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OpenPower · Cooling demandWeather index future · simulation

Miami cooling degree days · Week 47 · Nov 16 - Nov 22

Cooling degree days at KMIA · 7 local days, 2026-11-16 to 2026-11-22 · trading closes 11-22 05:00 (8 d)

Market index
47.1°C-days
Long 56.2¢ · Short 43.8¢ per share
Model fair
45.6 ± 10.0
priced 23 min ago
Edge
-1.5
fair minus market
Volume
232
9 traders
Open interest
362 / 87
long / short shares
5 · long pays 0long pays 1 · 80
Market 47.1Model fair 45.6
Listed at 42.0 · quoted by a market maker, no order book · one share moves 0.0133 sUSDT per index point

How the index builds, day by day

Forecast

Each bar is one local day's contribution to the index. Days with a final NWS climate report count as they stand (shown as final record); a day whose report is not out yet uses the METAR figure and is marked not final; the rest are the model's estimate, with a whisker one standard deviation either way.

081511-1611-1711-1811-1911-2011-2111-22
Day-by-day table
DaySourceHighLowCDDRunning total
Mon, Nov 16Forecast78.6°F70.9°F5.7 ± 1.95.7
Tue, Nov 17Forecast77.9°F73.0°F6.1 ± 2.011.9
Wed, Nov 18Forecast78.8°F72.9°F6.3 ± 2.218.2
Thu, Nov 19Forecast79.2°F74.1°F6.8 ± 2.425.0
Fri, Nov 20Forecast80.4°F75.0°F7.4 ± 2.632.4
Sat, Nov 21Forecast82.6°F72.7°F7.4 ± 2.839.8
Sun, Nov 22Forecast81.1°F68.5°F5.8 ± 3.045.6

Market index path

one step per trade · dashed line: model fair now
37.244.451.6

Recent trades

TimeTradeSharesAmountAvg price
11-13 13:50Buy long37.8521.0855.7¢
11-13 08:50Buy long27.4715.0854.9¢
11-13 06:50Buy short39.0017.5445.0¢
11-12 23:50Buy long47.9826.3554.9¢
11-12 20:50Buy long18.289.8954.1¢
11-12 16:50Buy long108.1056.7852.5¢
11-12 09:50Buy long89.8744.9850.1¢
11-12 06:50Buy short20.7410.5450.8¢
11-12 01:50Buy short27.0413.5850.2¢
11-12 00:50Buy long32.2216.0249.7¢

Settlement

KMIA is a US station, so this contract settles on the NWS daily climate report (CLI) of each of its 7 days: the index is the sum built from the high and low the National Weather Service prints. The local forecast office issues each report after local midnight, normally within one to three hours, and the contract settles one day after the last report is issued - about 11-24 07:00. A corrected report replaces the earlier one and the day runs again from it. If any day has no final report three days after the period ends, the contract is void and every position is refunded at cost. NWS CLI Watch ↗

Contract specification

Symbol
CDD-KMIA-26W47
Index
Cooling degree days (CDD), in °C-days
Formula
max(0, (high + low) / 2 - 18), summed over the period
Station
KMIA · Miami
Period
Week 47 · Nov 16 - Nov 22 · 7 local days, 2026-11-16 to 2026-11-22
Band
5 to 80
Payoff
Long: (index - 5) / 75 sUSDT per share, held to 0..1. Short: 1 minus that.
Point value
0.0133 sUSDT per share per index point
Trading closes
2026-11-22 05:00 UTC
Settles
One day after the NWS climate report for the last day is issued
Settlement source
The NWS daily climate report (CLI) of each day, as carried by the Weather Market oracle
Hedges
Power - Electricity, LNG for power (the exposure it hedges; this contract settles on the index)
Trade CDD-KMIA-26W47

Long gains if CDD finishes above the level you pay for.

Virtual sUSDT only. No monetary value.

Rules in short
  • Long gains when the index finishes higher, short when it finishes lower. A long and a short share together always pay 1 sUSDT.
  • Outside the band 5 to 80 the contract pays as if the index had finished on the edge.
  • You pay in full when you buy. What you paid is the most you can lose: no margin, no liquidation.
  • You can sell back to the market maker at any time before trading closes, when the last day of the period begins.
  • A US station: the index is built from the high and low in the NWS daily climate report of each day, and the contract settles a day after the last of those reports is issued. Void, with every position refunded at cost, if any day has no final report three days after the period ends.
Full rules →