**Forecast models from agencies including the Met Office and ECMWF indicate a maximum of 37–38°C in Jeddah on September 18 under mostly sunny skies and light westerly winds.** This consensus on peak heating, combined with typical Red Sea coastal moderation from sea breezes and humidity around 55–60%, underpins the near-even market-implied odds for 37°C (36%) versus 38°C (35.5%). Minor differences hinge on exact cloud timing, wind strength, and diurnal temperature rise rates, while the 16% probability for 39°C or higher reflects potential for reduced marine influence or clearer conditions. Recent observations show September maxima often near 37–38°C, with stable high-pressure patterns supporting limited day-to-day variability ahead of the daily high-temperature resolution.
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 18?
Highest temperature in Jeddah on September 18?
37°C 37%
38°C 36%
39°C or higher 15%
36°C 12%
NEW
NEW
Sep 18, 2026
29°C or below
<1%
30°C
1%
31°C
1%
32°C
<1%
33°C
1%
34°C
2%
35°C
5%
36°C
12%
37°C
37%
38°C
36%
39°C or higher
15%
37°C 37%
38°C 36%
39°C or higher 15%
36°C 12%
NEW
NEW
Sep 18, 2026
29°C or below
$305 Vol.
<1%
30°C
$225 Vol.
1%
31°C
$225 Vol.
1%
32°C
$197 Vol.
<1%
33°C
$44 Vol.
1%
34°C
$0 Vol.
2%
35°C
$5 Vol.
5%
36°C
$364 Vol.
12%
37°C
$169 Vol.
37%
38°C
$510 Vol.
36%
39°C or higher
$54 Vol.
15%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the King Abdulaziz International Airport Station in degrees Celsius on 18 Sep '26.
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.**Forecast models from agencies including the Met Office and ECMWF indicate a maximum of 37–38°C in Jeddah on September 18 under mostly sunny skies and light westerly winds.** This consensus on peak heating, combined with typical Red Sea coastal moderation from sea breezes and humidity around 55–60%, underpins the near-even market-implied odds for 37°C (36%) versus 38°C (35.5%). Minor differences hinge on exact cloud timing, wind strength, and diurnal temperature rise rates, while the 16% probability for 39°C or higher reflects potential for reduced marine influence or clearer conditions. Recent observations show September maxima often near 37–38°C, with stable high-pressure patterns supporting limited day-to-day variability ahead of the daily high-temperature resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the King Abdulaziz International Airport Station in degrees Celsius on 18 Sep '26.
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.
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 16, 2026, 12:58 AM ET
Volume
$2,098End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=oejnResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the King Abdulaziz International Airport Station in degrees Celsius on 18 Sep '26.
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.**Forecast models from agencies including the Met Office and ECMWF indicate a maximum of 37–38°C in Jeddah on September 18 under mostly sunny skies and light westerly winds.** This consensus on peak heating, combined with typical Red Sea coastal moderation from sea breezes and humidity around 55–60%, underpins the near-even market-implied odds for 37°C (36%) versus 38°C (35.5%). Minor differences hinge on exact cloud timing, wind strength, and diurnal temperature rise rates, while the 16% probability for 39°C or higher reflects potential for reduced marine influence or clearer conditions. Recent observations show September maxima often near 37–38°C, with stable high-pressure patterns supporting limited day-to-day variability ahead of the daily high-temperature resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the King Abdulaziz International Airport Station in degrees Celsius on 18 Sep '26.
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.
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.
Volume
$2,098End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=oejnResolver
0x69c47De9D...**Forecast models from agencies including the Met Office and ECMWF indicate a maximum of 37–38°C in Jeddah on September 18 under mostly sunny skies and light westerly winds.** This consensus on peak heating, combined with typical Red Sea coastal moderation from sea breezes and humidity around 55–60%, underpins the near-even market-implied odds for 37°C (36%) versus 38°C (35.5%). Minor differences hinge on exact cloud timing, wind strength, and diurnal temperature rise rates, while the 16% probability for 39°C or higher reflects potential for reduced marine influence or clearer conditions. Recent observations show September maxima often near 37–38°C, with stable high-pressure patterns supporting limited day-to-day variability ahead of the daily high-temperature resolution.
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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