Recent forecasts from global and regional models indicate Moscow's September 18 high will most likely reach 17–19 °C under increasing cloud cover and light rain associated with a passing frontal system. Southwesterly flow is expected to moderate temperatures after the warmer 21–23 °C conditions observed on the 17th, while reduced insolation and modest precipitation limit afternoon heating. Official guidance from Russian meteorological sources and ensemble consensus place the peak near 18 °C, consistent with mid-September climatology. Traders have concentrated probability on 18 °C and 17 °C outcomes, reflecting the narrow range between current model runs and the limited upside potential should clearing occur earlier than projected.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Moscow on September 18?
18°C 51%
17°C 35%
19°C 13%
16°C 3%
10°C or below
<1%
11°C
<1%
12°C
<1%
13°C
<1%
14°C
1%
15°C
2%
16°C
3%
17°C
35%
18°C
51%
19°C
13%
20°C or higher
3%
18°C 51%
17°C 35%
19°C 13%
16°C 3%
10°C or below
<1%
11°C
<1%
12°C
<1%
13°C
<1%
14°C
1%
15°C
2%
16°C
3%
17°C
35%
18°C
51%
19°C
13%
20°C or higher
3%
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=UUWW
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
Resolver
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=UUWW
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.
Resolver
0x69c47De9D...Recent forecasts from global and regional models indicate Moscow's September 18 high will most likely reach 17–19 °C under increasing cloud cover and light rain associated with a passing frontal system. Southwesterly flow is expected to moderate temperatures after the warmer 21–23 °C conditions observed on the 17th, while reduced insolation and modest precipitation limit afternoon heating. Official guidance from Russian meteorological sources and ensemble consensus place the peak near 18 °C, consistent with mid-September climatology. Traders have concentrated probability on 18 °C and 17 °C outcomes, reflecting the narrow range between current model runs and the limited upside potential should clearing occur earlier than projected.
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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