Trader consensus overwhelmingly favors a highest temperature of 17°C in Wellington on March 20, driven by MetService New Zealand's latest forecasts showing cloudy conditions, southerly winds, and a cool air mass capping highs at 16-18°C under overcast skies. Ensemble models from global systems like ECMWF and GFS align, projecting daytime maxima around 17°C amid post-frontal stability following recent rain. Historical March averages hover at 19°C, but current synoptic patterns—featuring a blocking high to the south—suppress warming, with low humidity limiting solar heating. Realistic challenges include an unanticipated northerly shift or clear skies boosting insolation by 2-3°C, though low-pressure dominance makes hotter outcomes improbable per model probabilities.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Wellington on March 20?
Highest temperature in Wellington on March 20?
17°C 100.0%
13°C or below <1%
14°C <1%
15°C <1%
$87,836 Vol.
$87,836 Vol.
13°C or below
No
14°C
No
15°C
No
16°C
No
17°C
Yes
18°C
No
19°C
No
20°C
No
21°C
No
22°C
No
23°C or higher
No
17°C 100.0%
13°C or below <1%
14°C <1%
15°C <1%
$87,836 Vol.
$87,836 Vol.
13°C or below
No
14°C
No
15°C
No
16°C
No
17°C
Yes
18°C
No
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 16, 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...Trader consensus overwhelmingly favors a highest temperature of 17°C in Wellington on March 20, driven by MetService New Zealand's latest forecasts showing cloudy conditions, southerly winds, and a cool air mass capping highs at 16-18°C under overcast skies. Ensemble models from global systems like ECMWF and GFS align, projecting daytime maxima around 17°C amid post-frontal stability following recent rain. Historical March averages hover at 19°C, but current synoptic patterns—featuring a blocking high to the south—suppress warming, with low humidity limiting solar heating. Realistic challenges include an unanticipated northerly shift or clear skies boosting insolation by 2-3°C, though low-pressure dominance makes hotter outcomes improbable per model probabilities.
Experimental AI-generated summary referencing Polymarket data · Updated
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