Current numerical weather prediction consensus from MetService and global models positions Wellington’s June 20 maximum near 16–17 °C, driving the market’s tight 42 % / 34.5 % split between those outcomes. This reflects a mild late-autumn regime with reduced radiational cooling under light northerly flow, modestly above the region’s June climatological mean of 12–14 °C. NIWA’s April–June outlook assigns a 45 % probability of near-average temperatures, consistent with the low odds on extremes below 15 °C or above 18 °C. Ensemble spread remains the key uncertainty; fresh model runs over the next 48 hours, particularly afternoon boundary-layer and wind forecasts, will determine whether the peak settles at 16 °C or edges to 17 °C before official resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Wellington on June 20?
Highest temperature in Wellington on June 20?
17°C 100.0%
11°C or below <1%
12°C <1%
13°C <1%
$53,978 Vol.
$53,978 Vol.
Jun 20, 2026
11°C or below
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C
Yes
18°C
No
19°C
No
20°C
No
21°C or higher
No
17°C 100.0%
11°C or below <1%
12°C <1%
13°C <1%
$53,978 Vol.
$53,978 Vol.
Jun 20, 2026
11°C or below
$165 Vol.
No
12°C
$312 Vol.
No
13°C
$880 Vol.
No
14°C
$1,083 Vol.
No
15°C
$5,393 Vol.
No
16°C
$15,145 Vol.
No
17°C
$12,958 Vol.
Yes
18°C
$8,109 Vol.
No
19°C
$4,722 Vol.
No
20°C
$4,931 Vol.
No
21°C or higher
$281 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the Wellington Intl Airport Station in degrees Celsius on 20 Jun '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 Wellington Intl Airport Station, available here: https://www.wunderground.com/history/daily/nz/wellington/NZWN.
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 numerical weather prediction consensus from MetService and global models positions Wellington’s June 20 maximum near 16–17 °C, driving the market’s tight 42 % / 34.5 % split between those outcomes. This reflects a mild late-autumn regime with reduced radiational cooling under light northerly flow, modestly above the region’s June climatological mean of 12–14 °C. NIWA’s April–June outlook assigns a 45 % probability of near-average temperatures, consistent with the low odds on extremes below 15 °C or above 18 °C. Ensemble spread remains the key uncertainty; fresh model runs over the next 48 hours, particularly afternoon boundary-layer and wind forecasts, will determine whether the peak settles at 16 °C or edges to 17 °C before official resolution.
This market will resolve to the temperature range that contains the highest temperature recorded at the Wellington Intl Airport Station in degrees Celsius on 20 Jun '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 Wellington Intl Airport Station, available here: https://www.wunderground.com/history/daily/nz/wellington/NZWN.
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 Wellington Intl Airport Station, available here: https://www.wunderground.com/history/daily/nz/wellington/NZWN.
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: Jun 18, 2026, 12:03 AM ET
Volume
$53,978End Date
Jun 20, 2026Market Opened
Jun 18, 2026, 12:03 AM ETResolution Source
https://www.wunderground.com/history/daily/nz/wellington/NZWNResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded at the Wellington Intl Airport Station in degrees Celsius on 20 Jun '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 Wellington Intl Airport Station, available here: https://www.wunderground.com/history/daily/nz/wellington/NZWN.
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 numerical weather prediction consensus from MetService and global models positions Wellington’s June 20 maximum near 16–17 °C, driving the market’s tight 42 % / 34.5 % split between those outcomes. This reflects a mild late-autumn regime with reduced radiational cooling under light northerly flow, modestly above the region’s June climatological mean of 12–14 °C. NIWA’s April–June outlook assigns a 45 % probability of near-average temperatures, consistent with the low odds on extremes below 15 °C or above 18 °C. Ensemble spread remains the key uncertainty; fresh model runs over the next 48 hours, particularly afternoon boundary-layer and wind forecasts, will determine whether the peak settles at 16 °C or edges to 17 °C before official resolution.
This market will resolve to the temperature range that contains the highest temperature recorded at the Wellington Intl Airport Station in degrees Celsius on 20 Jun '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 Wellington Intl Airport Station, available here: https://www.wunderground.com/history/daily/nz/wellington/NZWN.
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 Wellington Intl Airport Station, available here: https://www.wunderground.com/history/daily/nz/wellington/NZWN.
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
$53,978End Date
Jun 20, 2026Market Opened
Jun 18, 2026, 12:03 AM ETResolution Source
https://www.wunderground.com/history/daily/nz/wellington/NZWNResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Current numerical weather prediction consensus from MetService and global models positions Wellington’s June 20 maximum near 16–17 °C, driving the market’s tight 42 % / 34.5 % split between those outcomes. This reflects a mild late-autumn regime with reduced radiational cooling under light northerly flow, modestly above the region’s June climatological mean of 12–14 °C. NIWA’s April–June outlook assigns a 45 % probability of near-average temperatures, consistent with the low odds on extremes below 15 °C or above 18 °C. Ensemble spread remains the key uncertainty; fresh model runs over the next 48 hours, particularly afternoon boundary-layer and wind forecasts, will determine whether the peak settles at 16 °C or edges to 17 °C before official resolution.
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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