March’s persistent unseasonable heat was so intense that the continental United States registered its most abnormally hot month in 132 years of records, according to federal weather data. And the hottest winter of record.”April 2025 to March 2026 was the warmest 12-month period on record in the continental United States, according to Noaa. On 20 and 21 March, about one-third of the nation felt unseasonable heat that would have been virtually impossible without human-caused climate change, Climate Central calculated. More than 2,000 places set monthly records for heat – harder to break than daily records – Walton calculated. That’s more March heat records set just last month than in entire decades in the past.

Source: The Guardian April 09, 2026 15:28 UTC