What happens when three meteorologists — who also happen to be sports fans — are yakking over lunch about the upcoming baseball season and how early spring weather conditions were looking to be on the cool, unsettled side?

Why, a web resource, of course, one that gives forecasts tailored to the Bronx (think Yankee Stadium) and Flushing (think Citi Field) — that also makes calls on the chance for game delays and postponements.

What are conditions for Friday afternoon’s Mets home opener against Philadelphia, as of late Thursday afternoon?

By the fifth inning: partly cloudy, a few scattered showers, temperatures near 50 degrees. The chances for delay? 10 percent.

That’s according to the SportsCast page, launched Tuesday on NYMetroWeather.com, to which, so far, “response has been overwhelmingly good,” says John Homenuk, 25, of Fanwood, New Jersey.

While in college he founded New York Metro Weather as a blog, and three years ago, with fellow weather geek Doug Simonian, 25, of Rockville Centre, launched it as a forecasting consulting firm. Clients include small-to-medium sized businesses, and there are weather enthusiasts who subscribe to their premium offerings.

As for detailed, hourly forecasts for game locations and times, that certainly can also be found on the likes of Accuweather.com and Weather.com.

advertisement | advertise on newsday

But the SportsCast feature is personalized for baseball fans, just as is done for their landscaping clients, Homenuk says. Included are weather conditions for estimated times of the first pitch, fifth inning, and ninth inning, along with a map showing traffic conditions for those heading to and from the games.

Their thinking on delays and postponements is based on their many years attending local baseball games, Simonian says. Fascinated with weather for most of their lives, they’re “very good at remembering weather patterns” and their associated effects on games. For them, that information has been “duly noted” and “it’s easy to store that in your mind.”

Plans are also underway for fans to be able to opt into email alerts each time the SportsCast feature is updated.

When it comes to their baseball leanings, Simonian, Homenuk and Miguel Pierre, 26, of Woodside, Queens, a third forecaster on their team, admittedly, all favor the Bronx Bombers.

That may give Mets fans cause to pause, but not to worry. Simonian says that as a die-hard baseball fan, he attended as many Mets games last year as Yankees. And as Homenuk puts it, they “are not biased when it comes to weather.”