**Official forecasts for Jeddah on September 16, 2026, consistently indicate a daily maximum near 39°C under clear skies, light to moderate southwest winds, and typical late-summer humidity levels of 50-60%.** This aligns with the market's strong 96.8% implied probability for 39°C, reflecting trader confidence in National Meteorological Center and international model consensus for peak afternoon temperatures. Historical September averages hover around 35-36°C, but current atmospheric conditions, including stable high pressure and minimal cloud cover, support the elevated reading. The low probabilities for 40°C or higher (3.3%) or cooler outcomes reflect the narrow uncertainty band in short-range models. A realistic challenge could arise from localized sea-breeze effects or unexpected convective activity slightly suppressing the peak, though latest guidance shows little divergence on this timeframe.
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 16?
39°C 96.8%
40°C 3.3%
41°C or higher <1%
31°C or below <1%
$30,228 Vol.
$30,228 Vol.
31°C or below
<1%
32°C
<1%
33°C
<1%
34°C
<1%
35°C
<1%
36°C
<1%
37°C
<1%
38°C
<1%
39°C
97%
40°C
3%
41°C or higher
1%
39°C 96.8%
40°C 3.3%
41°C or higher <1%
31°C or below <1%
$30,228 Vol.
$30,228 Vol.
31°C or below
<1%
32°C
<1%
33°C
<1%
34°C
<1%
35°C
<1%
36°C
<1%
37°C
<1%
38°C
<1%
39°C
97%
40°C
3%
41°C or higher
1%
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 14, 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...**Official forecasts for Jeddah on September 16, 2026, consistently indicate a daily maximum near 39°C under clear skies, light to moderate southwest winds, and typical late-summer humidity levels of 50-60%.** This aligns with the market's strong 96.8% implied probability for 39°C, reflecting trader confidence in National Meteorological Center and international model consensus for peak afternoon temperatures. Historical September averages hover around 35-36°C, but current atmospheric conditions, including stable high pressure and minimal cloud cover, support the elevated reading. The low probabilities for 40°C or higher (3.3%) or cooler outcomes reflect the narrow uncertainty band in short-range models. A realistic challenge could arise from localized sea-breeze effects or unexpected convective activity slightly suppressing the peak, though latest guidance shows little divergence on this timeframe.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions