It was Patterson’s second Women’s National Cricket League ton for the season, the first coming in Round 1 against Western Australia.
The right-hander also struck her highest WNCL score, compiling 113 from 134 balls at Karen Rolton Oval.
An 88-run opening stand between Patterson and Eliza Doddridge (28) and important cameos from Wellington (29 from 25 balls) and Tegan McPharlin (19 from 38 balls) pushed the home side to 245.
The Meteors were off to a flying start in their chase, with danger player Claire Koski crunching 55 from 58 balls, before being bowled by Wellington (4/35 from 10 overs).
The loss of Koski in the 16th over sparked a mini collapse, with Wellington going on to dismiss the next three top-order batters in her following four overs.
A series of low-scores through the middle-order proved troublesome for the Meteors, with batters unable to replicate anything close to the opening partnership.
Hayley Jensen (18) and Maitlan Brown (20) did their best to recoup, but it was captain Megan Schutt (1/28) who eventually broke through to dismiss Jensen.
Tegan McPharlin was lightning-fast with the gloves, with three stumpings and a catch.
Katelyn Pope, Alex Price, Tahlia McGrath and Doddridge all took one wicket each, helping to dismiss the ACT for 198 in the 44th over.
The Scorpions unfortunately finished bottom of the WNCL table, with two wins and four losses.