Highest temperature in San Francisco on June 30?

Platform comparison

Market context

The real-world event is the highest temperature recorded at San Francisco International Airport on 30 June 2026, measured in degrees Fahrenheit and sourced from Wunderground. Current crowd-implied probability sits at 0% for a "Yes" outcome, suggesting traders expect the temperature to fall outside the specific range being wagered on, likely due to San Francisco’s famously mild June climate.

Historical data frames this probability clearly: June highs in San Francisco typically range between 65°F and 67°F, with the warmest day of the month averaging 72.7°F [2][7]. Comparable prediction markets from late June 2026 show maximum temperatures clustering around 67–68°F, reinforcing that extreme heat is rare in this coastal city [3][9]. The 0% probability likely reflects confidence that the temperature will not breach the upper threshold of the wagered range.

Traders should monitor daily National Weather Service climatological reports and any sudden shifts in marine layer coverage, which can suppress or elevate temperatures unexpectedly [1][5]. While no major weather announcements are scheduled for 30 June, dependencies include real-time Wunderground updates and potential regulatory shifts affecting prediction market accessibility. German GlüStV rules may restrict access for residents, whereas US CFTC reach permits broader participation; the "no-KYC up to $1,500" clause enhances accessibility for small traders but does not override jurisdictional limits [4]. These factors shape who can trade and how liquid the market remains.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This overview of Highest temperature in San Francisco on June 30? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.

Resolution & payout

On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.

FAQ

Is Polymarket legal in my country?

Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Germany Legal has a different geo footprint.

Can I trade anonymously?

Pseudonymously, yes — up to the KYC threshold. Polymarket Germany Legal stores an email address and wallet addresses rather than a legal name. Over $1,500 lifetime volume triggers KYC, after which identity is no longer anonymous.

Are prediction markets gambling?

Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.

Is there a withdrawal cap?

No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).

What if regulation changes?

If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket Germany Legal would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.