CWG Live updates: Storms later today could be severe; big heat wave starts Sunday

Washington Post

19-06-2025

Welcome to cwg.live, updated around-the-clock by Capital Weather Gang meteorologists.
Happening now: Temperatures rise quickly through the 80s under sunny morning skies. Afternoon highs in the low 90s and high humidity fuel late afternoon and evening storms that could become severe.
What's next? Friday is much calmer with highs in the 80s under sunny skies. Heat builds over the weekend and highs may approach 100 by early next week.
Today's daily digit — 4/10: Heat and humidity build setting off potentially severe storms, downpours, and gusty winds. | 🤚 Your call?
The digit is a somewhat subjective rating of the day's weather, on a 0-to-10 scale.
Forecast in detail
Today (Thursday): Lots of sun warms the area quickly and humidity is high (dew points in low 70s) amid moderate breezes from the southwest. Highs should reach the lower 90s before clouds build and set off potentially severe thunderstorms heading into the evening. Look out for heavy downpours and the potential for damaging winds. Confidence: Medium-High
Tonight: Storms are likely in the evening before moving off around sunset in our eastern areas. Lows drop into the 60s with clearing skies. Confidence: Medium-High
Tomorrow (Friday): A northwest breeze should start to lower the humidity (dew points dropping into the low 60s) but abundant sunshine pushes highs into the mid- to upper 80s. Confidence: Medium-High
Tomorrow night: The evening is pleasantly less humid with readings falling from the lower 80s to upper 70s. The summer solstice arrives at 10:42 p.m. with overnight lows in the mid- to upper 60s. Confidence: Medium-High
A look ahead
Saturday's temperatures edge higher with highs in the upper 80s to lower 90s and moderate humidity (dew points in the mid-60s). Plenty of sun is on the docket before a mostly clear night and lows in the upper 60s to low 70s. Confidence: Medium-High
The heart of the heat, building in the middle of the country, stretches into the Mid-Atlantic by Sunday. Expect plenty of sun and highs in the mid-90s or so as humidity levels become more uncomfortable (dew points near 70). Confidence: Medium-High
Monday and Tuesday are mostly sunny and oppressively hot with highs around 95 to 100, while high humidity (dew points in the low 70s) makes it feel like 100 to 110. Muggy nighttime lows only slip into the 70s to near 80. Confidence: Medium
Today's daily digit — 4/10: Heat and humidity build setting off potentially severe storms, downpours, and gusty winds. | 🤚 Your call?
The digit is a somewhat subjective rating of the day's weather, on a 0-to-10 scale.
Forecast in detail
Today (Thursday): Lots of sun warms the area quickly and humidity is high (dew points in low 70s) amid moderate breezes from the southwest. Highs should reach the lower 90s before clouds build and set off potentially severe thunderstorms heading into the evening. Look out for heavy downpours and the potential for damaging winds. Confidence: Medium-High
Tonight: Storms are likely in the evening before moving off around sunset in our eastern areas. Lows drop into the 60s with clearing skies. Confidence: Medium-High
Tomorrow (Friday): A northwest breeze should start to lower the humidity (dew points dropping into the low 60s) but abundant sunshine pushes highs into the mid- to upper 80s. Confidence: Medium-High
Tomorrow night: The evening is pleasantly less humid with readings falling from the lower 80s to upper 70s. The summer solstice arrives at 10:42 p.m. with overnight lows in the mid- to upper 60s. Confidence: Medium-High
A look ahead
Saturday's temperatures edge higher with highs in the upper 80s to lower 90s and moderate humidity (dew points in the mid-60s). Plenty of sun is on the docket before a mostly clear night and lows in the upper 60s to low 70s. Confidence: Medium-High
The heart of the heat, building in the middle of the country, stretches into the Mid-Atlantic by Sunday. Expect plenty of sun and highs in the mid-90s or so as humidity levels become more uncomfortable (dew points near 70). Confidence: Medium-High
Monday and Tuesday are mostly sunny and oppressively hot with highs around 95 to 100, while high humidity (dew points in the low 70s) makes it feel like 100 to 110. Muggy nighttime lows only slip into the 70s to near 80. Confidence: Medium