southern cali growers?

living in southern cali we get some extra warmth and sunshine way into october or so. i was wondering how long i am able to keep my plant outside. i had three plants during the summer but they all died within two months due to the 100 degree weather (i dont have air conditioning so keeping them inside the house was almost worse). i had two seeds left so i waited until september to plant them. i planted one seed that sprouted and is about 5 weeks old. i saved the other seed just in case. the one i planted is much taller and greener than the others were but the stem looks kinda week and pale. so if anyone has any advice on cali weather please help me out. i dont wanna be 0/4 on plant growing.

at five weeks old:
1. miracle grow (in red plastic cups)
2. standard kush seeds
3. 12/12 light scale
4. no nutes yet