Monday’s sunset in the District. (George Jiang via Flickr)

TODAY'S DAILY DIGIT
A somewhat subjective rating of the day's weather, on a scale of 0 to 10.

7/10: Kind of fun to hang on to summer sun, though starting to feel too hot for the calendar.

EXPRESS FORECAST

Today: Mostly sunny and warm. Highs: Mid-to-upper 80s.
Tonight: On the muggy side. Lows: Mid-60s to near 70.
Tomorrow: Partly to mostly sunny, warm. Highs: Mid-to-upper 80s.

View the current weather conditions at The Washington Post headquarters.

FORECAST IN DETAIL

Fall arrives Friday afternoon, at 4:02 p.m. to be exact. But summer weather has set up shop for the foreseeable future. Now, it's not the midsummer kind of heat and humidity. But we're plenty warm straight through the weekend, with highs well into the 80s and some mugginess to boot.

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Today (Wednesday): High pressure begins to build in, bringing mostly sunny skies and temperatures well above average, as highs head for the mid-to-upper 80s. The humidity's not super low, but perhaps a bit better than recent days, with dew points in the low-to-mid-60s. Winds are light from the northwest around 5 to 10 mph. Confidence: High

Tonight: Muggier than we'd like at this point in September, but otherwise pleasant. Lows settle in the mid-60s to near 70 under mostly clear skies, with light winds still from the northwest. Confidence: High

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Tomorrow (Thursday): Hard to see any difference at all between tomorrow's weather pattern and today's. So we'll call for almost the exact same, with partly to mostly sunny skies, highs in the mid-to-upper 80s, and humidity still in that moderate range. Winds stay light from the north around 5 to 10 mph. Confidence: High

Tomorrow night: Mild and muggy again, with mostly clear skies. The warm readings remain, with lows only down to the mid-60s to near 70. Confidence: High

A LOOK AHEAD

We find ourselves in an atmospheric holding pattern for Friday through the weekend. That means more partly-to-mostly-sunny skies and mid-to-upper 80s for highs. The humidity may come down just a bit Saturday and Sunday. Nighttime lows range through the 60s to near 70. Confidence: Medium