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May 2026 ranked as the second-warmest May on record, trailing only 2024, with a global surface temperature 1.93°F (1.07°C) above the 20th-century average.
On April 13 2026, NOAA’s National Centers for Environmental Information (NCEI) released the Typical Meteorological Year (TMY) product to the U.S. public.
The average temperature for the contiguous U.S. in April was 54.79°F, 3.75°F above the 20th-century average, ranking as the third-warmest April on record.