Today is tuesday): Another dangerously sunny day, with temperatures in the low 90s to low 100s, and heat index values soaring to near 110 due to high humidity (dew point near 70). Be extra cautious about outdoor activities and limit them if possible. Southwest winds gusting 5 to 10 mph didn't help either. Today's all-time high is 104 since 1988 for all three major reporting stations (Washington, Dulles, Baltimore), so we're probably going to be slightly under that number. Isolated pop-up showers and thunderstorms are possible but unlikely in the evening in most places. Reliability: high
tonight: It will be partly cloudy and muggy, with temperatures in the 70s to 80s in most urban areas. The breeze was blowing from the south near 10 mph. Reliability: high
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Tomorrow (Wednesday): Mostly sunny and still very hot, with highs reaching 90 degrees (100 degrees still possible), but increasing clouds in the afternoon and more widespread thunderstorms in the late afternoon to early evening should dissipate the heat more quickly. Some storms can be severe, with heavy downpours and strong wind gusts. Otherwise, winds will again be southwest at 5 to 10 mph. Reliability: high
Tomorrow evening: Mainly evening showers and thunderstorms, then partly sunny, with lows around 70 degrees. Trust: medium to high
Looking to the future
Thursday We should see partly to mostly cloudy skies with a cool front lingering around the area. Scattered showers and thunderstorms are expected to be most common in the southern to eastern parts of the region, with highs around 80 degrees. Showers or storms are still possible Thursday night, with partly cloudy skies and lows in the 60s to near 70s.
Friday Skies will be partly to mostly clear, highs will be in the mid to upper 80s again, and the humidity will be significantly lower (yay!). Humidity will increase slightly Friday night with partly cloudy skies and lows ranging from the mid-60s to near 70 degrees.
this weekend A little blurry. The southern frontal boundary begins to move northward, and the sky will be partly cloudy these two days with scattered thunderstorms, mainly in the afternoon and evening. Humidity is back to moderate levels, with humidity in the mid-80s to low 90s on Saturday and mid-90s to low 90s on Sunday. Saturday night will be partly cloudy with mainly evening showers and storms, with lows in the upper 60s to lower 70s. Reliability: Medium
