D.C.-area forecast: Heat builds while storms may produce their own fireworks


* Heat advisory for areas near Interstate 95 from noon to 8 p.m. *

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

4/10: Heat is in the works and a stormy pattern lurks; hopefully not timed to disrupt fireworks.

  • Today: Partly sunny, building humidity; afternoon storms possible. Highs: 89-94
  • Tonight: Showers/storms linger in the evening, humid with minimal wind. Lows: 68-76
  • Tomorrow: Partly cloudy, humid with showers/storms mainly in the afternoon. Highs: 89-95

Happy Fourth of July! After several pleasant days, heat and humidity make a strong return today and last into the weekend. The steamy air could fuel showers and storms, especially in the late afternoon and evening, each of the next three days. The hope is that the showers pass through before fireworks on the National Mall tonight, but rain gear would be a good idea. A weak cool front brings meager relief Sunday.

Today (Independence Day): Breezes from the southwest encourage humidity to come flooding back into the area (dew points climb into the low 70s). Highs mostly in the low 90s feel closer to 100 or even 105 factoring in the mugginess. Be sure to hydrate and take breaks if spending long times outside.

Clouds bubble up in the afternoon and a band of showers and storms is likely to push through the area between midafternoon and evening. Storms could produce dangerous lightning, heavy downpours and some strong wind gusts. Confidence: Medium-High

Tonight: Right now it looks like the bulk of the showers and storms should be moving east right around dusk, so post sunset fireworks displays should be possible in most areas. Winds are too light to move the smoke much and it will be steamy with temperatures in the 80s. Overnight lows range from upper 60s to mid-70s. Confidence: Medium-High

Follow us on Facebook, Twitter, and Instagram for the latest weather updates. Keep reading for the forecast through the weekend…

Tomorrow (Friday): Clouds are still around from yesterday’s storms but the sun should still break through and push highs mainly into the low-to-mid 90s; high humidity will make it feel about 10 degrees hotter. This should destabilize the atmosphere enough to set off more showers and storms mainly in the late afternoon. Winds are minimal except in storms. Confidence: Medium-High

Tomorrow night: The shower and storm threat lingers through the evening but should taper off after midnight. The night is a steamy one with lows ranging through the 70s. Confidence: Medium-High

Clouds diminish Saturday morning but rebuild in the afternoon as a cool front to the north gets a gentle nudge our way. This will set off another round of scattered afternoon showers and storms that could linger well into the night. It remains uncomfortably hot and humid with highs in the upper 80s to lower 90s and lows in the upper 60s to mid-70s. Confidence: Medium-High

Hopefully the cool front will have enough momentum to push a little drier air into the area on Sunday. The expectation is for highs to still reach the upper 80s to lower 90s. While a stray storm can’t be ruled out, the bulk of the activity should focus to our east and south. Overnight lows slip to the mid-60s to lower 70s. Confidence: Medium

Monday should still be only moderately humid with highs again in the upper 80s to lower 90s under fairly sunny skies for a tolerable start to the new week. Confidence: Medium





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