Weather Prediction Markets: A Complete Guide

What Are Weather Prediction Markets?

Weather prediction markets are exchange-traded contracts that let participants buy and sell positions on real-world weather outcomes — for example, whether a city's high temperature will exceed a specific threshold, how much rain will fall in a given week, or when the first measurable snowfall of the season will occur. Each contract resolves to a fixed payout based on what actually happens, settled against an official data source like a National Weather Service station.

Unlike traditional weather derivatives, which historically traded over-the-counter between large institutions, today's weather prediction markets are accessible to retail traders through regulated exchanges and prediction platforms. That shift has opened up a new asset class where individual traders can take positions on the same kinds of weather outcomes that businesses have been hedging for decades.

How Do Weather Prediction Markets Work?

Most weather prediction markets are structured as binary event contracts. A contract poses a clear yes-or-no question — for example, "Will the daily high in Chicago exceed 90°F on July 4?" — and traders take either side. Each contract typically settles at $1.00 if the event occurs and $0.00 if it does not.

The price of a contract between those endpoints reflects the market's implied probability of the event. A "Yes" contract trading at $0.65 means the market is pricing roughly a 65% chance the event will happen. Traders profit by buying contracts they believe are mispriced and selling them at a higher price before settlement, or by holding to expiration if their side is correct.

Settlement is tied to a specific weather station and data source. For U.S. temperature markets, that's usually a designated airport or observatory station — KMDW for Chicago Midway, KNYC for New York Central Park, KLAX for Los Angeles, and so on. Using an official station removes ambiguity about which reading determines the outcome.

Where to Trade Weather Prediction Markets

Several major exchanges and platforms now list weather prediction markets, each with its own focus and regulatory framework:

Kalshi — A CFTC-regulated event contract exchange in the U.S. with one of the deepest lineups of daily temperature markets, covering cities like New York, Los Angeles, Chicago, Miami, Houston, and Phoenix.
Polymarket — A global prediction market platform that lists weather contracts on cities around the world, including international markets in London, Tokyo, Beijing, Madrid, and dozens more.
Polymarket US — The U.S.-compliant version of Polymarket, focused on a smaller set of major American cities.
Interactive Brokers (IBKR) — Offers ForecastEx event contracts, including weather prediction markets across U.S. and international cities, accessible through the standard IBKR brokerage interface.
Robinhood — Has added weather prediction markets to its event contracts lineup, focused primarily on daily high temperatures in major U.S. cities.

You can browse the full list of cities and exchanges on the Wethr.net market index, which tracks every weather prediction market we cover across all five platforms.

Types of Weather Prediction Markets

Weather prediction markets come in several flavors, each tied to a different underlying measurement:

Daily high temperature markets — The most common contract type. Traders take positions on whether a city's daily high will land in a specific range or above/below a threshold.
Daily low temperature markets — Same structure as high-temperature markets but settled against the day's minimum reading.
Monthly average temperature markets — Longer-dated contracts that settle on the month's average temperature, often used for seasonal hedging.
Rainfall and snowfall markets — Contracts on whether precipitation totals exceed a given amount over a specified window.
First-snow and seasonal-event markets — Contracts that resolve based on when a specific seasonal event happens, such as the first measurable snowfall or the first 90°F day of the year.
Hurricane and severe-weather markets — Contracts on landfall, named-storm counts, or season totals during Atlantic hurricane season.

Who Participates in Weather Prediction Markets?

Retail traders and forecasters — Individuals who follow weather models and take positions when they believe the market is mispricing a forecast.
Businesses and hedgers — Companies in agriculture, energy, retail, construction, and travel use weather prediction markets to offset revenue risk tied to temperature, rainfall, or storm activity.
Quantitative traders — Funds and systematic traders who model weather data and arbitrage pricing differences across exchanges.
Weather enthusiasts — Hobbyist meteorologists and weather watchers who use prediction markets to put a dollar value on their forecasts.

Why Weather Prediction Markets Matter

Price discovery for weather risk — Markets aggregate forecasts from many participants, producing a real-time consensus probability for weather outcomes.
Accessible hedging — Small businesses that couldn't access institutional weather derivatives can now hedge directly on a regulated exchange.
Liquidity and transparency — Exchange-traded weather prediction markets publish bids, asks, and volume, making pricing far more transparent than legacy OTC contracts.
A new edge for forecasters — Anyone with a strong view on weather can express it directly through a tradable contract.

How to Get Started with Weather Prediction Markets

Pick an exchange — Choose between Kalshi, Polymarket, Polymarket US, IBKR, or Robinhood based on the cities you want to trade and the regulatory framework you prefer.
Open and fund an account — Each platform has its own onboarding process. U.S. traders typically have the smoothest experience on Kalshi, IBKR, Robinhood, or Polymarket US.
Study the underlying data — Identify the official station that settles your market (for example, KAUS for Austin or KMIA for Miami) and follow its forecasts and recent observations.
Start small — Place a small position to learn how the contract behaves as the settlement window approaches.
Track your edge — Compare your forecasts to the implied market probability and keep records of your accuracy over time.

If you want to see how a live weather prediction market behaves before committing real money, you can explore our free Tampa demo market — no account required.

Risks and Considerations

Weather prediction markets carry real risks, and traders should understand them before placing capital at stake:

Weather is genuinely unpredictable, and even high-confidence forecasts can miss.
Binary contracts have asymmetric outcomes — a contract bought at $0.80 still goes to zero if the event doesn't occur.
Liquidity varies by city and contract. Less popular markets can have wider bid-ask spreads.
Settlement rules and station data can occasionally produce unexpected outcomes (sensor outages, data revisions). Always read the contract specs carefully.
Only trade with funds you can afford to lose.

Frequently Asked Questions

Are weather prediction markets legal in the U.S.?

Yes. Kalshi operates as a CFTC-regulated designated contract market, and IBKR offers weather event contracts through its ForecastEx exchange. Robinhood and Polymarket US offer weather prediction markets under their respective compliance frameworks.

How are weather prediction markets settled?

Each contract specifies an official data source — typically a National Weather Service station or designated observatory — and settles automatically based on the published reading once the observation window closes.

What's the difference between weather prediction markets and weather futures?

Traditional weather futures (like CME's HDD/CDD contracts) are continuous-payout instruments aimed at institutional hedgers. Weather prediction markets are usually binary event contracts that pay a fixed amount on a yes/no outcome, making them more accessible to retail traders.

Can I hedge my business with weather prediction markets?

Yes — many small businesses use them to offset weather-driven revenue risk. The key is matching the contract's underlying station, threshold, and settlement window to the actual weather exposure your business faces.

Where can I see all available weather prediction markets?

The Wethr.net market index tracks every weather prediction market across Polymarket, Polymarket US, IBKR, Robinhood, and Kalshi in one searchable list.