One month before: learn the site
Walk the venue as if the weather has already turned. Find the firmest paths, the lowest ground, the safest shelter and the places where wind funnels between buildings or trees.
Ask the venue which conditions force a move or cancellation, who monitors warnings and what structures are approved. Put those answers into the schedule rather than relying on memory.
One week before: prepare every version
Confirm the wet layout, secure decorations, protect cables and decide where coats, umbrellas and muddy shoes will go. For heat, arrange shade and easy drinking water. For cold, shorten waiting times and provide a genuinely warm space.
Check supplier agreements before bad weather is imminent. Florists, musicians, caterers and rental teams may have equipment limits that decide the plan for you.
The day before: send one clear message
Tell guests what you know, what they should wear and where they should arrive. A useful message is calm and specific: ‘The ceremony remains outdoors; bring a layer and shoes suitable for damp grass.’
Avoid sending every forecast wobble. Choose one update time and one channel so nobody has to piece together the plan from five group chats.
On the day: watch conditions, not just icons
Look at local official forecasts and warnings, then watch what is happening at the site. Rain probability alone does not describe lightning, gusts, heat stress, flooding or dangerous travel.
If authorities, the venue or experienced suppliers tell you to stop or move, do it. No photograph, ritual or timetable is worth keeping people in hazardous weather.
The complete quick checklist
Confirm shelter, safe flooring, accessible routes, drainage, secured objects, protected power, drinking water, shade, warmth, transport, guest updates, supplier limits and the named decision-maker.
Then make room for the hopeful part. Send a free petition, light the safe little candle and ask for the sky you want — after the practical plan is already in place.