Model consensus from major forecasts places Jeddah’s September 19 maximum temperature near 36–38 °C, with slight differences in predicted sea-breeze strength and boundary-layer mixing creating the tight spread between the leading 37 °C and 38 °C outcomes. Persistent subtropical high pressure and clear skies favor strong daytime heating, while the Red Sea’s warm surface waters and typical late-summer humidity moderate extremes through onshore flow. Historical September averages near 36–37 °C provide context, yet small revisions in wind speed or low-level moisture in the next model runs could shift the peak by 1 °C. Official observations from the Jeddah airport station will determine the final recorded high.
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 19?
37°C 40%
38°C 35%
36°C 15%
39°C or higher 9.1%
29°C or below
<1%
30°C
<1%
31°C
<1%
32°C
<1%
33°C
1%
34°C
2%
35°C
4%
36°C
15%
37°C
40%
38°C
35%
39°C or higher
9%
37°C 40%
38°C 35%
36°C 15%
39°C or higher 9.1%
29°C or below
<1%
30°C
<1%
31°C
<1%
32°C
<1%
33°C
1%
34°C
2%
35°C
4%
36°C
15%
37°C
40%
38°C
35%
39°C or higher
9%
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 17, 2026, 12:58 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=oejnResolver
0x69c47De9D...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...Model consensus from major forecasts places Jeddah’s September 19 maximum temperature near 36–38 °C, with slight differences in predicted sea-breeze strength and boundary-layer mixing creating the tight spread between the leading 37 °C and 38 °C outcomes. Persistent subtropical high pressure and clear skies favor strong daytime heating, while the Red Sea’s warm surface waters and typical late-summer humidity moderate extremes through onshore flow. Historical September averages near 36–37 °C provide context, yet small revisions in wind speed or low-level moisture in the next model runs could shift the peak by 1 °C. Official observations from the Jeddah airport station will determine the final recorded high.
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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