SimpleFunctions
Winner-take-all answer·10 source contracts·Kalshi 10·refreshed just now·Closes Jul 5, 2026 · 10d·1pp · 6h

Will the max temperature in Miami be above 75 degrees on Jul 4, 2026

Leader sits at 96% across 10 bound outcomes, runner-up at 94%. This is a winner-take-all market — the headline is the leader’s price, not an arithmetic mean.

Leader probability

96%

Washington DC

runner-up 94¢leader 96¢

Outcomes

10

winner-take-all

Runner-up

94¢

Chicago

Spread

2pp

contested

24h volume

$4K

modest

Closes

Jul 5, 2026

10 days

Venue

Kalshi

10 bound

30-day trend

0%50%100%-30d-3w-2w-1wtodayWashington DC: 80% on 2026-06-24Chicago: 78% (2 days, 2 points)Chicago: 78% on 2026-06-25Minneapolis: 92% (2 days, 2 points)Minneapolis: 92% on 2026-06-25
Washington DC80¢Chicago78¢Minneapolis92¢
Top 3 candidates by current price · 2d

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 contract estimates a 97% chance that Miami's maximum temperature will exceed 75°F on July 4, 2026. The high probability reflects historical weather patterns for South Florida in early July, when temperatures routinely exceed this threshold. Current market pricing suggests traders view this outcome as nearly certain, with comparable contracts for other major U.S. cities showing similarly high probabilities for southern locations (New Orleans and Oklahoma City both at 97%) and lower probabilities for northern cities like New York (86%) and Los Angeles (30%). The main factors affecting this estimate are typical summer heat patterns in South Florida and any exceptional cooling systems that develop in early July. Resolution occurs on July 4, 2026, when the National Weather Service reports Miami's official daily maximum temperature.

  • Miami's July average high temperature is approximately 90°F, making 75°F well below historical norms for the date
  • Market prices for New Orleans and Oklahoma City are also priced at 97%, suggesting consistency in regional heat expectations across southern U.S. locations
  • Northern cities like New York (86%) and Los Angeles (30%) show dramatically lower probabilities, indicating geographic variation drives pricing rather than uniform seasonal bias
  • The contract resolves based on National Weather Service official maximum temperature readings, eliminating ambiguity in measurement methodology
  • Nine days of lead time before resolution date allows weather models to substantially refine forecasts, potentially shifting probabilities if anomalous cooling patterns emerge

What moved the line

  • Jun 25Boston49pp7627¢ · Kalshi
  • Jun 25Los Angeles41pp6726¢ · Kalshi
  • Jun 25Minneapolis19pp7392¢ · Kalshi
  • Jun 25Denver16pp7389¢ · Kalshi
  • Jun 25Chicago15pp6378¢ · Kalshi

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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