The Linnets picked up a valuable three points in their battle to cement an end-of-season play-off spot at The Walks on Saturday.
Lynn began the brightest with Adam Marriott sending a curling shot wide within a minute of the action starting.
With only five minutes played Lynn had the lead after hitting the visitors on a quick break.
Hitchin were awarded a free-kick which was blocked with the ball falling to skipper Michael Clunan.
Clunan raced half the length of the pitch before picking out Marriott who controlled the ball before smashing an unstoppable drive beyond Tiernan Parker for his 18th goal of the season.
The howling gale blowing around the stadium all afternoon spoiled the game as a spectacle but aided Town who found themselves two goals to the good with only 12 minutes played.
Parker’s attempted high clearance became caught in the swirling wind and land at the feet of Jordan Richards on the edge of the Canaries' box.
Richards took his time before drilling a precise shot inside Parker’s right hand post and into the net.
The busy Parker then denied both Marriott and Chris Henderson in close succession as Lynn searched for a third goal that would have surely killed the game before the interval.
However the visitors had other ideas and just before the break Ezra Forde reduced the arrears with a stabbed finish following Dan Webb’s pull-back.
With just over an hour played, the Linnets increased their lead via Hitchin full-back Noah Chesmain who prodded the ball past his goalkeeper and into the net after being put under intense pressure by Ryan Fryatt inside his own box after a curled centre from the right.
Marriott again went close shortly afterwards but the Canaries reduced the deficit again with 20 minutes left when Jay Bird fired a low drive from fully 25 yards to beat Alex Street.
Lynn found themselves penned inside their own half for the final minutes of the game with Forde having a shot blocked by Street from close in and Jay Dowie shooting wide as the home side clung on to secure maximum points.