**Traders have converged on a 40°C daily maximum in Jeddah on September 15 because official station observations and multiple forecast models show the temperature peaking at that exact threshold amid typical late-summer Red Sea coastal conditions.** Clear skies, light variable winds, and high humidity have supported strong daytime heating without significant cloud cover or precipitation to moderate it, consistent with September climatology where averages reach the mid-30s °C and occasional peaks exceed 40°C. Real-time data from sources like local meteorological stations confirm the high has been attained, producing the market-implied certainty. A realistic challenge would require post-analysis revisions to station records or discrepancies between measurement sites, though such adjustments are uncommon once the diurnal cycle has passed.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Jeddah on September 15?
40°C 100.0%
36°C or below <1%
37°C <1%
38°C <1%
$37,942 Vol.
$37,942 Vol.
36°C or below
No
37°C
No
38°C
No
39°C
No
40°C
Yes
41°C
No
42°C
No
43°C
No
44°C
No
45°C
No
46°C or higher
No
40°C 100.0%
36°C or below <1%
37°C <1%
38°C <1%
$37,942 Vol.
$37,942 Vol.
36°C or below
No
37°C
No
38°C
No
39°C
No
40°C
Yes
41°C
No
42°C
No
43°C
No
44°C
No
45°C
No
46°C or higher
No
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=oejn
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 13, 2026, 1:56 PM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=oejnResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=oejn
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=oejnResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
**Traders have converged on a 40°C daily maximum in Jeddah on September 15 because official station observations and multiple forecast models show the temperature peaking at that exact threshold amid typical late-summer Red Sea coastal conditions.** Clear skies, light variable winds, and high humidity have supported strong daytime heating without significant cloud cover or precipitation to moderate it, consistent with September climatology where averages reach the mid-30s °C and occasional peaks exceed 40°C. Real-time data from sources like local meteorological stations confirm the high has been attained, producing the market-implied certainty. A realistic challenge would require post-analysis revisions to station records or discrepancies between measurement sites, though such adjustments are uncommon once the diurnal cycle has passed.
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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