Current forecast models from the Finnish Meteorological Institute and international agencies indicate a daily maximum around 19°C for Helsinki on August 18, consistent with late-summer climatology where highs typically decline from 20–22°C early in the month. Recent observational trends show mild, mostly cloudy conditions with light winds and low precipitation risk, limiting daytime warming potential. Ensemble guidance reveals minor spread in temperature outcomes depending on cloud cover and advection patterns, with no strong signals for anomalous heat or rapid cooling. Traders monitor updated model runs and official observations through resolution, as small shifts in maximum readings directly influence contract settlement.
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 18?
Highest temperature in Helsinki on August 18?
20°C 37%
19°C 18%
21°C 12%
22°C 7%
NEW
NEW
Aug 18, 2026
15°C or below
1%
16°C
5%
17°C
4%
18°C
6%
19°C
12%
20°C
37%
21°C
12%
22°C
11%
23°C
7%
24°C
4%
25°C or higher
4%
20°C 37%
19°C 18%
21°C 12%
22°C 7%
NEW
NEW
Aug 18, 2026
15°C or below
$0 Vol.
1%
16°C
$0 Vol.
5%
17°C
$8 Vol.
4%
18°C
$0 Vol.
6%
19°C
$6 Vol.
12%
20°C
$0 Vol.
37%
21°C
$0 Vol.
12%
22°C
$0 Vol.
11%
23°C
$0 Vol.
7%
24°C
$0 Vol.
4%
25°C or higher
$0 Vol.
4%
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 18 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 forecast models from the Finnish Meteorological Institute and international agencies indicate a daily maximum around 19°C for Helsinki on August 18, consistent with late-summer climatology where highs typically decline from 20–22°C early in the month. Recent observational trends show mild, mostly cloudy conditions with light winds and low precipitation risk, limiting daytime warming potential. Ensemble guidance reveals minor spread in temperature outcomes depending on cloud cover and advection patterns, with no strong signals for anomalous heat or rapid cooling. Traders monitor updated model runs and official observations through resolution, as small shifts in maximum readings directly influence contract settlement.
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 18 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 18 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 16, 2026, 12:58 AM ET
Volume
$13End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 12:58 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 18 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 forecast models from the Finnish Meteorological Institute and international agencies indicate a daily maximum around 19°C for Helsinki on August 18, consistent with late-summer climatology where highs typically decline from 20–22°C early in the month. Recent observational trends show mild, mostly cloudy conditions with light winds and low precipitation risk, limiting daytime warming potential. Ensemble guidance reveals minor spread in temperature outcomes depending on cloud cover and advection patterns, with no strong signals for anomalous heat or rapid cooling. Traders monitor updated model runs and official observations through resolution, as small shifts in maximum readings directly influence contract settlement.
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 18 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 18 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
$13End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 12:58 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Current forecast models from the Finnish Meteorological Institute and international agencies indicate a daily maximum around 19°C for Helsinki on August 18, consistent with late-summer climatology where highs typically decline from 20–22°C early in the month. Recent observational trends show mild, mostly cloudy conditions with light winds and low precipitation risk, limiting daytime warming potential. Ensemble guidance reveals minor spread in temperature outcomes depending on cloud cover and advection patterns, with no strong signals for anomalous heat or rapid cooling. Traders monitor updated model runs and official observations through resolution, as small shifts in maximum readings directly influence contract settlement.
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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