How have the last 12 months compared with normal in the US?
Every month from September 2025 to August 2026 was warmer than its 1901–2000 average across the contiguous US. March 2026 stood out, 9.4°F above the March average; May 2026 was closest to normal, 1.5°F above. Each bar compares a month with the same month's average, so a warm January and a warm July are measured alike.
The interactive chart needs JavaScript. The numbers are in the table below.
The value axis starts at zero. Hover, tap or use the arrow keys to read exact values.
Source and date
- Data as of
- Published
The data
| Month | °F above (or below) that month's 1901–2000 average |
|---|---|
| Sep 2025 | 3.11 |
| Oct 2025 | 2.87 |
| Nov 2025 | 5 |
| Dec 2025 | 5.15 |
| Jan 2026 | 3 |
| Feb 2026 | 6.46 |
| Mar 2026 | 9.35 |
| Apr 2026 | 3.71 |
| May 2026 | 1.49 |
| Jun 2026 | 2.18 |
| Jul 2026 | 3.3 |
| Aug 2026 | 3.5 |