Highest temperature in NYC on June 21?

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Market context

LaGuardia’s official daily climate report for 21 June points to a high of 84°F and no significant weather, with sunshine and only light winds recorded through the day. That makes the market’s 0% yes price look detached from the latest realised conditions, because the contract settles on the highest temperature at LaGuardia Airport Station, not a citywide average or feels-like reading.[6][8]

Historically, late-June temperature markets at LaGuardia tend to cluster close to the low-to-mid 80s when skies are clear, with the June normal maximum at 83°F and the record at 98°F. Recent comparable New York temperature markets also leaned heavily into narrow 82–85°F or 74–75°F bands, suggesting traders often anchor to forecast highs unless there is a sharp synoptic shift.[6][2][3][5]

For the next move, watch whether the heat pattern broadens or fades in the mid-Atlantic and New England corridor, because that determines whether LaGuardia revisits the upper 80s or settles back towards seasonal norms. The most relevant inputs are the National Weather Service daily climate products for KLGA and the station history page used for settlement; AccuWeather’s June outlook currently shows daily highs spanning 74–88°F, which leaves room for either a solidly warm outcome or a cooler break if cloud cover or maritime flow increases.[1][6][8]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in NYC on June 21? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Prediction Today — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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