Hottest London/Paris CDD’s On Record
08/05/2026, 4:57 am EDT
Climate Impact Company Midday Update
Issued: Friday August 7, 2026
Highlight: Northeast becomes cool corner; Central U.S. is hot!
Comment: Super heat in Europe, especially France and vicinity, continues through 15 days (12Z GFS).
Fig. 1-3: The 12Z GFS U.S. medium range temperature anomalies outlook and 15-day East U.S. percent of normal rainfall outlook.
Discussion: Cool relief for the Northeast U.S. according to the 12Z GFS while Mid-south heat is intense days 6-10 (Fig. 1) and widens days 11-15 from the Great Plains to the Southeast U.S. (Fig. 2). The 12Z GFS maintains an arc of heavy rain and severe weather from the Midwest U.S. to the Mid-Atlantic States (Fig. 3).
| CDD EIA End | Forecast | 12-Hour Change | 24-Hour Change | 30-Year Normal | 10-Year Normal |
| 8/13 | 100.1 | +1.3 | +0.4 | 76.5 | 83.2 |
| 8/20 | 88.1 | +16.1 | +12.7 | 73.5 | 79.3 |
| 8/27 | 76.8 | +2.4 | +1.1 | 69.4 | 74.2 |
Table 1: The midday 12Z GFS U.S. population weight CDD forecast into late August.