Do I need an account to play?

No. You claim a username the first time you place a pick. There is no email, no password, and no signup form.

Which cities can I forecast?

Seventeen cities across Europe, North America, Asia, and Oceania, including Amsterdam, London, Paris, New York, Los Angeles, Tokyo, Singapore, Sydney, and Auckland. Each city runs separate markets for temperature, rain, wind, and thunderstorms.

Yes. Weather Markets is completely free. There is nothing to buy, no subscription, and no real money involved at any point.

Free Weather Prediction Game: Beat Tomorrow’s Forecast

Q: How is the weather prediction game settled?

Each market closes at local midnight, before its weather day, and settles the next morning against the Open-Meteo historical archive. If the data has not been published yet, the market waits and retries. No human decides the outcome.

Weather is the one thing everyone has an opinion about and nobody keeps score on. Weather Markets is a free weather prediction game that finally keeps score. Each day you make YES or NO calls on tomorrow's rain, wind, storms, and temperature, then come back after settlement to see whether you beat the forecast.

You start with 10,000 points, climb the leaderboard, and monthly winners can help choose a good cause for a site-funded donation. The point is simple: make a call before the weather happens, then let the archive keep you honest.

How the weather prediction game works

Every question is a simple forecast: will London top 24 degrees tomorrow, will Tokyo get more than 1mm of rain, will Sydney see a thunderstorm? You pick YES or NO. If your call turns out right, the shares you bought pay out. If it is wrong, they expire worthless. Your balance goes up or down depending on how sharp your forecasts are.

The points are worth nothing in real terms, and they stay leaderboard-only. That's on purpose. This is a game about forecasting, not a betting site, and we'd rather keep it fun than turn it into something you could lose your rent on.

How a single weather call works

Every question runs as its own small market with a live price. A price of 40 means the crowd currently puts the odds at about 40 percent. Price and probability are the same number here, which makes the whole thing easy to read. When you buy a side, the price drifts toward you, so being early and correct is worth more than piling in once everyone already agrees.

The flow goes like this:

Open today's slate of weather questions.
Choose YES or NO on temperature, rain, wind, or thunderstorm.
Pick a username only so the game remembers your points next time.
The market closes at local midnight, before the weather day has even started.
The next morning it settles, and the winning side gets paid 100 points per share.

We don't decide who won. Every market settles against the Open-Meteo historical archive, which is public, free, and the same record a meteorologist would check. If the archive says it rained, the rain markets pay out. Our job is to run the game and then stay out of the way.

The part that makes it interesting: beat the model

Here's the twist. The threshold for each question comes straight from the official forecast, so every market opens close to a coin flip. If the forecast says the high will land around 23.4 degrees, the temperature market asks whether it will clear 23.5. That means guessing the rough weather isn't enough. To win, you have to guess where the forecast is wrong.

Think the model is underrating a heatwave building over Madrid? Buy yes and see if you were right. Reckon that storm is going to fizzle before it reaches Miami? Take the other side. We started calling this "beating the model," and it turns out to be a lot more satisfying than refreshing a weather app.

Today's slate, then the whole world

The easiest way to play is today's slate: a small set of hand-picked weather calls you can make in a minute. If you want to go deeper, the full market list and city view let you browse Amsterdam, London, New York, Los Angeles, Tokyo, Singapore, Sydney, Auckland, and more.

The cities are spread across time zones on purpose. There is almost always a market about to close somewhere, whatever hour you happen to open the page.

Free, and nothing to sign up for

You don't make an account. You don't hand over an email address. The first time you place a pick you claim a username, and that's the whole of it. Everyone starts on the same 10,000 points, and the leaderboard ranks people by how much they've grown their balance, not by who got there first. A brand new player and someone who has been at it for weeks are judged the same way, on return.

If you want to try it, you can play today's Weather Markets slate here. Take a side on tomorrow, and find out whether you really do know better than the forecast.

Common questions

Is Weather Markets real-money gambling?

No. Every player uses points that have no cash value. Monthly winners can help choose a good cause for a site-funded donation, but players cannot cash out points. It's a forecasting game, not a betting service, and it isn't regulated as one.

How do you decide who wins?

You don't take our word for it, and neither do we. Each market closes at local midnight and settles the next morning against the Open-Meteo historical archive. If the data hasn't been published yet, the market waits and tries again. No human picks the outcome.

Do I need an account?

No. You claim a username the first time you make a pick. There's no email, no password, and no signup form to fill in.

Is it really free?

Yes. It costs nothing, there's nothing to buy, and there's no real money anywhere in it.