The 24-year old was previously with the Warriors, having been signed as a 20 year old by former manager Brown Ferguson.
However, after struggling for game time at Ochilview, he made the move to Carmuirs Park and has been a stand out in the East of Scotland Premiership.
Scoring 27 goals in 64 matches for the Mariners, Docherty makes the step back up to SPFL League 2 on a short term deal.
Stenny manager Davie Irons told their official website: “We have tracked Alan’s progress over the last two years and received a number of glowing reports.
“He has proven himself as one of the best attackers at that level and we look forward to seeing what we can add to our team.
"This loan gives him a chance to impress us head of next season."
An official statement from Camelon added: “The Club would like to wish Alan all the best.
"Alan had indicated to the Club on many occasion that he was ready to play at a higher level - his four goals and six assists this season plus his general attitude proved that.
"With the transfer window suspended by the SFA earlier this year it looked like Alan would need to wait that little longer.
"I think everyone will agree that this is a move that Alan has worked hard for and Camelon would not hold a player back from playing at a higher level.”
Docherty made his first appearance in Saturday’s 3-1 defeat to Edinburgh City as a second half substitute.