Trader consensus on Polymarket heavily favors March 2026 ranking 4th or lower globally (97.2% implied probability), driven by the ongoing transition from the record 2023-24 El Niño—responsible for the top three warmest Marches on record (2024 at 1.16°C above 20th-century average per NOAA, followed by 2023 and 2016)—to a developing La Niña phase expected through early 2026. La Niña typically cools global surface temperatures by 0.2-0.5°C via altered Pacific wind patterns and ocean heat release, aligning with NOAA's latest ENSO outlook confirming 69% odds through Q1 2025. Historical analogs during La Niña show March anomalies well below El Niño peaks, supported by ECMWF seasonal forecasts projecting moderated warmth amid continued anthropogenic trends. Challenges could arise from an improbable rapid El Niño return or persistent marine heatwaves, with key updates from NOAA monthly outlooks and Copernicus reports ahead.
Experimental AI-generated summary referencing Polymarket data · Updated2026 March 1st, 2nd, 3rd hottest on record?
2026 March 1st, 2nd, 3rd hottest on record?
4th or lower 97.2%
1st hottest <1%
3rd hottest <1%
2nd hottest <1%
$148,275 Vol.
$148,275 Vol.
1st hottest
1%
2nd hottest
<1%
3rd hottest
1%
4th or lower
97%
4th or lower 97.2%
1st hottest <1%
3rd hottest <1%
2nd hottest <1%
$148,275 Vol.
$148,275 Vol.
1st hottest
1%
2nd hottest
<1%
3rd hottest
1%
4th or lower
97%
Note: If March 2026 is tied for first, second, or third hottest with another year, it will qualify for the bracket it ties with.
The primary resolution source for this market will be the figures found in the table titled "GLOBAL Land-Ocean Temperature Index in 0.01 degrees Celsius" under the column "Mar" (https://data.giss.nasa.gov/gistemp/tabledata_v4/GLB.Ts+dSST.txt). If NASA's "Global Temperature Index" is rendered permanently unavailable, other information from NASA may be used.
If no information for March 2026 is provided by NASA by April 30, 2026, 11:59 PM ET, a consensus of credible sources will be used to resolve this market.
Market Opened: Feb 26, 2026, 5:45 PM ET
Resolver
0x69c47De9D...Resolver
0x69c47De9D...Trader consensus on Polymarket heavily favors March 2026 ranking 4th or lower globally (97.2% implied probability), driven by the ongoing transition from the record 2023-24 El Niño—responsible for the top three warmest Marches on record (2024 at 1.16°C above 20th-century average per NOAA, followed by 2023 and 2016)—to a developing La Niña phase expected through early 2026. La Niña typically cools global surface temperatures by 0.2-0.5°C via altered Pacific wind patterns and ocean heat release, aligning with NOAA's latest ENSO outlook confirming 69% odds through Q1 2025. Historical analogs during La Niña show March anomalies well below El Niño peaks, supported by ECMWF seasonal forecasts projecting moderated warmth amid continued anthropogenic trends. Challenges could arise from an improbable rapid El Niño return or persistent marine heatwaves, with key updates from NOAA monthly outlooks and Copernicus reports ahead.
Experimental AI-generated summary referencing Polymarket data · Updated
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