MetService observations at Wellington International Airport—the market's resolution station—confirm a peak temperature of 14°C earlier today, driving trader consensus to 100% implied probability amid persistent heavy rain and gale-force southerly winds from a stalled low-pressure system over New Zealand. NIWA forecasts align, projecting no higher than 14°C under thick cloud cover and cool airflow, a departure from April's typical 16–17°C highs due to the front's arrival overnight after yesterday's 16.4°C. Uncertainty remains minimal as evening sets in, though a rare brief clearing with solar heating could challenge this if winds ease unexpectedly; updated hourly METARs and evening observations will finalize the outcome.
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 April 20?
14°C 100.0%
9°C or below <1%
10°C <1%
11°C <1%
$155,843 Vol.
$155,843 Vol.
9°C or below
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C
Yes
15°C
No
16°C
No
17°C
No
18°C
No
19°C or higher
No
14°C 100.0%
9°C or below <1%
10°C <1%
11°C <1%
$155,843 Vol.
$155,843 Vol.
9°C or below
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C
Yes
15°C
No
16°C
No
17°C
No
18°C
No
19°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: Apr 18, 2026, 12:19 AM ET
Resolution Source
https://www.wunderground.com/history/daily/nz/wellington/NZWNResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: 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.
Resolution Source
https://www.wunderground.com/history/daily/nz/wellington/NZWNResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
MetService observations at Wellington International Airport—the market's resolution station—confirm a peak temperature of 14°C earlier today, driving trader consensus to 100% implied probability amid persistent heavy rain and gale-force southerly winds from a stalled low-pressure system over New Zealand. NIWA forecasts align, projecting no higher than 14°C under thick cloud cover and cool airflow, a departure from April's typical 16–17°C highs due to the front's arrival overnight after yesterday's 16.4°C. Uncertainty remains minimal as evening sets in, though a rare brief clearing with solar heating could challenge this if winds ease unexpectedly; updated hourly METARs and evening observations will finalize the outcome.
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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