**Trader sentiment strongly favors below-average September precipitation in Seattle, with the <1 inch bin leading at 53.5% implied probability.** Early-month data show only 0.36 inches through September 4 at Sea-Tac, consistent with the dry late-summer pattern. National Weather Service and ensemble forecasts indicate mostly dry, sunny conditions with low precipitation chances through mid-September, driven by ridging that suppresses marine influence and storm tracks. Seattle’s 1991–2020 climatological average is 1.6 inches, with the monthly total typically accumulating later in the period as the Pacific jet strengthens; however, current model consensus points to limited rainfall through at least the third week. This supports the market’s emphasis on totals remaining under 1.5 inches, as any late-month increase would need to be substantial to exceed the leading bins.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedPrecipitation in Seattle in September?
Precipitation in Seattle in September?
<1" 53%
1-1.5" 15%
1.5-2" 13%
2-2.5" 7%
NEW
NEW
Sep 30, 2026
<1"
53%
1-1.5"
15%
1.5-2"
13%
2-2.5"
7%
>4"
6%
3-4"
4%
2.5-3"
4%
<1" 53%
1-1.5" 15%
1.5-2" 13%
2-2.5" 7%
NEW
NEW
Sep 30, 2026
<1"
$384 Vol.
53%
1-1.5"
$278 Vol.
15%
1.5-2"
$298 Vol.
13%
2-2.5"
$241 Vol.
7%
>4"
$515 Vol.
6%
3-4"
$311 Vol.
4%
2.5-3"
$305 Vol.
4%
This market will resolve according to the total precipitation in inches in Seattle between September 1 and September 30, 2026, 11:59PM ET according to the National Oceanic and Atmospheric Administration (NOAA).
If the reported data falls exactly between two brackets, this market will resolve to the higher bracket.
The resolution source for this market will be NOAA, specifically the figure for September 2026 when the "Monthly summarized data" for "Seattle City Area" is selected with the variable set to "Precipitation" at the https://www.weather.gov/wrh/climate?wfo=sew link once that figure is finalized for the whole month of September 2026.
If the relevant data is not available by December 7, 2026, 11:59 PM ET, another credible resolution source will be chosen.
The resolution source for this market measures precipitation to 2 decimal places (e.g., 1.54), thus, this is the level of precision that will be used when resolving this market. Any revisions to precipitation recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.**Trader sentiment strongly favors below-average September precipitation in Seattle, with the <1 inch bin leading at 53.5% implied probability.** Early-month data show only 0.36 inches through September 4 at Sea-Tac, consistent with the dry late-summer pattern. National Weather Service and ensemble forecasts indicate mostly dry, sunny conditions with low precipitation chances through mid-September, driven by ridging that suppresses marine influence and storm tracks. Seattle’s 1991–2020 climatological average is 1.6 inches, with the monthly total typically accumulating later in the period as the Pacific jet strengthens; however, current model consensus points to limited rainfall through at least the third week. This supports the market’s emphasis on totals remaining under 1.5 inches, as any late-month increase would need to be substantial to exceed the leading bins.
This market will resolve according to the total precipitation in inches in Seattle between September 1 and September 30, 2026, 11:59PM ET according to the National Oceanic and Atmospheric Administration (NOAA).
If the reported data falls exactly between two brackets, this market will resolve to the higher bracket.
The resolution source for this market will be NOAA, specifically the figure for September 2026 when the "Monthly summarized data" for "Seattle City Area" is selected with the variable set to "Precipitation" at the https://www.weather.gov/wrh/climate?wfo=sew link once that figure is finalized for the whole month of September 2026.
If the relevant data is not available by December 7, 2026, 11:59 PM ET, another credible resolution source will be chosen.
The resolution source for this market measures precipitation to 2 decimal places (e.g., 1.54), thus, this is the level of precision that will be used when resolving this market. Any revisions to precipitation recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
If the reported data falls exactly between two brackets, this market will resolve to the higher bracket.
The resolution source for this market will be NOAA, specifically the figure for September 2026 when the "Monthly summarized data" for "Seattle City Area" is selected with the variable set to "Precipitation" at the https://www.weather.gov/wrh/climate?wfo=sew link once that figure is finalized for the whole month of September 2026.
If the relevant data is not available by December 7, 2026, 11:59 PM ET, another credible resolution source will be chosen.
The resolution source for this market measures precipitation to 2 decimal places (e.g., 1.54), thus, this is the level of precision that will be used when resolving this market. Any revisions to precipitation recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: Aug 31, 2026, 9:43 AM ET
Volume
$2,332End Date
Oct 1, 2026Market Opened
Aug 31, 2026, 9:43 AM ETResolver
0x69c47De9D...This market will resolve according to the total precipitation in inches in Seattle between September 1 and September 30, 2026, 11:59PM ET according to the National Oceanic and Atmospheric Administration (NOAA).
If the reported data falls exactly between two brackets, this market will resolve to the higher bracket.
The resolution source for this market will be NOAA, specifically the figure for September 2026 when the "Monthly summarized data" for "Seattle City Area" is selected with the variable set to "Precipitation" at the https://www.weather.gov/wrh/climate?wfo=sew link once that figure is finalized for the whole month of September 2026.
If the relevant data is not available by December 7, 2026, 11:59 PM ET, another credible resolution source will be chosen.
The resolution source for this market measures precipitation to 2 decimal places (e.g., 1.54), thus, this is the level of precision that will be used when resolving this market. Any revisions to precipitation recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.**Trader sentiment strongly favors below-average September precipitation in Seattle, with the <1 inch bin leading at 53.5% implied probability.** Early-month data show only 0.36 inches through September 4 at Sea-Tac, consistent with the dry late-summer pattern. National Weather Service and ensemble forecasts indicate mostly dry, sunny conditions with low precipitation chances through mid-September, driven by ridging that suppresses marine influence and storm tracks. Seattle’s 1991–2020 climatological average is 1.6 inches, with the monthly total typically accumulating later in the period as the Pacific jet strengthens; however, current model consensus points to limited rainfall through at least the third week. This supports the market’s emphasis on totals remaining under 1.5 inches, as any late-month increase would need to be substantial to exceed the leading bins.
This market will resolve according to the total precipitation in inches in Seattle between September 1 and September 30, 2026, 11:59PM ET according to the National Oceanic and Atmospheric Administration (NOAA).
If the reported data falls exactly between two brackets, this market will resolve to the higher bracket.
The resolution source for this market will be NOAA, specifically the figure for September 2026 when the "Monthly summarized data" for "Seattle City Area" is selected with the variable set to "Precipitation" at the https://www.weather.gov/wrh/climate?wfo=sew link once that figure is finalized for the whole month of September 2026.
If the relevant data is not available by December 7, 2026, 11:59 PM ET, another credible resolution source will be chosen.
The resolution source for this market measures precipitation to 2 decimal places (e.g., 1.54), thus, this is the level of precision that will be used when resolving this market. Any revisions to precipitation recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
If the reported data falls exactly between two brackets, this market will resolve to the higher bracket.
The resolution source for this market will be NOAA, specifically the figure for September 2026 when the "Monthly summarized data" for "Seattle City Area" is selected with the variable set to "Precipitation" at the https://www.weather.gov/wrh/climate?wfo=sew link once that figure is finalized for the whole month of September 2026.
If the relevant data is not available by December 7, 2026, 11:59 PM ET, another credible resolution source will be chosen.
The resolution source for this market measures precipitation to 2 decimal places (e.g., 1.54), thus, this is the level of precision that will be used when resolving this market. Any revisions to precipitation recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Volume
$2,332End Date
Oct 1, 2026Market Opened
Aug 31, 2026, 9:43 AM ETResolver
0x69c47De9D...**Trader sentiment strongly favors below-average September precipitation in Seattle, with the <1 inch bin leading at 53.5% implied probability.** Early-month data show only 0.36 inches through September 4 at Sea-Tac, consistent with the dry late-summer pattern. National Weather Service and ensemble forecasts indicate mostly dry, sunny conditions with low precipitation chances through mid-September, driven by ridging that suppresses marine influence and storm tracks. Seattle’s 1991–2020 climatological average is 1.6 inches, with the monthly total typically accumulating later in the period as the Pacific jet strengthens; however, current model consensus points to limited rainfall through at least the third week. This supports the market’s emphasis on totals remaining under 1.5 inches, as any late-month increase would need to be substantial to exceed the leading bins.
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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