WORCESTER City's survival surge continued at a cold, wet and blustery Nethermoor as they registered their fifth win in six games.
Aaron Brown headed the only goal of the game six minutes into the second-half to secure the points and condemn the home side to their third consecutive defeat.
Carl Heeley's in-form side are now up to 16th in the Skrill North table, nine points clear of the drop zone.
Both teams struggled to cope with a strong swirling wind and intermittent downpours on a sodden pitch that produced very little bounce and began to cut up as the game progressed.
Worcester set their stall out early with a game plan to stifle Guiseley’s free flowing football and they largely succeeded, although the home side were also guilty of failing to capitalise on the few chances they created.
First-half openings for the home side saw Danny Ellis’ goal-bound header cleared from the six-yard box by Tyler Weir and keeper Jose Veiga did well to hold on to Oli Johnson's follow-up.
For their own part, City made a lively start on the heavy surface with Daniel Nti cutting the ball across the penalty area only to find no takers and when Brown, Ebby Nelson-Addy and Ellis Deeney combined, the latter’s shot took a wicked deflection that nearly deceived Steve Drench in the Guiseley goal.
Danny Forrest replaced the injured Johnson at the restart for Guiseley and Veiga once again came to the visitors' rescue as he first parried Adam Boyes' shot and then gathered the loose ball before Forrest could intervene.
Worcester had perhaps their best spell of the game just after the break and scored the all-important goal on 51 minutes.
Weir’s cross from the right held up in the wind for Brown to deliver a powerful header beyond Drench into the far corner.
Brown nearly doubled the visitors’ lead when first he took advantage of Jake Lawler’s slip to shoot beyond the far post and then latched on to Weir’s free-kick only to see his shot whizz past the upright with Drench beaten.
Rhys Meynell replaced Ben Parker for Guiseley and Jamie Grimes was booked for bundling the lively Alex Johnson over before Ethan Moore and Steven Leslie combined in a nice one-two to force Drench into a save at the foot of the post.
When Alex Johnson’s shot took a deflection and looped just over the bar with 15 minutes remaining it signalled a concerted effort from the home side to restore parity. They forced a series of corners only to see Veiga make two point-blank stops and George Williams clear a Wayne Brooksby effort off the line.
The hosts' frustration was summed up with the last kick of the game when Meynell fired a free-kick way over the bar from 20 yards out.