D.C. area forecast: Quite comfortable this weekend before heat and humidity return

Today’s Daily Digit

A somewhat subjective rating of the day’s weather, on a scale of 1 to 10.

8
Sun, warm but not hot, and manageable humidity. Sounds good to me!

Express Forecast

Today: Mostly to partly sunny. Highs: Mid-80s.

Tonight: Partly cloudy. Lows: Mid-and-upper 60s.

Tomorrow: Partly sunny. Iso. shower or storm late? Highs: Mid-80s.

FORECAST IN DETAIL

With only six 90-degree days under our belts in D.C. this year, we’re starting to put up a bit of a deficit. We should have around 10 by the end of June and we won’t be adding to the tally this weekend. We’re pretty close to average when it comes to temperatures the next two days. As July arrives, heat will build, at least temporarily.

nice day
Today (Saturday): Today is probably borderline too warm for the Nice Day stamp, but at this point in the year a day with mostly mid-80s (82-87 area-wide) highs and tolerable humidity is pretty swell. Mostly sunny skies are the rule along with light southwest winds. Any shower or storm activity should be off to the west of the area in the mountains. Confidence: Medium-High

Tonight: Skies remain partly to mostly clear through the night, with overnight temperatures settling to near 60 in the coolest suburbs while hanging out in the mid-and-upper 60s in the urban centers. There could be a passing shower, mainly west of town. Odds are only about 10-20% though. Confidence: Medium-High

For related traffic news, check out Dr. Gridlock. Keep reading for the forecast through the weekend…

Tomorrow (Sunday): Clouds are probably more numerous than today, especially during the second half of the day. Along with that increased level of clouds, a slightly better chance of afternoon showers or storms may show itself. We’re still only talking about a 20% chance (focused west), so not a huge worry. Highs again run mainly for the mid-80s, and temps are coupled with humidity that’s considerably less than oppressive. Confidence: Medium

Tomorrow night: A risk of a passing shower or storm lingers into the evening hours, but we end up partly cloudy overall. Winds from the south continue to bring in higher humidity levels. When you mix that with some clouds over the area, we see temperatures hesitant to fall much below the mid-60s to near 70. Confidence: Medium

A LOOK AHEAD

Both heat and humidity continue their ascendance (maybe only brief?) on Monday, but remaining on the low end of what we can see with regards to both by this time of year. Under partly sunny skies, we run toward the mid-80s to around 90. By afternoon, we’re trending mostly cloudy with about a 40% chance of showers and storms. Confidence: Medium

Coming off lows in the near 70 to low 70s zone most spots, we get treated to a good old fashioned “Triple H” day of heat, haze and humidity on Tuesday. Welcome to July!! With partly cloudy skies the rule, plan on highs heading into the near 90 to mid-90s range across the area. Dew points are high as well, so it’s a sweaty one for sure. A risk of storms may present itself in the afternoon thanks to the well-primed atmosphere, though for now it looks like it’s “capped” which should try to prevent widespread development. Confidence: Medium

Ian Livingston is a forecaster/photographer and information lead for the Capital Weather Gang. By day, Ian is a defense and national security researcher at a D.C. think tank.
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Ian Livingston · June 28