Latest MetService forecasts and ensemble model outputs from ECMWF and GFS are driving trader consensus toward a tight cluster of 17-20°C highs for Wellington on March 22, with 19°C edging ahead at 27.5% implied probability amid minimal spread. A persistent high-pressure ridge over New Zealand promises settled conditions and ample solar insolation, but moderating southerlies channeling cooler Tasman Sea air—Wellington's maritime influence—cap peaks below recent 22°C outliers. Diurnal temperature ranges averaging 8-10°C from overnight lows near 14°C further differentiate outcomes, as small variances in boundary layer mixing or afternoon cloud could swing the max by 1-2°C, explaining the razor-thin odds separation. Historical March maxima (mean 20.1°C) align with this outlook.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Wellington on March 22?
Highest temperature in Wellington on March 22?
19°C 28%
18°C 27%
20°C 26%
17°C 24%
12°C or below
2%
13°C
6%
14°C
6%
15°C
6%
16°C
9%
17°C
24%
18°C
27%
19°C
28%
20°C
26%
21°C
21%
22°C or higher
22%
19°C 28%
18°C 27%
20°C 26%
17°C 24%
12°C or below
2%
13°C
6%
14°C
6%
15°C
6%
16°C
9%
17°C
24%
18°C
27%
19°C
28%
20°C
26%
21°C
21%
22°C or higher
22%
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 18, 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...Latest MetService forecasts and ensemble model outputs from ECMWF and GFS are driving trader consensus toward a tight cluster of 17-20°C highs for Wellington on March 22, with 19°C edging ahead at 27.5% implied probability amid minimal spread. A persistent high-pressure ridge over New Zealand promises settled conditions and ample solar insolation, but moderating southerlies channeling cooler Tasman Sea air—Wellington's maritime influence—cap peaks below recent 22°C outliers. Diurnal temperature ranges averaging 8-10°C from overnight lows near 14°C further differentiate outcomes, as small variances in boundary layer mixing or afternoon cloud could swing the max by 1-2°C, explaining the razor-thin odds separation. Historical March maxima (mean 20.1°C) align with this outlook.
Experimental AI-generated summary referencing Polymarket data · Updated
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