Finnish Meteorological Institute hourly forecasts for Helsinki on April 19, 2026, pinpoint a midday peak of 9–10°C around 14:00 at Helsinki-Vantaa Airport station—the market's resolution point—under clear skies and light north-easterly winds capping warming potential amid cool continental air masses. Observational data aligns, with early morning lows near -3°C rising steadily but plateauing below 11°C, consistent with April climatology where highs average 7–8°C but vary ±3°C due to shortwave ridging. Trader consensus at 100% on 10°C reflects this skin-in-the-game alignment with authoritative FMI model runs and real-time measurements, leaving negligible room for deviation. Only an improbable late-day adiabatic warming from sudden wind shear or measurement anomaly could push toward 11°C+, but evening cooling forecasts preclude it. Final airport observations expected post-midnight.
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 April 19?
Highest temperature in Helsinki on April 19?
10°C 100.0%
4°C or below <1%
5°C <1%
6°C <1%
$89,093 Vol.
$89,093 Vol.
Apr 19, 2026
4°C or below
No
5°C
No
6°C
No
7°C
No
8°C
No
9°C
No
10°C
Yes
11°C
No
12°C
No
13°C
No
14°C or higher
No
10°C 100.0%
4°C or below <1%
5°C <1%
6°C <1%
$89,093 Vol.
$89,093 Vol.
Apr 19, 2026
4°C or below
$2,865 Vol.
No
5°C
$1,326 Vol.
No
6°C
$1,609 Vol.
No
7°C
$4,534 Vol.
No
8°C
$6,043 Vol.
No
9°C
$35,428 Vol.
No
10°C
$9,961 Vol.
Yes
11°C
$10,228 Vol.
No
12°C
$7,037 Vol.
No
13°C
$4,035 Vol.
No
14°C or higher
$6,028 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 19 Apr '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.Finnish Meteorological Institute hourly forecasts for Helsinki on April 19, 2026, pinpoint a midday peak of 9–10°C around 14:00 at Helsinki-Vantaa Airport station—the market's resolution point—under clear skies and light north-easterly winds capping warming potential amid cool continental air masses. Observational data aligns, with early morning lows near -3°C rising steadily but plateauing below 11°C, consistent with April climatology where highs average 7–8°C but vary ±3°C due to shortwave ridging. Trader consensus at 100% on 10°C reflects this skin-in-the-game alignment with authoritative FMI model runs and real-time measurements, leaving negligible room for deviation. Only an improbable late-day adiabatic warming from sudden wind shear or measurement anomaly could push toward 11°C+, but evening cooling forecasts preclude it. Final airport observations expected post-midnight.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 19 Apr '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: Apr 17, 2026, 12:11 AM ET
Volume
$89,093End Date
Apr 19, 2026Market Opened
Apr 17, 2026, 12:11 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 19 Apr '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.Finnish Meteorological Institute hourly forecasts for Helsinki on April 19, 2026, pinpoint a midday peak of 9–10°C around 14:00 at Helsinki-Vantaa Airport station—the market's resolution point—under clear skies and light north-easterly winds capping warming potential amid cool continental air masses. Observational data aligns, with early morning lows near -3°C rising steadily but plateauing below 11°C, consistent with April climatology where highs average 7–8°C but vary ±3°C due to shortwave ridging. Trader consensus at 100% on 10°C reflects this skin-in-the-game alignment with authoritative FMI model runs and real-time measurements, leaving negligible room for deviation. Only an improbable late-day adiabatic warming from sudden wind shear or measurement anomaly could push toward 11°C+, but evening cooling forecasts preclude it. Final airport observations expected post-midnight.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 19 Apr '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
$89,093End Date
Apr 19, 2026Market Opened
Apr 17, 2026, 12:11 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Finnish Meteorological Institute hourly forecasts for Helsinki on April 19, 2026, pinpoint a midday peak of 9–10°C around 14:00 at Helsinki-Vantaa Airport station—the market's resolution point—under clear skies and light north-easterly winds capping warming potential amid cool continental air masses. Observational data aligns, with early morning lows near -3°C rising steadily but plateauing below 11°C, consistent with April climatology where highs average 7–8°C but vary ±3°C due to shortwave ridging. Trader consensus at 100% on 10°C reflects this skin-in-the-game alignment with authoritative FMI model runs and real-time measurements, leaving negligible room for deviation. Only an improbable late-day adiabatic warming from sudden wind shear or measurement anomaly could push toward 11°C+, but evening cooling forecasts preclude it. Final airport observations expected post-midnight.
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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