Particle.news

Download on the App Store

Weekend Cooldown Gives Way to Sunday Heat and Storm Risks

An approaching cold front is set to deliver cooler, drier air for next week’s July 4th celebrations

Image
Image
Image
Senate Majority Leader John Thune, Republican of South Dakota, speaks to reporters at the US Capitol in Washington, DC, on June 27, 2025.

Overview

  • Saturday brought a brief respite from multi-day highs in the mid-90s as lake breezes and high pressure kept Chicago’s lakefront in the mid-70s and Baltimore near 79°F
  • High humidity and sunshine will drive Sunday temperatures back into the mid-90s with heat indices topping 100°F across the region
  • Scattered and potentially slow-moving thunderstorms are expected Sunday afternoon and evening, raising the threat of downpours, gusty winds and localized flash flooding
  • Early next week, a cold front will shift winds eastward and usher in below-average temperatures along with significantly lower humidity
  • Dry, comfortable air behind the front should bring sunny skies, highs in the upper 80s and clear evenings for Maryland’s July 4th activities