Official forecasts from New Zealand's MetService lock in a high of 18°C for Wellington on March 25, driving the market's unanimous 100% implied probability on this outcome as traders price in near-certainty just days out. Ensemble models like ECMWF and GFS converge on cloudy conditions with a cool southerly airflow capping temperatures after recent frontal passages, aligning with historical late-March averages around 19-20°C but adjusted for current synoptic patterns showing overcast skies and light winds. This positioning reflects low model spread and verified short-range accuracy exceeding 90% for daily maxima. Realistic challenges include an unexpected nor'wester foehn effect rapidly clearing clouds to spike readings toward 20°C+, though current radar and upper-air data indicate minimal risk before resolution.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Wellington on March 25?
Highest temperature in Wellington on March 25?
18°C 100.0%
13°C or below <1%
14°C <1%
15°C <1%
$165,680 Vol.
$165,680 Vol.
13°C or below
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
Yes
19°C
No
20°C
No
21°C
No
22°C
No
23°C or higher
No
18°C 100.0%
13°C or below <1%
14°C <1%
15°C <1%
$165,680 Vol.
$165,680 Vol.
13°C or below
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
Yes
19°C
No
20°C
No
21°C
No
22°C
No
23°C or higher
No
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 21, 2026, 6:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/nz/wellington/NZWNResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Resolution Source
https://www.wunderground.com/history/daily/nz/wellington/NZWNResolver
0x69c47De9D...Official forecasts from New Zealand's MetService lock in a high of 18°C for Wellington on March 25, driving the market's unanimous 100% implied probability on this outcome as traders price in near-certainty just days out. Ensemble models like ECMWF and GFS converge on cloudy conditions with a cool southerly airflow capping temperatures after recent frontal passages, aligning with historical late-March averages around 19-20°C but adjusted for current synoptic patterns showing overcast skies and light winds. This positioning reflects low model spread and verified short-range accuracy exceeding 90% for daily maxima. Realistic challenges include an unexpected nor'wester foehn effect rapidly clearing clouds to spike readings toward 20°C+, though current radar and upper-air data indicate minimal risk before resolution.
Experimental AI-generated summary referencing Polymarket data · Updated
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