Ensemble forecasts from the Finnish Meteorological Institute and ECMWF place Helsinki’s July 18 daytime maximum near 23–25 °C under partly cloudy skies, light northeasterly flow, and modest solar insolation. A building Scandinavian ridge supports gradual warming above the July climatological mean of ~21 °C, yet Baltic Sea breezes and residual boundary-layer moisture limit further rises. Short-range model consensus remains tight two days ahead, with resolution hinging on the precise peak at official stations; any increase in cloud cover or shift in wind direction could favor the 24 °C or lower brackets that together hold nearly 40 % of market-implied probability.
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 July 18?
Highest temperature in Helsinki on July 18?
25°C 31%
26°C 27%
24°C 24%
23°C 13%
NEW
NEW
Jul 18, 2026
19°C or below
<1%
20°C
1%
21°C
3%
22°C
7%
23°C
13%
24°C
24%
25°C
31%
26°C
27%
27°C
4%
28°C
1%
29°C or higher
1%
25°C 31%
26°C 27%
24°C 24%
23°C 13%
NEW
NEW
Jul 18, 2026
19°C or below
$54 Vol.
<1%
20°C
$50 Vol.
1%
21°C
$41 Vol.
3%
22°C
$85 Vol.
7%
23°C
$116 Vol.
13%
24°C
$40 Vol.
24%
25°C
$33 Vol.
31%
26°C
$60 Vol.
27%
27°C
$76 Vol.
4%
28°C
$38 Vol.
1%
29°C or higher
$40 Vol.
1%
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 Jul '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.Ensemble forecasts from the Finnish Meteorological Institute and ECMWF place Helsinki’s July 18 daytime maximum near 23–25 °C under partly cloudy skies, light northeasterly flow, and modest solar insolation. A building Scandinavian ridge supports gradual warming above the July climatological mean of ~21 °C, yet Baltic Sea breezes and residual boundary-layer moisture limit further rises. Short-range model consensus remains tight two days ahead, with resolution hinging on the precise peak at official stations; any increase in cloud cover or shift in wind direction could favor the 24 °C or lower brackets that together hold nearly 40 % of market-implied probability.
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 Jul '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.
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: Jul 16, 2026, 1:05 AM ET
Volume
$633End Date
Jul 18, 2026Market Opened
Jul 16, 2026, 1:05 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...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 Jul '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.Ensemble forecasts from the Finnish Meteorological Institute and ECMWF place Helsinki’s July 18 daytime maximum near 23–25 °C under partly cloudy skies, light northeasterly flow, and modest solar insolation. A building Scandinavian ridge supports gradual warming above the July climatological mean of ~21 °C, yet Baltic Sea breezes and residual boundary-layer moisture limit further rises. Short-range model consensus remains tight two days ahead, with resolution hinging on the precise peak at official stations; any increase in cloud cover or shift in wind direction could favor the 24 °C or lower brackets that together hold nearly 40 % of market-implied probability.
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 Jul '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.
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
$633End Date
Jul 18, 2026Market Opened
Jul 16, 2026, 1:05 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Ensemble forecasts from the Finnish Meteorological Institute and ECMWF place Helsinki’s July 18 daytime maximum near 23–25 °C under partly cloudy skies, light northeasterly flow, and modest solar insolation. A building Scandinavian ridge supports gradual warming above the July climatological mean of ~21 °C, yet Baltic Sea breezes and residual boundary-layer moisture limit further rises. Short-range model consensus remains tight two days ahead, with resolution hinging on the precise peak at official stations; any increase in cloud cover or shift in wind direction could favor the 24 °C or lower brackets that together hold nearly 40 % of market-implied probability.
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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