How bad is a few hours of hot temps

My plant is in flowering and my dumb ass forgot to turn the AC on before I left. Didn't notice it for maybe 3 or 4 hours. The temps got up to 89.6 at the peak. The temperature is now down in the 70s since I turned on the AC. The plant shows signs of heat stress. How bad is a few hours of high temps on the plant and what's the prognosis? I assume they'll be fine but will I see a yield drop?

ı grow my weed summers 91 F maybe more thats they can handle its gonna be ok dont worry. but its depents strain and co2 levels.