SimpleFunctions
Winner-take-all answer·4 source contracts·Kalshi 4·refreshed just now·Closes Jul 9, 2026 · 0d

Will the maximum temperature be 80-81° on Apr 21, 2026

Leader sits at 45% across 4 bound outcomes, runner-up at 31%. This is a winner-take-all market — the headline is the leader’s price, not an arithmetic mean.

Leader probability

45%

87° to 88°

runner-up 31¢leader 45¢

Outcomes

4

winner-take-all

Runner-up

31¢

89° to 90°

Spread

14pp

contested

24h volume

$4K

modest

Closes

Jul 9, 2026

0 days

Venue

Kalshi

4 bound

Bracket family

How the bracket ladder is priced.

Each row is one outcome on the venue. Sorted by 24h volume — the heaviest book is at the top.

Analysis

This market estimates the probability that the maximum temperature in a specific location will reach 90–91°F on June 21, 2026, currently priced at 54% on Kalshi. The 54% probability reflects traders' view that this temperature range is slightly more likely than not, though substantial uncertainty remains. Temperature outcomes depend on seasonal weather patterns, local climate conditions, and any anomalies occurring in June. The main drivers of this probability are historical temperature data for that date and time of year, plus current climate forecasts as they become available closer to June 21. Resolution occurs when the actual maximum temperature is recorded; if it falls within the 90–91°F band, the contract settles at full value. Traders are also pricing alternatives ranging from below 88°F (3%) to 94–95°F (3%), suggesting mild consensus around the 88–91°F range with a median outcome near 90°F.

  • The 54% price for 90–91°F is the highest among five mutually exclusive outcomes, with 88–89°F at 20% and all temperatures above 92°F totaling roughly 15%
  • Historical climatology for June 21 in this location and recent trend data would inform whether 90–91°F represents a typical, above-average, or below-average maximum
  • Current seasonal weather forecasts (available weeks to days before June 21) directly influence contract repricing; any heat wave or cooling pattern warnings would shift probability mass between bins
  • The 24-hour trading volume ($439 on the leader contract) is concentrated on the 90–91°F outcome, suggesting active disagreement or limited price discovery rather than consensus
  • All five outcomes are live contracts, meaning traders can express directional views: betting on hotter days (92°F+) or cooler days (<88°F) requires selling the 90–91°F contract

Recently closed in climate

These markets stopped trading. Last odds and any captured outcome are shown above — full settlement detail lives at the venue.

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How we compute these odds

SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.

For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.

Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.

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