**Current short-range forecast guidance from the Finnish Meteorological Institute and global models (ECMWF, Met Office) indicates a daytime maximum near 20–22 °C in Helsinki on 15 August, consistent with late-summer climatology where average highs decline from ~21 °C early in the month toward 18–19 °C by month-end.** Partly cloudy to overcast skies with light showers or sprinkles are expected under moderate southwesterly flow, limiting strong solar heating while preventing rapid overnight cooling. This places the most probable outcomes in the 19–22 °C range, where small differences in cloud timing, boundary-layer mixing, or localized sea-breeze effects can shift the recorded high by 1–2 °C. Model consensus is relatively tight at this 48-hour lead time, yet inherent uncertainty in convective timing and exact wind speeds keeps adjacent buckets (18 °C through 23 °C) competitive in trader pricing. Updated 12–00 UTC model runs and FMI nowcasts will be the key near-term catalysts.
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 15?
Highest temperature in Helsinki on August 15?
22°C 27%
23°C 25%
21°C 12%
20°C 11%
NEW
NEW
Aug 15, 2026
17°C or below
1%
18°C
2%
19°C
10%
20°C
11%
21°C
12%
22°C
27%
23°C
25%
24°C
10%
25°C
6%
26°C
1%
27°C or higher
1%
22°C 27%
23°C 25%
21°C 12%
20°C 11%
NEW
NEW
Aug 15, 2026
17°C or below
$1,638 Vol.
1%
18°C
$166 Vol.
2%
19°C
$43 Vol.
10%
20°C
$0 Vol.
11%
21°C
$0 Vol.
12%
22°C
$0 Vol.
27%
23°C
$0 Vol.
25%
24°C
$0 Vol.
10%
25°C
$0 Vol.
6%
26°C
$22 Vol.
1%
27°C or higher
$22 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 15 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.**Current short-range forecast guidance from the Finnish Meteorological Institute and global models (ECMWF, Met Office) indicates a daytime maximum near 20–22 °C in Helsinki on 15 August, consistent with late-summer climatology where average highs decline from ~21 °C early in the month toward 18–19 °C by month-end.**
Partly cloudy to overcast skies with light showers or sprinkles are expected under moderate southwesterly flow, limiting strong solar heating while preventing rapid overnight cooling. This places the most probable outcomes in the 19–22 °C range, where small differences in cloud timing, boundary-layer mixing, or localized sea-breeze effects can shift the recorded high by 1–2 °C. Model consensus is relatively tight at this 48-hour lead time, yet inherent uncertainty in convective timing and exact wind speeds keeps adjacent buckets (18 °C through 23 °C) competitive in trader pricing. Updated 12–00 UTC model runs and FMI nowcasts will be the key near-term catalysts.
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 15 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 15 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 13, 2026, 12:57 AM ET
Volume
$1,891End Date
Aug 15, 2026Market Opened
Aug 13, 2026, 12:57 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 15 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.**Current short-range forecast guidance from the Finnish Meteorological Institute and global models (ECMWF, Met Office) indicates a daytime maximum near 20–22 °C in Helsinki on 15 August, consistent with late-summer climatology where average highs decline from ~21 °C early in the month toward 18–19 °C by month-end.**
Partly cloudy to overcast skies with light showers or sprinkles are expected under moderate southwesterly flow, limiting strong solar heating while preventing rapid overnight cooling. This places the most probable outcomes in the 19–22 °C range, where small differences in cloud timing, boundary-layer mixing, or localized sea-breeze effects can shift the recorded high by 1–2 °C. Model consensus is relatively tight at this 48-hour lead time, yet inherent uncertainty in convective timing and exact wind speeds keeps adjacent buckets (18 °C through 23 °C) competitive in trader pricing. Updated 12–00 UTC model runs and FMI nowcasts will be the key near-term catalysts.
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 15 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 15 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
$1,891End Date
Aug 15, 2026Market Opened
Aug 13, 2026, 12:57 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...**Current short-range forecast guidance from the Finnish Meteorological Institute and global models (ECMWF, Met Office) indicates a daytime maximum near 20–22 °C in Helsinki on 15 August, consistent with late-summer climatology where average highs decline from ~21 °C early in the month toward 18–19 °C by month-end.** Partly cloudy to overcast skies with light showers or sprinkles are expected under moderate southwesterly flow, limiting strong solar heating while preventing rapid overnight cooling. This places the most probable outcomes in the 19–22 °C range, where small differences in cloud timing, boundary-layer mixing, or localized sea-breeze effects can shift the recorded high by 1–2 °C. Model consensus is relatively tight at this 48-hour lead time, yet inherent uncertainty in convective timing and exact wind speeds keeps adjacent buckets (18 °C through 23 °C) competitive in trader pricing. Updated 12–00 UTC model runs and FMI nowcasts will be the key near-term catalysts.
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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