TOTAL VOLUME:

$134.2b

24H VOL:

$143,246,370

24H TRANSACTIONS:

2,403,290,006

OPEN INTEREST:

$1,452,035,386

405,032

Markets across

30,543

events

MATCHED EVENTS:

2,690

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Where will it rain on the 4th of July?
kalshi
polymarket

Where will it rain on the 4th of July?

Volume:
$241,136

Miami

 - Kalshi

Miami - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jul 6, 2026

Closed: Jul 4, 11:59 PM EST

kalshi

Kalshi

View
Join Kalshi and score $25 for your first trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Miami

View
100%
Yes 100¢No 0¢
100¢
N/A
$66,807
N/A
N/A
$63,409
Settled
Yes
kalshi

Washington DC

100%
Yes 100¢No 0¢
100¢
N/A
$19,991
N/A
N/A
$11,168
Settled
Yes
polymarket

Washington D.C.

100%
Yes 100¢No 0¢
1¢
N/A
$5,706
N/A
N/A
N/A
Settled
Yes
kalshi

New York City

100%
Yes 100¢No 0¢
100¢
N/A
$9,365
N/A
N/A
$4,709
Settled
Yes
polymarket

New York City

100%
Yes 100¢No 0¢
1¢
N/A
$162
N/A
N/A
N/A
Settled
Yes
kalshi

Chicago

100%
Yes 100¢No 0¢
100¢
N/A
$7,345
N/A
N/A
$3,991
Settled
Yes
kalshi

Philadelphia

100%
Yes 100¢No 0¢
100¢
N/A
$6,874
N/A
N/A
$3,968
Settled
Yes
kalshi

Minneapolis

100%
Yes 100¢No 0¢
100¢
N/A
$6,852
N/A
N/A
$2,285
Settled
Yes
kalshi

Boston

100%
Yes 100¢No 0¢
100¢
N/A
$6,130
N/A
N/A
$3,256
Settled
Yes
polymarket

Boston

100%
Yes 100¢No 0¢
1¢
N/A
$318
N/A
N/A
N/A
Settled
Yes
kalshi

Oklahoma City

100%
Yes 100¢No 0¢
100¢
N/A
$4,864
N/A
N/A
$1,450
Settled
Yes
kalshi

Phoenix

0%
Yes 0¢No 100¢
100¢
N/A
$27,137
N/A
N/A
$4,591
Settled
No
kalshi

Las Vegas

0%
Yes 0¢No 100¢
100¢
N/A
$22,275
N/A
N/A
$6,108
Settled
No
kalshi

Seattle

0%
Yes 0¢No 100¢
100¢
N/A
$9,700
N/A
N/A
$4,073
Settled
No
kalshi

Dallas

0%
Yes 0¢No 100¢
100¢
N/A
$8,802
N/A
N/A
$3,750
Settled
No
polymarket

Dallas

0%
Yes 0¢No 100¢
—
N/A
$551
N/A
N/A
N/A
Settled
No
kalshi

New Orleans

0%
Yes 0¢No 100¢
100¢
N/A
$8,036
N/A
N/A
$3,377
Settled
No
kalshi

Denver

0%
Yes 0¢No 100¢
100¢
N/A
$7,111
N/A
N/A
$2,578
Settled
No
polymarket

Denver

0%
Yes 0¢No 100¢
—
N/A
$651
N/A
N/A
N/A
Settled
No
kalshi

Houston

0%
Yes 0¢No 100¢
100¢
N/A
$6,839
N/A
N/A
$2,214
Settled
No
kalshi

San Francisco

0%
Yes 0¢No 100¢
100¢
N/A
$6,838
N/A
N/A
$3,757
Settled
No
polymarket

San Francisco

0%
Yes 0¢No 100¢
—
N/A
$442
N/A
N/A
N/A
Settled
No
kalshi

Austin

0%
Yes 0¢No 100¢
100¢
N/A
$4,281
N/A
N/A
$2,907
Settled
No
kalshi

San Antonio

0%
Yes 0¢No 100¢
100¢
N/A
$3,471
N/A
N/A
$2,485
Settled
No
polymarket

Atlanta

0%
Yes 0¢No 100¢
—
N/A
$588
N/A
N/A
N/A
Settled
No
Total markets: 25 of 27

Description

This event group asks whether it will rain on July 4, 2026, across major U.S. cities. Kalshi covers 20 cities with a simple precipitation threshold (>0 inches), while Polymarket offers granular markets for 5 specific cities (Dallas, Atlanta, NYC, San Francisco, Boston, Washington D.C., Denver) with explicit trace rain exclusions and NOAA data finalization deadlines.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Scope divergence (20 cities vs 5-7 cities), trace rain treatment (implicit vs explicit exclusion), and data finalization deadline (absent vs July 31, 2026 cutoff) create different resolution pathways and risk profiles.Hero tip: Polymarket markets are stricter and carry deadline risk. Kalshi markets are broader but ambiguous on trace rain. If trading both, expect Polymarket to resolve NO more often on marginal precipitation days. Prioritize Polymarket data finalization monitoring.

Critical divergence points:

  • Kalshi: Covers 20 major U.S. cities (NYC, Minneapolis, Denver, DC, Houston, Chicago, Seattle, Austin, Miami, San Antonio, Dallas, Oklahoma City, Las Vegas, San Francisco, Philadelphia, Boston, Atlanta, Los Angeles, New Orleans, Phoenix). Resolves YES if precipitation at any station is strictly greater than 0 inches. No explicit trace rain exclusion or data deadline. Quote: 'If the total precipitation at [STATION] in [CITY] in Jul 4, 2026 is strictly greater than 0 inches, then the market resolves to Yes.'
  • Polymarket: Covers 5-7 specific cities (Dallas, Atlanta, NYC, San Francisco, Boston, Washington D.C., Denver) with individual markets. Resolves YES only if precipitation is recorded and is greater than 0 inches, explicitly excluding trace rain marked as 'T'. Data must be finalized by July 31, 2026, 11:59 PM ET or market resolves NO. Quote: 'Trace rain, specified by a "T" in the named column, will not qualify toward a "Yes" resolution. If the relevant data is not made available by July 31, 2026, 11:59PM ET, this market will resolve to "No".'
Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.

Polymarket

This market will resolve to “Yes” if any precipitation is recorded at the specified weather station on the specified date. Otherwise, this market will resolve to “No”. This market will resolve according to the total precipitation in inches in the specified weather station on June 10, 2026 according to the National Oceanic and Atmospheric Administration (NOAA). The resolution source for this market will be NOAA, specifically the figure for the specified date when the “Daily data for a month” for “specified station” is selected with the variable set to “Precipitation” at the https://www.weather.gov/wrh/climate link once that figure is finalized for the specified date. Trace rain, specified by a “T” in the named column, will not qualify toward a “Yes” resolution. 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 relevant data is not made available by July 12, 2026, 11:59PM ET, this market will resolve to "No".

Kalshi

Resolution is determined by total precipitation recorded on July 4, 2026 at each specified city location, as reported in the National Weather Service's Climatological Report (Daily). Each city has its own independent outcome that resolves to Yes if total precipitation is strictly greater than 0 inches. Trace amounts (T) and missing daily precipitation values are treated as 0 inches and do not trigger a Yes resolution. Official data must be sourced from the NWS Climatological Report (Daily) accessed through the respective regional Weather Forecast Office pages, with each location having a designated reporting station (Central Park NY, Chicago-Midway IL, Austin Bergstrom, Miami FL, Denver CO, Philadelphia PA, Los Angeles Airport, Las Vegas NV, New Orleans LA, San Francisco Airport, Washington-National, Seattle-Tacoma WA, Boston Logan Airport, Phoenix AZ, Atlanta GA, Minneapolis/St Paul MN, Dallas/Fort Worth TX, San Antonio, Houston-Hobby TX, and Oklahoma City Will Rogers Airport). Traders should note that preliminary NWS data may be subject to rounding and conversion nuances, and the final official values from the Climatological Report (Daily) take precedence over other weather sources.

Frequently asked questions

The July 4th rainfall prediction market dashboard aggregates trader positions across Polymarket and Kalshi, tracking real-time odds on where precipitation will occur on Independence Day. This market captures consensus forecasts by monitoring how traders price rainfall probabilities across different U.S. locations. The dashboard displays current implied chances, trading volume, and price movements, allowing participants to compare how each platform values the same weather outcome. By consolidating data from multiple venues, the dashboard reveals whether traders on different platforms agree on rainfall likelihood or diverge based on their respective user bases and market mechanics.

Prediction market odds reflect real-money trader sentiment and aggregate dispersed information, often diverging from traditional meteorologist forecasts. While weather analysts rely on physics-based models and historical data, market participants incorporate those forecasts plus their own expectations, creating a dynamic price discovery mechanism. This market's odds can move faster than official updates when new weather data emerges or when traders reassess probabilities. Comparing the two reveals whether the crowd is more or less confident than experts, and which signals—satellite imagery, pressure systems, or seasonal patterns—are driving trader behavior at any given moment.

Updated weather models, satellite imagery, and atmospheric pressure systems are the primary catalysts for price swings in this market. Major weather pattern shifts—such as a jet stream change or tropical system development—can rapidly reprrice rainfall odds. Real-time meteorologist statements and National Weather Service advisories often trigger trader repositioning. Seasonal climate data, ocean temperatures, and historical July 4th precipitation patterns also influence longer-term positioning. As the event date approaches, intraday weather updates and radar confirmations typically drive final price discovery and volatility spikes.