Can I add a full storm to a sunny exterior shot?

Yes. A full weather change from sunny to stormy is one of FXbuddy's most dramatic capabilities. The prompt needs to cover the sky, the ambient light change, any precipitation, and the atmospheric visibility change: 'transform to a severe storm — dark cumulonimbus clouds, heavy rain, visibility reduced to 30m, cool grey ambient light, no sunlight anywhere in the frame, distant lightning visible in background.'

How do I add snow to a clip that was shot in summer?

Describe the full winter world — the snow needs to be everywhere the camera can see, not just falling from the sky: 'transform to a winter snowstorm — snow falling from above, existing ground surfaces covered in snow, trees bearing snow on branches, overcast white-grey sky. cool blue ambient light from the snow cover. muted desaturated palette.' Covering the ground surfaces in snow is what makes the transformation convincing.

Does a weather change work on interior shots?

For interior shots with visible windows, yes — you can change what's seen through the windows and shift the ambient light quality. For interior shots with no windows visible, a weather change has minimal visual impact. In that case, use a relighting prompt instead to shift the mood through light quality.

Can I show clearing weather — storm becoming sunny?

Yes. Describe the transitional state — weather rarely goes from full storm to full sun instantly, and the in-between state is often more cinematic: 'clearing weather after rain — storm clouds breaking from the right, shafts of sunlight beginning to break through on the left horizon. wet ground, puddles still present. hazy atmosphere from the evaporating rain.' This transitional state reads as post-storm without requiring the AI to show movement across the full clip.

How to Write AI VFX Prompts for Weather Changes

Weather changes are the most complete scene transformation FXbuddy can perform. Unlike relighting or sky replacement (which change one or two elements), a weather change affects the sky, the ambient light, the precipitation, the ground surfaces, the visibility, and the atmospheric tone simultaneously. That's why the prompt needs to describe all of those layers.

The most common failure in weather change prompts is describing only the primary weather element — "add snow" or "add a storm" — without the secondary consequences that make weather convincing. Snow without snow-covered ground looks wrong. A storm without reduced visibility and changed ambient light looks like a cloud overlay. Always think in terms of what weather does to the entire scene, not just what it adds to the sky.

Weather change prompts also benefit from describing the stage of the weather event: approaching storm (still some sun, dark clouds advancing), full storm (rain, reduced visibility, no sun), clearing storm (patches of sun, wet ground, dissipating clouds). Different stages create very different cinematic moods.

What FXbuddy needs in a weather change prompt

Weather type: storm, heavy rain, snow, blizzard, clearing after rain, fog, sandstorm, hail
Stage of weather: approaching, full intensity, clearing, aftermath
Sky state: cloud type and coverage, visibility to the horizon
Ground and surface changes: wet pavement, snow-covered, flooding, frost
Ambient light shift: cool grey storm light, flat overcast, post-storm clarity

5 example prompts you can copy

transform to a severe thunderstorm. heavy rain at a diagonal angle from the left. dark grey-black storm clouds covering the entire sky. visibility reduced — background elements obscured. cool grey ambient light throughout. puddles forming on the ground. distant lightning suggested in the clouds.

add a winter snowstorm to this exterior. heavy snowfall falling straight down. existing ground and surfaces covered in white snow. trees bare with snow on branches. flat white-grey overcast sky. cool blue ambient light from the snow. muted, desaturated palette across the frame.

clearing weather after heavy rain — storm breaking from the right horizon. shafts of warm afternoon sunlight beginning to break through the parting clouds on the left. wet ground still reflecting the sky. puddles everywhere. misty atmosphere from evaporating rain. hopeful, transitional mood.

approaching storm from the left — sunny right side of frame, dark storm clouds advancing from the left. contrast between warm sunlit right and dark storm-lit left. no rain yet. dramatic tension in the sky. wind suggested by slight atmospheric movement.

transform to a winter morning after overnight snowfall. clear sky, no precipitation. bright white snow covering all horizontal surfaces. strong angled winter sun from the right casting blue-grey shadows across the snow. cold, still, quiet atmosphere. highly saturated blue shadows.

Common mistakes

Weather without consequences: Rain without wet ground, snow without snow-covered surfaces, storm without reduced visibility — all look like overlays. Always describe what the weather does to every layer of the frame.
Forgetting the light change: Every weather state has a distinctive ambient light quality. Storm light is cool grey and flat. Snow light is blue-white and diffused. Post-rain light is sharp and clean. Omitting the light description produces generic weather.
Too much weather at once: "Add rain and snow and hail and wind and lightning" produces chaotic results. Pick one primary weather type and describe its secondary effects rather than stacking multiple weather events.
Interior clips: Weather change prompts are primarily designed for exterior clips. On interior clips with no window visible, skip the weather prompt and use relighting to achieve a stormy or overcast mood instead.

Tips for better weather change results

The most narratively useful weather states are often transitional — approaching storm, clearing rain, pre-dawn overcast — rather than full-intensity events. These in-between states create visual interest and dramatic tension that full storms can't match.
For horror and thriller genres, "approaching storm with the last warmth of sunlight disappearing" creates dread more effectively than "full storm," because the audience can see what's being lost.
Snow looks best when you describe the quality of winter sunlight, not just the presence of snow. Hard-angled winter sun casting deep blue shadows on snow is one of the most visually striking looks the AI can generate.
For documentary or news-style footage, "overcast grey storm sky, flat even light, no precipitation" adds a serious, reportage atmosphere without adding dramatic weather effects that might feel staged.
Describe the sound-world in your prompt if it helps you think through the visual: "the kind of still, dead quiet morning after heavy snowfall" primes the AI's interpretation of the aesthetic even though the output is visual-only.

Frequently asked questions

Can I add a full storm to a sunny exterior shot?: Yes. The prompt needs to cover the sky, the ambient light change, any precipitation, and the atmospheric visibility change: "transform to a severe storm — dark cumulonimbus clouds, heavy rain, visibility reduced to 30m, cool grey ambient light, no sunlight anywhere in the frame, distant lightning visible in background."
How do I add snow to a clip that was shot in summer?: Describe the full winter world: "transform to a winter snowstorm — snow falling from above, existing ground surfaces covered in snow, trees bearing snow on branches, overcast white-grey sky. cool blue ambient light from the snow cover. muted desaturated palette." Covering the ground surfaces in snow is what makes the transformation convincing.
Does a weather change work on interior shots?: For interior shots with visible windows, yes — you can change what's seen through the windows and shift the ambient light quality. For interior shots with no windows visible, use a relighting prompt instead to shift the mood through light quality.
Can I show clearing weather — storm becoming sunny?: Yes. Describe the transitional state: "clearing weather after rain — storm clouds breaking from the right, shafts of sunlight beginning to break through on the left horizon. wet ground, puddles still present. hazy atmosphere from the evaporating rain." This transitional state reads as post-storm without requiring the AI to show movement.

Related prompt guides

Water and Rain Prompts

Detailed rain and water VFX for specific precipitation needs.

Sky Replacement Prompts

Change the sky independently as part of a weather workflow.

Fog and Atmosphere Prompts

Atmospheric haze and mist to complement weather changes.

Also see the Weather and Atmosphere VFX effect page for a full workflow walkthrough.

Try these prompts in your next edit

FXbuddy is a Premiere Pro and After Effects plugin. Paste any prompt above and the weather-transformed clip drops onto your timeline in under 90 seconds.

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