Dangerous heat wave to spread across the Western and Central US, maximum temperatures up to 43°C (110°F)
The first widespread and significant heat wave of the summer is forecast to develop across the Intermountain West and Plains beginning Friday, July 10, 2026. Widespread temperatures above 38°C (100°F) are forecast, with isolated highs of up to 43°C (110°F). The Weather Prediction Center (WPC) forecasts widespread Major (Level 3) to locally Extreme (Level 4) HeatRisk between Friday and Wednesday, July 10 and 15.


