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Highest temperature in Helsinki on July 31?

icon for Highest temperature in Helsinki on July 31?

Highest temperature in Helsinki on July 31?

Jul 29

Jul 30

Jul 31

Jul 29

Jul 30

Jul 31

26°C 38%

25°C 32%

23°C 16%

24°C 16%

Polymarket
NEW

26°C 38%

25°C 32%

23°C 16%

24°C 16%

Polymarket
NEW

20°C or below

$15 Vol.

2%

21°C

$80 Vol.

1%

22°C

$382 Vol.

3%

23°C

$65 Vol.

16%

24°C

$65 Vol.

16%

25°C

$147 Vol.

32%

26°C

$297 Vol.

38%

27°C

$88 Vol.

12%

28°C

$75 Vol.

2%

29°C

$10 Vol.

2%

30°C or higher

$10 Vol.

2%

This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 31 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.Recent numerical weather prediction models highlight a strengthening southerly flow and limited cloud cover that could push Helsinki's July 31 daytime maximum into the mid-20s Celsius range, establishing 26 °C and 25 °C as the market's leading outcomes. These probabilities reflect the current ensemble consensus around 22–24 °C with upside potential from warmer boundary-layer air masses, consistent with late-July climatology yet above the 21 °C monthly average. Finnish Meteorological Institute updates and regional model runs expected in the next 48 hours will refine land-sea breeze effects and any frontal timing that could cap or elevate readings, keeping trader focus on the narrow 24–27 °C band ahead of resolution.

This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 31 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.
Volume
$1,234
End Date
Jul 31, 2026
Market Opened
Jul 29, 2026, 12:04 AM ET

Resolution Source

https://www.wunderground.com/history/daily/fi/vantaa/EFHK

Resolver

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 31 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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 31 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.Recent numerical weather prediction models highlight a strengthening southerly flow and limited cloud cover that could push Helsinki's July 31 daytime maximum into the mid-20s Celsius range, establishing 26 °C and 25 °C as the market's leading outcomes. These probabilities reflect the current ensemble consensus around 22–24 °C with upside potential from warmer boundary-layer air masses, consistent with late-July climatology yet above the 21 °C monthly average. Finnish Meteorological Institute updates and regional model runs expected in the next 48 hours will refine land-sea breeze effects and any frontal timing that could cap or elevate readings, keeping trader focus on the narrow 24–27 °C band ahead of resolution.

This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 31 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.
Volume
$1,234
End Date
Jul 31, 2026
Market Opened
Jul 29, 2026, 12:04 AM ET

Resolution Source

https://www.wunderground.com/history/daily/fi/vantaa/EFHK

Resolver

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 31 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.

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Frequently Asked Questions

"Highest temperature in Helsinki on July 31?" is a prediction market on Polymarket with 11 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "26°C" at 38%, followed by "25°C" at 33%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 38¢ implies that the market collectively assigns a 38% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

"Highest temperature in Helsinki on July 31?" is a newly created market on Polymarket, launched on Jul 29, 2026. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "Highest temperature in Helsinki on July 31?," browse the 11 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Highest temperature in Helsinki on July 31?" is "26°C" at 38%, meaning the market assigns a 38% chance to that outcome. The next closest outcome is "25°C" at 33%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Highest temperature in Helsinki on July 31?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.