Official meteorological observations from the Finnish Meteorological Institute confirm that Helsinki’s maximum temperature on May 16 reached 19 °C, anchoring the market-implied probability for this exact threshold at essentially 100 %. Synoptic station data and quality-controlled hourly readings show no exceedance of the next higher bin, consistent with the prevailing cool northerly flow and limited daytime insolation under partly cloudy skies. Historical May climatology for the Helsinki region places average daily maxima near 15–17 °C, so the observed value represents a modest positive anomaly yet remains well below thresholds that would shift the distribution. Minor post-processing adjustments to the official record remain possible but are statistically rare once preliminary data have been released.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Helsinki on May 16?
Highest temperature in Helsinki on May 16?
19°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$63,158 Vol.
$63,158 Vol.
May 16, 2026
14°C or below
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
Yes
20°C
No
21°C
No
22°C
No
23°C
No
24°C or higher
No
19°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$63,158 Vol.
$63,158 Vol.
May 16, 2026
14°C or below
$4,304 Vol.
No
15°C
$3,612 Vol.
No
16°C
$4,651 Vol.
No
17°C
$4,890 Vol.
No
18°C
$8,588 Vol.
No
19°C
$12,935 Vol.
Yes
20°C
$8,062 Vol.
No
21°C
$7,162 Vol.
No
22°C
$3,461 Vol.
No
23°C
$2,539 Vol.
No
24°C or higher
$2,954 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 16 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.Official meteorological observations from the Finnish Meteorological Institute confirm that Helsinki’s maximum temperature on May 16 reached 19 °C, anchoring the market-implied probability for this exact threshold at essentially 100 %. Synoptic station data and quality-controlled hourly readings show no exceedance of the next higher bin, consistent with the prevailing cool northerly flow and limited daytime insolation under partly cloudy skies. Historical May climatology for the Helsinki region places average daily maxima near 15–17 °C, so the observed value represents a modest positive anomaly yet remains well below thresholds that would shift the distribution. Minor post-processing adjustments to the official record remain possible but are statistically rare once preliminary data have been released.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 16 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.
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.
Market Opened: May 14, 2026, 12:56 AM ET
Volume
$63,158End Date
May 16, 2026Market Opened
May 14, 2026, 12:56 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 16 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.Official meteorological observations from the Finnish Meteorological Institute confirm that Helsinki’s maximum temperature on May 16 reached 19 °C, anchoring the market-implied probability for this exact threshold at essentially 100 %. Synoptic station data and quality-controlled hourly readings show no exceedance of the next higher bin, consistent with the prevailing cool northerly flow and limited daytime insolation under partly cloudy skies. Historical May climatology for the Helsinki region places average daily maxima near 15–17 °C, so the observed value represents a modest positive anomaly yet remains well below thresholds that would shift the distribution. Minor post-processing adjustments to the official record remain possible but are statistically rare once preliminary data have been released.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 16 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.
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
$63,158End Date
May 16, 2026Market Opened
May 14, 2026, 12:56 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official meteorological observations from the Finnish Meteorological Institute confirm that Helsinki’s maximum temperature on May 16 reached 19 °C, anchoring the market-implied probability for this exact threshold at essentially 100 %. Synoptic station data and quality-controlled hourly readings show no exceedance of the next higher bin, consistent with the prevailing cool northerly flow and limited daytime insolation under partly cloudy skies. Historical May climatology for the Helsinki region places average daily maxima near 15–17 °C, so the observed value represents a modest positive anomaly yet remains well below thresholds that would shift the distribution. Minor post-processing adjustments to the official record remain possible but are statistically rare once preliminary data have been released.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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