CWG Live updates: Two days of broiling heat, then a retreat

Washington Post

4 days ago

Welcome to cwg.live, updated around-the-clock by Capital Weather Gang meteorologists.
Happening now: Temperatures rise quickly this morning amid high humidity and partly to mostly sunny skies. Afternoon highs reach the mid- to upper 90s, and heat indexes top 100.
What's next? Tomorrow is the hottest day of the week, and some evening thunderstorms could pop up. Storms are more widespread on Thursday before a cooling trend heading into the weekend.
Today's daily digit — 2/10: The searing heat is almost the worst of the summer. What a bummer. | 🤚 Your call?
The digit is a somewhat subjective rating of the day's weather, on a 0-to-10 scale.
Forecast in detail
Today (Tuesday): Heat builds quickly this morning with 80s moving into the 90s by midday. Into the afternoon, highs reach the mid- to upper 90s under partly to mostly sunny skies. Dew points in the 70s mean heat indexes reach 100 to 105. Be careful with outdoor activities and stay as hydrated as possible. Light breezes from the southwest at about 5 mph offer little relief on this not nice day. Confidence: High
Tonight: Partly cloudy, humid and quite uncomfortable as lows fall into the 70s. Areas near downtown could stall closer to 80. Light breezes from the south at about 5 mph. Confidence: High
Tomorrow (Wednesday): Our hottest day of the week sends highs into the upper 90s for most with partly to mostly sunny skies and high humidity. Heat indexes of 100 to 105 are again taxing for outdoor activities. A few scattered late-afternoon and evening thunderstorms are possible. Winds are from the southwest at about 5 mph. Confidence: Medium-High
Tomorrow night: A shower or thunderstorm is possible, but the main story is another very uncomfortable night with muggy 70s to near 80 for lows. Confidence: Medium-High
A look ahead
Thursday marks the start of the transition away from this very hot weather. Skies are partly to mostly cloudy with numerous showers and storms, especially in the afternoon and evening. It's still sticky with highs in the upper 80s and low 90s. Thursday night brings more scattered showers and storms as temperatures cool toward about 70 degrees by early Friday. Confidence: Medium
The first day of August on Friday sends the heat away, but clouds and scattered showers may linger, especially across the southern part of the area. Highs are in the much more comfortable upper 70s to low 80s. Friday night may still see a few clouds, but humidity is much lower as lows dip into the 60s. Confidence: Medium
The first weekend of August may be the nicest summer weekend we have seen in quite some time. Skies are mostly sunny both days and humidity levels are low. Saturday night should be mostly clear with lows in the 60s or even upper 50s in our cooler areas, as humidity stays suppressed. Confidence: Medium-High
The nicer weather continues early next week with low humidity and 80s for highs. But temperatures and humidity increase later in the week as highs near 90, and showers and storms also return to the forecast.
Today's daily digit — 2/10: The searing heat is almost the worst of the summer. What a bummer. | 🤚 Your call?
The digit is a somewhat subjective rating of the day's weather, on a 0-to-10 scale.
Forecast in detail
Today (Tuesday): Heat builds quickly this morning with 80s moving into the 90s by midday. Into the afternoon, highs reach the mid- to upper 90s under partly to mostly sunny skies. Dew points in the 70s mean heat indexes reach 100 to 105. Be careful with outdoor activities and stay as hydrated as possible. Light breezes from the southwest at about 5 mph offer little relief on this not nice day. Confidence: High
Tonight: Partly cloudy, humid and quite uncomfortable as lows fall into the 70s. Areas near downtown could stall closer to 80. Light breezes from the south at about 5 mph. Confidence: High
Tomorrow (Wednesday): Our hottest day of the week sends highs into the upper 90s for most with partly to mostly sunny skies and high humidity. Heat indexes of 100 to 105 are again taxing for outdoor activities. A few scattered late-afternoon and evening thunderstorms are possible. Winds are from the southwest at about 5 mph. Confidence: Medium-High
Tomorrow night: A shower or thunderstorm is possible, but the main story is another very uncomfortable night with muggy 70s to near 80 for lows. Confidence: Medium-High
A look ahead
Thursday marks the start of the transition away from this very hot weather. Skies are partly to mostly cloudy with numerous showers and storms, especially in the afternoon and evening. It's still sticky with highs in the upper 80s and low 90s. Thursday night brings more scattered showers and storms as temperatures cool toward about 70 degrees by early Friday. Confidence: Medium
The first day of August on Friday sends the heat away, but clouds and scattered showers may linger, especially across the southern part of the area. Highs are in the much more comfortable upper 70s to low 80s. Friday night may still see a few clouds, but humidity is much lower as lows dip into the 60s. Confidence: Medium
The first weekend of August may be the nicest summer weekend we have seen in quite some time. Skies are mostly sunny both days and humidity levels are low. Saturday night should be mostly clear with lows in the 60s or even upper 50s in our cooler areas, as humidity stays suppressed. Confidence: Medium-High
The nicer weather continues early next week with low humidity and 80s for highs. But temperatures and humidity increase later in the week as highs near 90, and showers and storms also return to the forecast.