The 30-year-old recently renewed a one-month loan deal at Gigg Lane, but boss Chris Casper was keen to use his experience for longer.
Warrington, who played in Tuesday night's 1-1 draw at home to Darlington, said: "I enjoyed it here in December when I was on loan, but then I got injured.
"They are a great set of lads, it's a great management team here, so I am really looking forward to it. I am here until the end of the season, so we will see where it goes from there."
The former York City keeper should keep his place for the visit of Lincoln on Saturday.
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