You know what? Let it rain. Let the skies open up in the morning — steady, drenching; nothing calamitous, nothing dangerous — and let it last for a while, a good old October storm. If need be, maybe Crash Davis and a few buddies can sneak into Yankee Stadium when no one’s looking and turn on the sprinkler system.

The Yankees need a breather. They need a blow. Mostly, they could use the break of being able to hand the ball to Masahiro Tanaka on full rest before this American League Championship Series can stretch even a few inches farther away from them. A well-timed dousing Wednesday would be just what the doctor (of meteorology) ordered.

“Doesn’t matter to us,” Aaron Judge said. “We’ll be ready to play whenever they tell us to play.”

The problem is, after dropping a 4-1 game to Gerrit Cole and the Astros on Tuesday, all that stands between the Yankees and a 3-1 deficit in this best-of-seven series (with Zack Greinke, Justin Verlander and Cole — two Cy Young Award owners and this year’s presumptive winner if you’re keeping score at home — waiting in Games 5, 6 and 7) is a bullpen game Wednesday. That’s a roll of the dice.

The Yankees can’t afford to see if those dice are hot or not. They are two games from winter, 48 hours after they were achingly close to a mini-sweep in Houston. The schizophrenic nature of a short series has already crested and cratered in front of the Yankees, and they could use a break. They could use a cloudburst.

They could use a little dash of mojo.

“We’re ready to win,” said Aaron Hicks, who walked twice off Cole, making a return to the starting lineup for the first time in more than two months. “We just have to stick to our plan and keep doing what we do.”

So often this year, that blueprint included humbling even behemoth pitchers like Cole, now 19-0 with a 1.59 ERA since May 22, who looked vulnerable right from the start, when he allowed the first two hitters (DJ LeMahieu and Judge) to reach on singles and had to squirm from a bases-loaded pickle.

Three times in the first five innings, the Yankees had multiple runners on the basepaths and could never cash in on all that traffic. Judge struck out to end the second. In the fifth, Didi Gregorius barreled one up that looked for a few tense seconds to have enough to clear the wall (and, if you believe in conspiracies, would’ve had enough to reach the second deck with the regular-season ball) but died a few inches shy.

(Maybe Jeffrey Maier could’ve helped there … but Maier is 35 years old now and lives in New England, alas.)

As we said: Much mojo is needed. And quick.

“I didn’t come through,” Gregorius said of his two chances to do damage with a total of five runners aboard. “That’s what’s frustrating to me.”

Said Brett Gardner: “We had them on the ropes a couple of times. And we let them go.”

The mathematics of this series insist that the Yankees must beat either Cole or Justin Verlander at least once in the four times they might face them. The good news: Neither looked especially bulletproof in the 13 ²/₃ innings they pitched; the Yankees have to believe they can break through against them.

The bad news? Neither looked especially bulletproof in the 13 ²/₃ innings they pitched; the Yankees could’ve gotten to either, or both. They got neither.

And now they look to the skies.

“We’ll be fine,” Judge said. “I really believe that.”

“We don’t care where we play,” Hicks said. “We’ll be ready.”

It really can all change this quickly, can turn upside down in such a hurry. The Yankees won Game 1, and it felt like taming the meanest badlands in Texas, taking a game at Minute Maid Park. They led Game 2 one out into the fifth inning. They had home-field, and were reaching for a vice grip …

And in a blurry haze, George Springer and Carlos Correa homered to wreck Sunday, and then Jose Altuve and Josh Reddick homered to help ruin Tuesday, and if the Yankees aren’t quite facing a must-win just yet, they may well be facing a must-rain, instead.

Of course the Yankees can win while backtracking toward the abyss, because they’ve won in 107 (and counting) different and not-always-conventional ways this year. They are good enough to beat great pitching, and tough enough to win with the clock ticking, and resilient enough to fear no deficit, in runs or games.

They just have to get around to doing that, all of that, as soon as possible. As Crash told Nuke all those years ago: “Sometimes you win, sometimes you lose, sometimes it rains.” The Yankees could use two of those three outcomes Wednesday.