**Forecast uncertainty around Wellington's overnight minimum on September 13 drives the closely matched market odds.** Multiple numerical weather prediction models show notable spread in expected low temperatures, with some runs indicating clear, calm conditions allowing radiational cooling toward 4–7°C while others suggest persistent winds or cloud cover keeping readings near 9–11°C or higher. Wellington’s exposed coastal position and variable synoptic patterns—particularly shifts between southerly and northerly flows—amplify small differences in timing and strength of any frontal passages or high-pressure ridges. Historical September climatology places typical overnight lows near 7–9°C, providing context for the current dispersion. Traders are therefore pricing in genuine model disagreement rather than a single consensus outcome, with resolution hinging on the final observational minimum reported for the calendar day.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Wellington on September 13?
4°C or below 70%
14°C or higher 70%
6°C 38%
11°C 38%
4°C or below
70%
5°C
16%
6°C
38%
7°C
22%
8°C
30%
9°C
22%
10°C
21%
11°C
38%
12°C
16%
13°C
14%
14°C or higher
70%
4°C or below 70%
14°C or higher 70%
6°C 38%
11°C 38%
4°C or below
70%
5°C
16%
6°C
38%
7°C
22%
8°C
30%
9°C
22%
10°C
21%
11°C
38%
12°C
16%
13°C
14%
14°C or higher
70%
The resolution source for this market will be information from NOAA, specifically the lowest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=nzwn
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Sep 11, 2026, 12:29 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=nzwnResolver
0x69c47De9D...The resolution source for this market will be information from NOAA, specifically the lowest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=nzwn
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=nzwnResolver
0x69c47De9D...**Forecast uncertainty around Wellington's overnight minimum on September 13 drives the closely matched market odds.** Multiple numerical weather prediction models show notable spread in expected low temperatures, with some runs indicating clear, calm conditions allowing radiational cooling toward 4–7°C while others suggest persistent winds or cloud cover keeping readings near 9–11°C or higher. Wellington’s exposed coastal position and variable synoptic patterns—particularly shifts between southerly and northerly flows—amplify small differences in timing and strength of any frontal passages or high-pressure ridges. Historical September climatology places typical overnight lows near 7–9°C, providing context for the current dispersion. Traders are therefore pricing in genuine model disagreement rather than a single consensus outcome, with resolution hinging on the final observational minimum reported for the calendar day.
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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