Trader consensus on Polymarket heavily favors a Wellington high of 18°C at 47% implied probability, driven by MetService's latest forecast indicating a maximum around 18°C under partly cloudy skies and strengthening southerly winds on March 19. This aligns with recent ECMWF and GFS model runs converging on mild autumn conditions after a cooler air mass displaces earlier warmth, positioning 19°C (27.5%) and 17°C (16.5%) as strong contenders. Wellington's maritime climate typically yields March highs of 18-20°C historically, but persistent westerlies and coastal cooling suppress extremes above 20°C (2.1% combined), with low odds for hotter outliers reflecting baseline variability and no heatwave signals in upper-air data.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Wellington on March 19?
Highest temperature in Wellington on March 19?
18°C 48%
19°C 28%
17°C 17%
20°C 2.7%
$71,714 Vol.
$71,714 Vol.
16°C
2%
17°C
17%
18°C
48%
19°C
28%
20°C
3%
21°C
1%
22°C or higher
<1%
18°C 48%
19°C 28%
17°C 17%
20°C 2.7%
$71,714 Vol.
$71,714 Vol.
16°C
2%
17°C
17%
18°C
48%
19°C
28%
20°C
3%
21°C
1%
22°C or higher
<1%
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Wellington Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: Mar 15, 2026, 6:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/nz/wellington/NZWNResolver
0x69c47De9D...Resolution Source
https://www.wunderground.com/history/daily/nz/wellington/NZWNResolver
0x69c47De9D...Trader consensus on Polymarket heavily favors a Wellington high of 18°C at 47% implied probability, driven by MetService's latest forecast indicating a maximum around 18°C under partly cloudy skies and strengthening southerly winds on March 19. This aligns with recent ECMWF and GFS model runs converging on mild autumn conditions after a cooler air mass displaces earlier warmth, positioning 19°C (27.5%) and 17°C (16.5%) as strong contenders. Wellington's maritime climate typically yields March highs of 18-20°C historically, but persistent westerlies and coastal cooling suppress extremes above 20°C (2.1% combined), with low odds for hotter outliers reflecting baseline variability and no heatwave signals in upper-air data.
Experimental AI-generated summary referencing Polymarket data · Updated
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