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Early season heat wave starts Friday through the weekend in DC area; Record highs possible

WJLA – Washington D.C. logo WJLA – Washington D.C. 5/21/2022 StormWatch7 Meteorologist Alex Liggitt

We’re entering the first heat wave of the season and year with highs in the 90s Friday through Sunday. While this is statistically around the average first 90-degree day of the year, this isn’t necessarily typical of the first heatwave or temperatures this hot so early in the season.

SEE ALSO | Beat the heat! Temps could reach above 90 degrees this week, here are 7 tips to stay cool

Highs on Friday will creep into the lower and mid-90s in the afternoon with a noticeable uptick in humidity as dewpoints creep into the mid-60s. It will likely feel like the mid to possibly upper 90s at times through the afternoon.

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A Tornado Watch was issued for parts of the DMV until 7 p.m.

The combination of high heat and humidity will continue Saturday and Sunday. Highs Saturday will likely be the hottest of the heatwave, approaching the mid-90s into the afternoon. This may challenge record highs for the day and may be one of the hottest days so early in the season.


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There are a number of outdoor events this weekend that may be potentially hazardous to your health if you’re not being cognizant and taking necessary precautions. Be sure to hydrate properly, take breaks in the A/C and don’t forget to check on your friends, neighbors, relatives and pets with this early season heat.

Here are the warning signs of a heat-related illness:

  • Being thirsty
  • Muscle cramps
  • Vomiting
  • Feeling sick to the stomach
  • Dizziness
  • Feeling like you might be about to faint, even if you don’t faint
  • Being flushed or clammy
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7News is On Your Side with 7 ways that you can prevent heat illness and stay safe in the heat: Click here for more.

Looking back at 150 years of data, there have only been 15 times this early in the season where the temperature reached 95 or 96 degrees. This kind of heat is more typical in the mid to late summer months of July and August.

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A cold front will slowly approach the region on Sunday afternoon into the evening bringing with it the chance for showers and thunderstorms. A few storms may be on the strong side with damaging winds and heavy rainfall. The heatwave will break into Monday with temperatures back in the 70s to start next week.


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