According to TVGuide's report on the highest-paid TV actors (via Insider), Weatherly was pulling in $250,000 per episode at "NCIS" toward the end of his run on the show. Multiply $250,000 by roughly 24 episodes per season and add in any money he may have accrued from directing two further episodes of the show (per IMDb), and one can easily see how acting in "NCIS" contributed to Weatherly's current total net worth of $45 million reported by Celebrity Net Worth

While that's quite a lot of money, things possibly got even better for Weatherly when he landed his own series. Variety reports that Weatherly makes $300,000 an episode for leading the CBS procedural "Bull," though an updated report the next year listed only $175,000 as his salary. Either way, that's a lot of cash. The show generally produces around 20 episodes a season, and the actor has directed three episodes of the program so far. 

Architectural Digest also states that the actor has increased his bank account by renting out his Los Angeles home while filming in New York City for "Bull." The property pulls in $25,000 in rental fees per month for the actor, and the home itself is worth around $3.5 million (via Trulia). All in all, it's not a bad chunk of change for a working actor who started out in the soap opera world.