Hi mate, yeah the weather was crazy here too today-really damp and overcast in the morning, then sun, then hail and sleet showers. The temp has dropped significantly again tonight but it's not getting low enough to do any damage. Tbh the weather is just nuts year round now, I feel a bit sorry for the weather forecasters, must be like playing the lottery these days.
This is my first year trying autos outdoors, but I usually put a few photoperiod plants out and harden them off in the garden for a few days before transplant. It's a bit sketchy though as the garden is overlooked so I have to hide them.
This year we've bought a little cheapo polytunnel to grow some veg in, so they'll be able to hide in there for a few days before they go out. I am a little concerned the rhizopots they're in might be prone to chilling on those first forays into the cold, as they're pretty thin, but insulating them with some fleece shouldn't be a problem if it gets chilly in the tunnel.