The forecast in Connecticut is suddenly a lot less cloudy.

It’s Always Sunny in Philadelphia star Kaitlin Olson has been cast as the lead in Fox’s comedy pilot The Mick — on which she’ll also serve as co-executive producer, teaming up once again with Sunny EP Nick Frenkel and writers John and Dave Chernin, plus Oly Obst (Black Box).

The latter quartet will executive-produce the potential series, along with director Randall Einhorn (The Muppets, Wilfred).

Olson will play Mackenzie “Mickey” Murphy, described by the network as “a hapless mess, a wry-humored, hard-drinking, cigarette-smoking, living-large kind of gal, always ‘between’ jobs, and always broke. A scrappy survivor who’s run out of options, she decides to pay her rich sister a visit, hoping for a little handout. What she gets, instead, is a full-time baby-sitting gig, when her sister and husband are forced to flee the country” to avoid a federal indictment.

The logline for the Greenwich, Conn.-set series notes that Mickey will quickly learn “what the rest of us already know — other people’s children are awful.”