DC-area forecast: Nonstop steaminess with possible storms nearly daily

DC-area forecast: Nonstop steaminess with possible storms nearly daily

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A somewhat subjective rating of the day’s weather, on a scale of 0 to 10.

4/10: Slight improvements over Friday include pinch lower heat-index values ​​and temperatures, along with slightly less chance of showers and storms. Still, one or two flooding downpours are possible.

  • Today: Shower/storm chance, especially pm Highs: Upper 80s to low 90s.
  • Tonight: Slight shower/storm chance. Muggy. Lows: Mid- to upper 70s.
  • Tomorrow: Slight shower/storm chance. Highs: Near-90 to mid-90s.

In a bit of a rinse-and-repeat that we’re used to during the dog days of summer, DC has virtually nonstop mugginess ahead and essentially daily chances for showers and storms — especially during the afternoon and evening hours. Please quickly move to safety when you hear thunder. Monday may still be the day with the lowest chances of rain, in case you can focus outdoor activities then.

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Today (Saturday): With soupy dew points in the mid-70s likely, heat-index values ​​in the mid-90s are probable in the hottest and steamiest spots. The thermometer may top out in the upper 80s to low 90s. Skies are partly to mostly cloudy, but we may end up seeing a bit more sunshine than Friday.

A few raindrops are possible most anytime during the day, but the main (and only moderate) chance for showers and storms starts around midafternoon. Storms should be less numerous than Friday, but one or two storms could still be strong to severe. We have a slight 5 to 10 percent chance of a flooding downpour or two. Moderate afternoon southerly breezes around 10-15 mph are possible. Confidence: Medium-High

Tonight: An evening chance for showers and storms may extend closer to midnight, but any rain activity should dwindle in intensity and coverage before then. Skies likely stay mostly cloudy, even after any rain ends. Mid- to upper 70s are the best we can do for low temperatures. Oof. Thank dew points in the mid-70s that prevent the atmosphere from cooling much below that level. Confidence: Medium-High

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Tomorrow (Sunday): Skies may offer a hair more sunshine than Saturday, and corresponding (hair lower) shower and storm chances. With more sunshine, high temperatures rise a bit more to near 90 into the mid-90s. As the afternoon wears on, though, remember to head indoors if thunder roars. A few storms may pop throughout the region, especially from midafternoon onward.

Moderate south-southwest breezes may be noticeable during the afternoon hours. Do I even need to mention how humid it will feel? Well, heat index values ​​around 100 degrees are possible — that’s the combination of humidity with air temperature. Confidence: Medium-High

Tomorrow night: After sunset, rain chances drop, but they’re not completely out. A slight chance for a shower or storm exists until the early morning hours. Skies slowly clear, and any breezes calm, as we approach dawn. Sultry low temperatures hover in the mid- to upper 70s. Confidence: Medium

Steaminess may continue Monday and Tuesday, with high temperatures in the low to mid-90s. Dew points may not slide much, if at all, as once thought. This means heat index values ​​in the low 100s are possible. Rain chances remain lowest on Monday vs. Tuesday. Still, a shower and storm chance can’t be ruled out either day — especially during afternoon and evening hours. Low temperatures merely get down into the usual range lately, the mid- to upper 70s. Confidence: Medium

Read more about Capital Weather Gang’s confidence rating.

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