AsNoriuanswered grow question 2 years ago you on the top tolerance even for veg
vpd chart, if you cant hold temperatures, play with humidity
https://www.dimluxlighting.com/knowledge/blog/vapor-pressure-deficit-the-ultimate-guide-to-vpd/
i lived in static caravan, its tin can, sometimes had peaks up to 40 cel in flower, still made it .... for one , two weeks, they will make it with right humidity.
put two out and one in, will ventilate better, plants will have negative pressure, that will help too.
if have money, buy something serious one time. i spent 3x amount during career, till at every item i came to those "posh" one,
weed is resilient plant !
Happy Growing !