What is the difference between parametric weather insurance and weather event contracts?

The Crux Team · Published October 7, 2026 · Updated October 7, 2026

Both pay a set amount when a measured weather event happens, without a loss adjuster. Parametric weather insurance is a policy: an insurer collects a premium and pays when an independent measurement meets the trigger. A weather event contract is bought and sold on a CFTC-regulated exchange, which settles it under published rules and a named data source. Which costs less depends on the payout, how likely the event is, and each one’s own costs.

How do they compare?

Option	What it covers	How it pays	What you pay upfront	Main limit
Parametric weather insurance	An agreed weather measurement, such as rainfall or temperature, at an agreed place and time.	The insurer pays the set amount once an independent third party confirms the trigger.	An insurance premium, based on the payout and how likely the trigger is.	Not widely available yet. The fixed payout may not match your actual loss.
Weather event contracts bought yourself on an exchange	Contracts listed on a CFTC-regulated exchange, with set places, dates and thresholds.	The exchange settles each contract under its published rules and named data source.	The contract price, set by buyers and sellers, plus fees.	Only listed contracts are available. You choose, buy and manage them yourself.
Event contracts set up by Crux	Weather that can be measured, such as rainfall, snowfall or temperature, over a single day or a full season.	If the agreed event happens, the contract pays out under those terms. There are no loss adjusters.	An upfront cost. You see it before you approve anything.	Pays on the agreed station and dates, which may not match your actual loss.
Index-based weather futures and options (such as CME degree-day contracts)	Monthly or seasonal heating or cooling degree days for one of 13 listed U.S. cities.	Settles in cash on the degree-day index. A U.S. contract equals $20 times the index.	A premium for options, or a margin deposit for futures, plus fees.	A set list of cities and large contract sizes. Bought and sold through a broker.

Who pays out?

Parametric weather insurance: the insurer pays. You buy a policy and pay a premium. The insurer and the policyholder agree a set payout amount, and the insurer pays it when the trigger is met, California’s Assembly Insurance Committee explains.

Weather event contracts on an exchange: the exchange settles the contract. Each contract has a “yes” side and a “no” side. Under rules filed with the CFTC, the exchange settles the market and pays the holders according to the outcome, as in one Kalshi weather filing. The CFTC says that regulated exchanges and brokers do not take a side.

Event contracts set up by Crux: Crux arranges exchange-traded contracts. Crux is not an insurer or counterparty. You approve the protection through an account in your business’s name that we help you open. If the agreed event happens, the contract pays out under those terms.

How is the trigger measured?

Both pay on an independent measurement, not on a review of your loss.

Parametric insurance. The contract names the payout, the measurement and the third party that confirms the trigger, the NAIC says. California’s Assembly Insurance Committee says the trigger must be independently observed and objectively measurable.
Exchange event contracts. The rules filed with the CFTC name the data source and the weather station. In one Kalshi snowfall contract, the source is the National Weather Service, and each location is a single weather station. CME degree-day contracts settle on a degree-day index for a named city, according to CME Group.
Event contracts set up by Crux. The weather is measured at an agreed local weather station over agreed dates. Both are set in the terms before you commit. The payout follows the agreed weather measurement. There are no loss adjusters.

In each case, check where the measurement is taken. The weather at a station some miles away can differ from the weather at your site.

How fast is the payout?

Neither waits for a loss adjuster. For parametric contracts, payment can be made in a matter of weeks, against months or years for a standard indemnity contract, the NAIC says. An exchange contract pays when it settles, on the schedule in its published rules, as in one Kalshi weather filing. For event contracts set up by Crux, a payout follows the agreed event, so there’s no claims process.

Which is cheaper for small amounts?

No single answer fits every case. Each is priced in a different way.

Parametric insurance. California’s Assembly Insurance Committee says the premium is based on the fixed payout and the likelihood of the trigger. With no loss adjustment, the overhead costs of the policy are much lower. But premiums may be higher because of distribution and capacity costs.
Exchange event contracts. Buyers and sellers set the price, and it reflects their view of how likely the event is, the CFTC says. Fees and taxes also affect the cost. Each contract has a fixed payout, usually $1, so contracts come in small units.
Degree-day futures and options. Options cost a premium, and futures carry margin requirements, CME Group’s weather page notes. A U.S. contract equals $20 times the degree-day index, according to CME Group, so one contract can be worth thousands of dollars.
Event contracts set up by Crux. The cost depends on what you’re protecting, how much and for how long. You see the upfront cost before you approve anything.

To compare, get the upfront cost for the same trigger, location, dates and payout from each option.

A worked example

Extra rain days eat into your job margin. Your schedule can absorb 12 rain days. Protection pays for each rain day beyond that.

If April to June brings	Contract payout	What it means
10 rain days	$0	There is no payout. The $18,000 protection cost still applies.
17 rain days	$75,000	Helps carry payroll through 5 extra rain days.
22 rain days	$150,000	Helps carry payroll through 10 extra rain days.

Protection cost: $18,000 upfront

Using the agreed local weather station. Illustrative example. Terms and pricing agreed upfront.

What are the limits?

If the agreed event doesn’t happen, the contract doesn’t pay out, and the upfront cost isn’t returned.
The agreed event may not match your actual loss. A contract pays on the measured outcome, not on your own costs or sales. This gap is called basis risk.
The payout follows the contract terms and the agreed measurement source, such as a published price or a named weather station.
Exchange-listed weather contracts cover only the places, dates and thresholds the exchange lists.
Parametric weather policies are not widely available yet.
Neither one replaces property insurance against physical damage to buildings and equipment.

When is Crux not a fit?

A lender, landlord or customer contract requires an insurance policy. Parametric or traditional insurance is the better fit.
You want to choose and manage contracts yourself, and a listed exchange contract matches your location and dates.
Your loss comes from physical damage to property. Property and business interruption insurance are made for that.
The amount at risk is small enough to absorb from cash reserves.

Related guides

Sources

Parametric Insurance: What it is & the Role it Could Play (informational hearing background), California State Assembly Insurance Committee, October 9, 2024.
Parametric Disaster Insurance, National Association of Insurance Commissioners (NAIC), December 21, 2023.
KalshiEX LLC: CFTC Regulation 40.2(a) notification for a monthly new-snowfall contract, U.S. Commodity Futures Trading Commission (CFTC), December 1, 2025.
Understanding Prediction Markets and Event Contracts, U.S. Commodity Futures Trading Commission (CFTC), October 2026.
Overview of Weather Markets, CME Group, January 12, 2024.
Weather Products, CME Group, October 2026.

This guide is general education. It is not an offer, and it is not financial, legal or tax advice. Terms, prices and availability depend on the contract.