What is the ideal temperature for my little grow cupboard? I have about 1 1/2 ft by 3 ft...

Temp has been getting up to 100 on hot days with the cupboard shut...

any suggestions?

thanks in advance

100 deg F is way too hot !!
Usually like to see 65/dark & 85/light and thats at the upper end.
They will grow in hotter temps, just not as well.

65 low/85 high sounds good to me. Pics would be good. Sounds like you need more air flow. Also you should be drawing away the hot air from your light by some means. Make sure the inlet for fresh air is near the floor. You might need to have ventilation running 24 hours. Hope these very basic suggestion can help. I'll keep my eye out for some pics.

Thanks for the words ... I will be adding some pics here shortly...I actually do have an 8 inch fan on the side blowing in and the same 8 inch fan used as an exhaust...put them outdoors and the temp has dropped significantly... Seems like the best I can do temp wise is about 82-85 degrees....suggestions?

Thanks again..