Market icon

Highest temperature in Chicago on March 28?

Market icon

Highest temperature in Chicago on March 28?

Mar 27

Mar 28

Mar 29

Mar 27

Mar 28

Mar 29

48-49°F 34%

50-51°F 22%

46-47°F 21%

44-45°F 13%

Polymarket

$58,961 Vol.

48-49°F 34%

50-51°F 22%

46-47°F 21%

44-45°F 13%

Polymarket

$58,961 Vol.

43°F or below

$8,021 Vol.

4%

44-45°F

$3,201 Vol.

13%

46-47°F

$3,020 Vol.

21%

48-49°F

$2,926 Vol.

34%

50-51°F

$2,626 Vol.

22%

52-53°F

$3,777 Vol.

5%

54-55°F

$3,832 Vol.

2%

56-57°F

$4,517 Vol.

1%

58-59°F

$5,974 Vol.

<1%

60-61°F

$2,807 Vol.

<1%

62°F or higher

$18,261 Vol.

<1%

This market will resolve to the temperature range that contains the highest temperature recorded at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 28 Mar '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Chicago O'Hare Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/il/chicago/KORD. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve to "Yes" until all data for this date has been finalized. The resolution source for this market measures temperatures to whole degrees Fahrenheit (eg, 21°F). Thus, this is the level of precision that will be used when resolving the market. Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Trader consensus on Polymarket reflects tight clustering around 46-51°F for Chicago O'Hare's highest temperature on March 28, driven by National Weather Service forecasts calling for sunny skies and highs near 49°F following a cold front that capped March 27 at 38°F amid gusty north-northwest winds. Ensemble model guidance from GFS and ECMWF shows convergence in the upper 40s, though short-range HRRR runs and Canadian GEM outliers suggest potential for low-50s peaks or rare warmer spikes if mixing enhances boundary layer warming. Differentiating factors include residual cloud breaks allowing greater insolation versus lingering thin overcast, plus subtle wind deceleration from 10-15 mph NNW, with late-March climatological highs averaging 48°F providing context. Hourly KORD observations today will sharpen resolution amid typical diurnal uncertainty.

Trader consensus on Polymarket reflects tight clustering around 46-51°F for Chicago O'Hare's highest temperature on March 28, driven by National Weather Service forecasts calling for sunny skies and highs near 49°F following a cold front that capped March 27 at 38°F amid gusty north-northwest winds. Ensemble model guidance from GFS and ECMWF shows convergence in the upper 40s, though short-range HRRR runs and Canadian GEM outliers suggest potential for low-50s peaks or rare warmer spikes if mixing enhances boundary layer warming. Differentiating factors include residual cloud breaks allowing greater insolation versus lingering thin overcast, plus subtle wind deceleration from 10-15 mph NNW, with late-March climatological highs averaging 48°F providing context. Hourly KORD observations today will sharpen resolution amid typical diurnal uncertainty.

Experimental AI-generated summary referencing Polymarket data · Updated
This market will resolve to the temperature range that contains the highest temperature recorded at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 28 Mar '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Chicago O'Hare Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/il/chicago/KORD. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve to "Yes" until all data for this date has been finalized. The resolution source for this market measures temperatures to whole degrees Fahrenheit (eg, 21°F). Thus, this is the level of precision that will be used when resolving the market. Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Trader consensus on Polymarket reflects tight clustering around 46-51°F for Chicago O'Hare's highest temperature on March 28, driven by National Weather Service forecasts calling for sunny skies and highs near 49°F following a cold front that capped March 27 at 38°F amid gusty north-northwest winds. Ensemble model guidance from GFS and ECMWF shows convergence in the upper 40s, though short-range HRRR runs and Canadian GEM outliers suggest potential for low-50s peaks or rare warmer spikes if mixing enhances boundary layer warming. Differentiating factors include residual cloud breaks allowing greater insolation versus lingering thin overcast, plus subtle wind deceleration from 10-15 mph NNW, with late-March climatological highs averaging 48°F providing context. Hourly KORD observations today will sharpen resolution amid typical diurnal uncertainty.

Trader consensus on Polymarket reflects tight clustering around 46-51°F for Chicago O'Hare's highest temperature on March 28, driven by National Weather Service forecasts calling for sunny skies and highs near 49°F following a cold front that capped March 27 at 38°F amid gusty north-northwest winds. Ensemble model guidance from GFS and ECMWF shows convergence in the upper 40s, though short-range HRRR runs and Canadian GEM outliers suggest potential for low-50s peaks or rare warmer spikes if mixing enhances boundary layer warming. Differentiating factors include residual cloud breaks allowing greater insolation versus lingering thin overcast, plus subtle wind deceleration from 10-15 mph NNW, with late-March climatological highs averaging 48°F providing context. Hourly KORD observations today will sharpen resolution amid typical diurnal uncertainty.

Experimental AI-generated summary referencing Polymarket data · Updated

Beware of external links.

Frequently Asked Questions

"Highest temperature in Chicago on March 28?" is a prediction market on Polymarket with 11 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "48-49°F" at 34%, followed by "50-51°F" at 22%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 34¢ implies that the market collectively assigns a 34% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "Highest temperature in Chicago on March 28?" has generated $59K in total trading volume since the market launched on Mar 24, 2026. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "Highest temperature in Chicago on March 28?," browse the 11 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Highest temperature in Chicago on March 28?" is "48-49°F" at 34%, meaning the market assigns a 34% chance to that outcome. The next closest outcome is "50-51°F" at 22%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Highest temperature in Chicago on March 28?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.