RIP. I went through this myself earlier last month, where it's blazing hot the previous month and then blazing hot + heavy rain very often for about two to three week, which all my tomatoes cracked. Now it's back to just blazing hot. Though the temp fluctuation isn't as crazy as yours.

[–] SchmidtGenetics@lemmy.world 2 points 4 days ago

I just planted everything outside after doing a hardening. Seasonal frost is “done”, but there’s always the risk.

This is nothing abnormal, even during the middle of winter the temps can swing 30c+ and be 20c while there’s a foot of snow.

Chinooks

A strong föhn wind can make snow one foot (30 cm)deep almost vanish in one day.[6] The snow partly sublimates[7] and partly melts and evaporates in the dry wind. Chinook winds have been observed to raise winter temperature, often from below −20 °C (−4 °F)to as high as 10–20 °C (50–68 °F) for a few hours or days, then temperatures plummet to their base levels.