1) Apparent 2) Apparently suitable 3) Apt to happen 4) Credible 5) Expected 6) Expected to become or be 7) Feasible 8) Imagined 9) In the cards 10) Liable 11) More certain than not 12) Odds-on 13) Plausible 14) Possible 15) Potential 16) Predictable 17) Probable 18) Promising 19) Quite probable 20) With considerable certainty 1) Apt 2) Believable 3) Belike 4) Credible 5) Equiprobable 6) Imaginable 7) Liable 8) On the cards 9) Possible 10) Potential 11) Predictable 12) Presumed 13) Presumptive 14) Probable 15) Probably 16) Promising 17) Prone 18) Prospective 19) Reasonable 20) Usual 21) Verisimilar 22) Willing 
In probability of precipitation statements, the equivalent of a 60 or 70 percent chance.
• (a.) Worthy of belief; probable; credible; as, a likely story. • (adv.) In all probability; probably. • (a.) Having probability; having or giving reason to expect; -- followed by the infinitive; as, it is likely to rain. • (a.) Such as suits; good-looking; pleasing; agreeable; handsome. • (a.) Similar; like; alike. •...
In probability of precipitation statements, the equivalent of a 60 or 70 percent chance.
Like'ly adjective [ Compar. Likelier (līk'lĭ*ẽr); superl. Likeliest .] [ That is, like- like . See Like , adjective ] 1. Worthy of belief; probable; credible; as, a li...Like'ly adverb In all probability; probably. « While man was innocent he was likely ignorant of nothing that imported him to know.» Glanvill. 
In probability of precipitation statements, the equivalent of a 60 or 70 percent chance
[adj] - has a good chance of being the case or of coming about 2. [adj] - within the realm of credibility
adjective within the realm of credibility; `not a very likely excuse`
[Test terms] with considerable certainty; without much doubt[SAT terms] having a good chance of being the case or of coming about