May 2026 - Page 7 of 8 - Climate Impact Company

News

05/05/2026, 9:24 am EDT

Broadening U.S. Warmth Ahead; Includes Mid-Atlantic

ECMWF broadens high pressure across the U.S. centered on the Great Plains later this month. Support from other models is favoring this solution although some AI models re-cool the East. The sensible weather is widespread anomalous warmth and increasing Great plains hot weather risk. The Southwest U.S. encounters early season clouds/thundershowers.

05/04/2026, 5:28 am EDT

Updated Summer 2026 Outlook: Hot Northwest/West and Gulf States; Wet Midwest; Late Summer Drought Mid-south/Texas

The updated Climate Impact Company summer 2026 outlook indicates a hotter than normal summer season across much of the U.S., especially the Northwest to California and Gulf States while wet climate suppresses anomalous heat risk in the Midwest. Drought expands northwestward in the West and develops Mid-south to Texas later in the summer season.

05/03/2026, 3:00 pm EDT

Models Continue Too Wet Central and Southeast Forecasts Both 16-day AND 16-30-Day

Forecast bias has generally been too wet so far this spring in the Central U.S. Included in that bias are the extended range 16-30-day forecasts. Borth ECM and CFS V2 are too wet in the Great Plains and Southeast U.S. during the past 30 days although ECM is less wet in the Central U.S.

05/03/2026, 11:44 am EDT

Update: U.S. Population Weight CDD Forecast May-September 2026

The Climate Impact Company U.S. population weight CDD forecast for the 2026 warm season (Fig. 1) averages near or slightly below normal. The MAY/JUN (national) forecast is warm, near the 10-year normal, but lacking extreme heat as observed during MAY/JUN 2024 and JUN 2025. The JUL 2026 forecast is slightly below the 10-year normal and similar with the past 2 mid-summer(s). The AUG/SEP 2026 forecast is similar with 2024 and much warmer than last AUG. The hot bias for the warm season 2026 is in the West with marginal warmth in the high population East Coast.