Recent ensemble forecasts from sources like the Finnish Meteorological Institute and GFS models indicate a mostly cloudy pattern with westerly flow over southern Finland, supporting daytime highs near 19–21°C in Helsinki on August 9. Limited solar heating from overcast conditions and moderate winds are suppressing further warming, consistent with August climatology where average maxima hover around 20°C. Market-implied odds favoring 22°C as the mode reflect trader weighting of upper-end model runs amid typical forecast spread, while lower probabilities for 23°C+ or sub-21°C outcomes align with narrower uncertainty ranges in current guidance ahead of final observational data from official stations.
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 August 9?
Highest temperature in Helsinki on August 9?
22°C 56%
21°C 25%
23°C 19%
24°C 2%
NEW
$14,175 Vol.
NEW
$14,175 Vol.
Aug 9, 2026
18°C or below
<1%
19°C
1%
20°C
1%
21°C
25%
22°C
56%
23°C
19%
24°C
2%
25°C
1%
26°C
<1%
27°C
<1%
28°C or higher
<1%
22°C 56%
21°C 25%
23°C 19%
24°C 2%
NEW
$14,175 Vol.
NEW
$14,175 Vol.
Aug 9, 2026
18°C or below
$438 Vol.
<1%
19°C
$612 Vol.
1%
20°C
$607 Vol.
1%
21°C
$1,971 Vol.
25%
22°C
$4,826 Vol.
56%
23°C
$1,472 Vol.
19%
24°C
$1,752 Vol.
2%
25°C
$1,112 Vol.
1%
26°C
$589 Vol.
<1%
27°C
$427 Vol.
<1%
28°C or higher
$368 Vol.
<1%
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 9 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Recent ensemble forecasts from sources like the Finnish Meteorological Institute and GFS models indicate a mostly cloudy pattern with westerly flow over southern Finland, supporting daytime highs near 19–21°C in Helsinki on August 9. Limited solar heating from overcast conditions and moderate winds are suppressing further warming, consistent with August climatology where average maxima hover around 20°C. Market-implied odds favoring 22°C as the mode reflect trader weighting of upper-end model runs amid typical forecast spread, while lower probabilities for 23°C+ or sub-21°C outcomes align with narrower uncertainty ranges in current guidance ahead of final observational data from official stations.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 9 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 9 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Aug 7, 2026, 12:04 AM ET
Volume
$14,175End Date
Aug 9, 2026Market Opened
Aug 7, 2026, 12:04 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 9 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Recent ensemble forecasts from sources like the Finnish Meteorological Institute and GFS models indicate a mostly cloudy pattern with westerly flow over southern Finland, supporting daytime highs near 19–21°C in Helsinki on August 9. Limited solar heating from overcast conditions and moderate winds are suppressing further warming, consistent with August climatology where average maxima hover around 20°C. Market-implied odds favoring 22°C as the mode reflect trader weighting of upper-end model runs amid typical forecast spread, while lower probabilities for 23°C+ or sub-21°C outcomes align with narrower uncertainty ranges in current guidance ahead of final observational data from official stations.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 9 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 9 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Volume
$14,175End Date
Aug 9, 2026Market Opened
Aug 7, 2026, 12:04 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Recent ensemble forecasts from sources like the Finnish Meteorological Institute and GFS models indicate a mostly cloudy pattern with westerly flow over southern Finland, supporting daytime highs near 19–21°C in Helsinki on August 9. Limited solar heating from overcast conditions and moderate winds are suppressing further warming, consistent with August climatology where average maxima hover around 20°C. Market-implied odds favoring 22°C as the mode reflect trader weighting of upper-end model runs amid typical forecast spread, while lower probabilities for 23°C+ or sub-21°C outcomes align with narrower uncertainty ranges in current guidance ahead of final observational data from official stations.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions