Depends on how often you smoke. If you smoke very occasionally it will be out of your system within a few weeks after each time you smoke. Maybe only 5-7 days. If you smoke like just taking a hit or two it might not even show up, or the amount will be so low, it can't be used against you. If you smoke just occasionally it will be in for a few weeks until your system works the little bit out. If you smoke regularly you'll probably have it in your system for a month after you've smoked if not more. I knew someone who smoked daily for years, and had it in their system for months after not smoking. That's just my estimates. If you want more in depth answers try Erowid. Just type Erowid in on Google.
a month
about a week.
3
0 days
one week
It depends on the amount you smoke in one sitting, and the amount of THC in the weed you smoke. It also depends on how skinny you are.
Depends the quality of the weed if its good it could take hours if its swag wont take to long.
a month
about a week.
3
0 days
it will take about 31 days to get good weed out of your system naturally for a person over 200lbs
It takes about 7 to 13 month.
2 weeks
one week
Depending on the THC toxicity of the weed, no more than 2 weeks.
Usually 5 to 10 minutes.