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icon for Highest temperature in Helsinki on May 17?

Highest temperature in Helsinki on May 17?

icon for Highest temperature in Helsinki on May 17?

Highest temperature in Helsinki on May 17?

May 15

May 16

May 17

May 15

May 16

May 17

17°C 29%

16°C 27%

15°C 15%

18°C 10.0%

Polymarket
NEW

17°C 29%

16°C 27%

15°C 15%

18°C 10.0%

Polymarket
NEW

9°C or below

$335 Vol.

<1%

10°C

$265 Vol.

<1%

11°C

$65 Vol.

1%

12°C

$202 Vol.

1%

13°C

$30 Vol.

6%

14°C

$430 Vol.

7%

15°C

$156 Vol.

15%

16°C

$59 Vol.

27%

17°C

$402 Vol.

25%

18°C

$34 Vol.

10%

19°C or higher

$221 Vol.

8%

This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 17 May '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Helsinki Vantaa Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve to "Yes" until all data for this date has been finalized. The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market. Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Trader consensus prices a 50% implied probability for Helsinki's May 17 high reaching 19°C or higher, driven by the latest Finnish Meteorological Institute (FMI) forecasts showing a warming trend under a high-pressure ridge over Scandinavia, with southerly winds advecting milder continental air and light winds minimizing cooling. Current May 15 observations logged around 14°C amid partly cloudy skies, up from cooler early-May norms, while ensemble models like ECMWF indicate consensus highs near 17-18°C but with an upper tail to 20°C+ under optimal solar heating and low cloud cover. Probabilities cluster evenly in the 15-18°C range (19-20.5%) reflecting model spread from Baltic sea-breeze moderation and residual shower risks. New FMI and ECMWF updates expected twice daily through May 16 could refine trajectories ahead of official Helsinki-Vantaa station measurements resolving the market.

This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 17 May '26.

The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Helsinki Vantaa Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.

To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.

This market can not resolve to "Yes" until all data for this date has been finalized.

The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.

Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Volume
$2,198
End Date
May 17, 2026
Market Opened
May 15, 2026, 12:06 AM ET

Resolution Source

https://www.wunderground.com/history/daily/fi/vantaa/EFHK
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 17 May '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Helsinki Vantaa Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve to "Yes" until all data for this date has been finalized. The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market. Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 17 May '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Helsinki Vantaa Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve to "Yes" until all data for this date has been finalized. The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market. Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Trader consensus prices a 50% implied probability for Helsinki's May 17 high reaching 19°C or higher, driven by the latest Finnish Meteorological Institute (FMI) forecasts showing a warming trend under a high-pressure ridge over Scandinavia, with southerly winds advecting milder continental air and light winds minimizing cooling. Current May 15 observations logged around 14°C amid partly cloudy skies, up from cooler early-May norms, while ensemble models like ECMWF indicate consensus highs near 17-18°C but with an upper tail to 20°C+ under optimal solar heating and low cloud cover. Probabilities cluster evenly in the 15-18°C range (19-20.5%) reflecting model spread from Baltic sea-breeze moderation and residual shower risks. New FMI and ECMWF updates expected twice daily through May 16 could refine trajectories ahead of official Helsinki-Vantaa station measurements resolving the market.

This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 17 May '26.

The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Helsinki Vantaa Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.

To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.

This market can not resolve to "Yes" until all data for this date has been finalized.

The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.

Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Volume
$2,198
End Date
May 17, 2026
Market Opened
May 15, 2026, 12:06 AM ET

Resolution Source

https://www.wunderground.com/history/daily/fi/vantaa/EFHK
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 17 May '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Helsinki Vantaa Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve to "Yes" until all data for this date has been finalized. The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market. Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.

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Frequently Asked Questions

"Highest temperature in Helsinki on May 17?" is a prediction market on Polymarket with 11 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "16°C" at 27%, followed by "17°C" at 25%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 27¢ implies that the market collectively assigns a 27% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

"Highest temperature in Helsinki on May 17?" is a newly created market on Polymarket, launched on May 15, 2026. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "Highest temperature in Helsinki on May 17?," browse the 11 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Highest temperature in Helsinki on May 17?" is "16°C" at 27%, meaning the market assigns a 27% chance to that outcome. The next closest outcome is "17°C" at 25%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Highest temperature in Helsinki on May 17?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.