, tornadoes hidden and silent; as host none spawn and existing ones die out
Rising fog (every level)	No cold from it, fog wall hidden, "The fog rises" banner hidden
Rising gloom (Temple)	No drowsiness from it, banner hidden
Rising lava (Kiln)	Can't start while you're host; banner hidden
Gloom haze	Made more transparent (configurable amount)

One key controls all of it. Each effect can be excluded from the toggle in the config.

Multiplayer

Works as a non-host: everything above only changes your game (you don't get rained on, frozen, heated, thrown by tornadoes or chilled by the fog, and you don't see them). Other players are unaffected and don't need the mod.
As the host (AffectLobbyAsHost = true, default): the rising fog/gloom/lava is also held back and tornadoes stop spawning for the whole lobby while your weather is off. It resumes normally when you switch weather back on. Set AffectLobbyAsHost = false to keep it personal.
Rising fog/gloom/lava can't be held back by a non-host: it still advances in the world (and lava still hurts), you just aren't affected by the fog/gloom itself.

BepInEx/config/xtyob.weathertoggle.cfg (or the mod manager's Config editor), created on first launch.

Section	Setting	Default	Notes
Controls	Key	`J`	Unity Input System key name, e.g. `F3`, `Backquote`, `Numpad1`
Controls	StartWithWeatherOff	`false`
Controls	ShowIndicator	`true`	"Weather OFF" note in the top-right
Weather	Rain / AlpineColdWind / RootsWind / MesaSunHeat / MesaTornadoes / RisingFog / RisingLava	`true`	Which effects the key switches off
Weather	GloomSleepiness	`false`	Also block drowsiness from the Gloom biome's normal haze
Weather	AffectLobbyAsHost	`true`	See Multiplayer
GloomHaze	Transparency	`0.35`	0 = unchanged, 1 = haze gone
GloomHaze	ApplyAlways	`false`	Thin the haze even while weather is on
GloomHaze	ShaderProperties	`HeightFogAmount`	Advanced