**Current forecast models indicate a typical overnight low near 28–30°C for Jeddah on September 18, yet the near-even market odds between 35°C+ and 25°C or below reflect genuine uncertainty in nocturnal cooling.** Jeddah’s coastal desert setting, moderated by Red Sea sea-surface temperatures around 31°C, sustains high humidity that limits radiative heat loss at night. Light winds, possible land-sea breeze shifts, and any subtle changes in subsidence or cloud cover can alter the minimum by several degrees. Historical September lows average 26–29°C, with rare dips below 25°C or spikes above 32°C tied to anomalous moisture or calm conditions. Fresh model runs from global ensembles and local observations will likely tighten the range ahead of resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Jeddah on September 18?
Lowest temperature in Jeddah on September 18?
35°C or higher 87%
30°C 48%
25°C or below 43.3%
26°C 39%
NEW
NEW
Sep 18, 2026
25°C or below
43%
26°C
39%
27°C
39%
28°C
39%
29°C
39%
30°C
30%
31°C
34%
32°C
39%
33°C
39%
34°C
39%
35°C or higher
87%
35°C or higher 87%
30°C 48%
25°C or below 43.3%
26°C 39%
NEW
NEW
Sep 18, 2026
25°C or below
$86 Vol.
43%
26°C
$0 Vol.
39%
27°C
$0 Vol.
39%
28°C
$0 Vol.
39%
29°C
$0 Vol.
39%
30°C
$354 Vol.
30%
31°C
$422 Vol.
34%
32°C
$0 Vol.
39%
33°C
$0 Vol.
39%
34°C
$0 Vol.
39%
35°C or higher
$0 Vol.
87%
This market will resolve to the temperature range that contains the lowest 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 lowest 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.**Current forecast models indicate a typical overnight low near 28–30°C for Jeddah on September 18, yet the near-even market odds between 35°C+ and 25°C or below reflect genuine uncertainty in nocturnal cooling.** Jeddah’s coastal desert setting, moderated by Red Sea sea-surface temperatures around 31°C, sustains high humidity that limits radiative heat loss at night. Light winds, possible land-sea breeze shifts, and any subtle changes in subsidence or cloud cover can alter the minimum by several degrees. Historical September lows average 26–29°C, with rare dips below 25°C or spikes above 32°C tied to anomalous moisture or calm conditions. Fresh model runs from global ensembles and local observations will likely tighten the range ahead of resolution.
This market will resolve to the temperature range that contains the lowest 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 lowest 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 lowest 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, 12:31 AM ET
Volume
$862End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:31 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=oejnResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest 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 lowest 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.**Current forecast models indicate a typical overnight low near 28–30°C for Jeddah on September 18, yet the near-even market odds between 35°C+ and 25°C or below reflect genuine uncertainty in nocturnal cooling.** Jeddah’s coastal desert setting, moderated by Red Sea sea-surface temperatures around 31°C, sustains high humidity that limits radiative heat loss at night. Light winds, possible land-sea breeze shifts, and any subtle changes in subsidence or cloud cover can alter the minimum by several degrees. Historical September lows average 26–29°C, with rare dips below 25°C or spikes above 32°C tied to anomalous moisture or calm conditions. Fresh model runs from global ensembles and local observations will likely tighten the range ahead of resolution.
This market will resolve to the temperature range that contains the lowest 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 lowest 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 lowest 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
$862End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:31 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=oejnResolver
0x69c47De9D...**Current forecast models indicate a typical overnight low near 28–30°C for Jeddah on September 18, yet the near-even market odds between 35°C+ and 25°C or below reflect genuine uncertainty in nocturnal cooling.** Jeddah’s coastal desert setting, moderated by Red Sea sea-surface temperatures around 31°C, sustains high humidity that limits radiative heat loss at night. Light winds, possible land-sea breeze shifts, and any subtle changes in subsidence or cloud cover can alter the minimum by several degrees. Historical September lows average 26–29°C, with rare dips below 25°C or spikes above 32°C tied to anomalous moisture or calm conditions. Fresh model runs from global ensembles and local observations will likely tighten the range ahead of 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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