Mount Washington’s summit experiences peak September gusts primarily from strong pressure gradients tied to extratropical lows or the remnants of tropical cyclones, which historically have driven the month’s highest readings—such as the 174 mph record from Hurricane David’s remnants in 1979. The mountain’s topography funnels westerly flows, amplifying speeds via orographic effects and a lowering tropopause as seasonal cooling strengthens the jet stream. As of early September 2026, official observations from the Mount Washington Observatory and NWS show light winds under 30 mph amid fog and stable high pressure, with near-term forecasts indicating only modest increases to 40–46 mph gusts. Traders will watch subsequent National Hurricane Center outlooks and model runs for any late-season Atlantic systems, as even distant remnants can rapidly elevate daily maxima above the typical 90–100 mph range before month-end data release.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest Mt. Washington wind speed in September?
Highest Mt. Washington wind speed in September?
NEW
Sep 30, 2026
≥80 mph
95%
≥85 mph
89%
≥90 mph
50%
≥95 mph
50%
≥100 mph
50%
≥105 mph
48%
≥110 mph
44%
$0.00 Vol.
≥80 mph
$0 Vol.
95%
≥85 mph
$0 Vol.
89%
≥90 mph
$0 Vol.
50%
≥95 mph
$0 Vol.
50%
≥100 mph
$0 Vol.
50%
≥105 mph
$0 Vol.
48%
≥110 mph
$0 Vol.
44%
This market will resolve based on the highest wind speed, in miles per hour, reported on the summit of Mt. Washington in New Hampshire in September, 2026.
The resolution source will be data published by the Mt. Washington Weather Observatory. F6 reports containing daily wind speed recordings can be found here: https://mountwashington.org/weather/mount-washington-weather-archives/monthly-f6/.
The resolution source for this market measures wind speeds to whole mile per hour (eg, 67mph). Thus, this is the level of precision that will be used when resolving the market.
Revisions to the wind speed recorded within this market's timeframe will be considered until the first datapoint for the following month has been published, after which any alterations will not be considered.Mount Washington’s summit experiences peak September gusts primarily from strong pressure gradients tied to extratropical lows or the remnants of tropical cyclones, which historically have driven the month’s highest readings—such as the 174 mph record from Hurricane David’s remnants in 1979. The mountain’s topography funnels westerly flows, amplifying speeds via orographic effects and a lowering tropopause as seasonal cooling strengthens the jet stream. As of early September 2026, official observations from the Mount Washington Observatory and NWS show light winds under 30 mph amid fog and stable high pressure, with near-term forecasts indicating only modest increases to 40–46 mph gusts. Traders will watch subsequent National Hurricane Center outlooks and model runs for any late-season Atlantic systems, as even distant remnants can rapidly elevate daily maxima above the typical 90–100 mph range before month-end data release.
This market will resolve based on the highest wind speed, in miles per hour, reported on the summit of Mt. Washington in New Hampshire in September, 2026.
The resolution source will be data published by the Mt. Washington Weather Observatory. F6 reports containing daily wind speed recordings can be found here: https://mountwashington.org/weather/mount-washington-weather-archives/monthly-f6/.
The resolution source for this market measures wind speeds to whole mile per hour (eg, 67mph). Thus, this is the level of precision that will be used when resolving the market.
Revisions to the wind speed recorded within this market's timeframe will be considered until the first datapoint for the following month has been published, after which any alterations will not be considered.
The resolution source will be data published by the Mt. Washington Weather Observatory. F6 reports containing daily wind speed recordings can be found here: https://mountwashington.org/weather/mount-washington-weather-archives/monthly-f6/.
The resolution source for this market measures wind speeds to whole mile per hour (eg, 67mph). Thus, this is the level of precision that will be used when resolving the market.
Revisions to the wind speed recorded within this market's timeframe will be considered until the first datapoint for the following month has been published, after which any alterations will not be considered.
Market Opened: Aug 31, 2026, 1:06 PM ET
Volume
$0End Date
Oct 1, 2026Market Opened
Aug 31, 2026, 1:06 PM ETResolver
0x65070BE91...This market will resolve based on the highest wind speed, in miles per hour, reported on the summit of Mt. Washington in New Hampshire in September, 2026.
The resolution source will be data published by the Mt. Washington Weather Observatory. F6 reports containing daily wind speed recordings can be found here: https://mountwashington.org/weather/mount-washington-weather-archives/monthly-f6/.
The resolution source for this market measures wind speeds to whole mile per hour (eg, 67mph). Thus, this is the level of precision that will be used when resolving the market.
Revisions to the wind speed recorded within this market's timeframe will be considered until the first datapoint for the following month has been published, after which any alterations will not be considered.Mount Washington’s summit experiences peak September gusts primarily from strong pressure gradients tied to extratropical lows or the remnants of tropical cyclones, which historically have driven the month’s highest readings—such as the 174 mph record from Hurricane David’s remnants in 1979. The mountain’s topography funnels westerly flows, amplifying speeds via orographic effects and a lowering tropopause as seasonal cooling strengthens the jet stream. As of early September 2026, official observations from the Mount Washington Observatory and NWS show light winds under 30 mph amid fog and stable high pressure, with near-term forecasts indicating only modest increases to 40–46 mph gusts. Traders will watch subsequent National Hurricane Center outlooks and model runs for any late-season Atlantic systems, as even distant remnants can rapidly elevate daily maxima above the typical 90–100 mph range before month-end data release.
This market will resolve based on the highest wind speed, in miles per hour, reported on the summit of Mt. Washington in New Hampshire in September, 2026.
The resolution source will be data published by the Mt. Washington Weather Observatory. F6 reports containing daily wind speed recordings can be found here: https://mountwashington.org/weather/mount-washington-weather-archives/monthly-f6/.
The resolution source for this market measures wind speeds to whole mile per hour (eg, 67mph). Thus, this is the level of precision that will be used when resolving the market.
Revisions to the wind speed recorded within this market's timeframe will be considered until the first datapoint for the following month has been published, after which any alterations will not be considered.
The resolution source will be data published by the Mt. Washington Weather Observatory. F6 reports containing daily wind speed recordings can be found here: https://mountwashington.org/weather/mount-washington-weather-archives/monthly-f6/.
The resolution source for this market measures wind speeds to whole mile per hour (eg, 67mph). Thus, this is the level of precision that will be used when resolving the market.
Revisions to the wind speed recorded within this market's timeframe will be considered until the first datapoint for the following month has been published, after which any alterations will not be considered.
Volume
$0End Date
Oct 1, 2026Market Opened
Aug 31, 2026, 1:06 PM ETResolver
0x65070BE91...Mount Washington’s summit experiences peak September gusts primarily from strong pressure gradients tied to extratropical lows or the remnants of tropical cyclones, which historically have driven the month’s highest readings—such as the 174 mph record from Hurricane David’s remnants in 1979. The mountain’s topography funnels westerly flows, amplifying speeds via orographic effects and a lowering tropopause as seasonal cooling strengthens the jet stream. As of early September 2026, official observations from the Mount Washington Observatory and NWS show light winds under 30 mph amid fog and stable high pressure, with near-term forecasts indicating only modest increases to 40–46 mph gusts. Traders will watch subsequent National Hurricane Center outlooks and model runs for any late-season Atlantic systems, as even distant remnants can rapidly elevate daily maxima above the typical 90–100 mph range before month-end data release.
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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