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Highest temperature in Helsinki on May 30?

Market price history

Rolling 7-day window of market YES price with the OU fair-price range overlay.

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Market price
23°C100¢
17°C★ BEST0¢
25°C or higher0¢
15°C or below0¢
20°C0¢
18°C0¢
22°C0¢
16°C0¢
19°C0¢
21°C0¢
24°C0¢
Polymarket • Volume: $42.2K • Updated 1h agoCloses: 2026-05-30
Polymarket · Climate and Weather
OU's Pick
YES · 17°C
at 0¢
Price gap
Polymarket0¢
→
OU's fair0¢
Confidence
Low

Historical May averages for Helsinki center around 16°C but recent early summer heatwaves frequently push daily highs toward the high teens or low twenties.

High volume$27k
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