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D.C.-area forecast: Temperatures approach 100 today, feeling like 105 to 110


* Heat advisory from 11 a.m. through 8 p.m. today *

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

1/10: I mean … it could be a little worse. Hydrate and hide from the heat where possible.

  • Today: Mostly sunny. Isolated late-day storm? Highs: 97-101.
  • Tonight: Partly cloudy. Lows: Mid-70s to low 80s.
  • Tomorrow: Partly cloudy. Scattered late-day storms? Highs: Mid-90s to near 100.

The weekend crest of our ongoing heat wave should send many spots to around 100 at least once and maybe twice. When considering moisture in the air, it turns legitimately dangerous as prolonged heat indexes — a measure of heat and humidity — at or above 105 are likely on both days. A cold front arriving Sunday night won’t exactly deliver colder air, but it won’t be quite as hot behind it.

Today (Saturday): Today’s at least a coin flip chance of making it to 100. If it happens, it’s the first time since 2016 for the city. As you might expect given that news, sunshine is plentiful. Feels like temperatures are passing 100 by lunchtime most locations, headed to maximums of 105 to 110 in the afternoon.

Highs across the region should range from about 96 to 101, which may threaten some records, particularly for Baltimore (100 in 1988) and Dulles (99 in 1988). D.C.’s record of 101 in the same year is not completely out of reach, but a bit of a stretch. Confidence: Medium-High

Tonight: Any isolated storm quickly dies off with sunset leaving us partly cloudy and soupy. It’s an uncomfortable evening as heat indexes remain near 100 until dark and stay in the 90s much of the night. Mid-70s to low 80s should do it for lows, which will set some more records for warm minimums. Confidence: Medium-High

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Tomorrow (Sunday): It’s a lot like today, and with perhaps a higher starting point. The main question is how cloudy it gets during the afternoon. To hit super high temperatures, we usually need to see near-full sunshine. Either way, it’s going to be gross, with highs ranging from the mid-90s to around 100. It’ll feel more like 105 or so when humidity is factored in. Scattered showers and storms may move in late day. Confidence: Medium-High

Tomorrow night: Any scattered showers and storms could persist into the night. A cold front won’t pass until the pre-dawn or near sunrise, which means humidity reigns and lows are in the 70s. Confidence: Medium-High

It’s hard to call more near-90 weather Monday a “break” in the heat, but after this weekend, it might feel that way. Sunshine rules while humidity is down to moderate levels, helping it feel much better than it will today and tomorrow. Highs range from about 89 to 93. Confidence: Medium

Tuesday’s temperatures are probably similar to what we get on Monday — perhaps a degree hotter but mainly low 90s. There’s also still tons of sun and relatively modest but slowly increasing humidity levels. Confidence: Medium





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