This is looking like classic boron deficiency... a mild case.
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Although rare, a boron deficiency can severely compromise your marijuana plants. This is how to identify and treat a boron deficiency in cannabis.
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"Boron deficiencies usually occur when a plant is under-watered or subjected to low humidity. Boron deficiencies can mimic calcium deficiencies as both elements rely on each other to maintain overall plant health."
your plant
boron deficiency
Regarding temperature... seems you are just fine on that. So perhaps the tacoing is because of light avoidance... good thing to turn down the light on that side. The other plants are looking great.