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DC-area forecast: Humidity drops off tonight. Nicer tomorrow into the weekend.

Widow skimmer dragonfly with its wings outstretched on a reed in the sun.
Widow skimmer dragonfly at Kenilworth Park and Aquatic Gardens on a sunny day. (Brian Paeth/Flickr)
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Always a human at the helm: Updated around-the-clock by Capital Weather meteorologists.

Happening now: A shower or storm possible, especially in Southern Maryland through evening. Partly cloudy elsewhere with temperatures slowly falling through the 80s most spots.

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What’s next? Partly to mostly sunny and pleasant Thursday through Saturday, with lower humidity and highs in the upper 70s to mid-80s.

Forecast in detail

Tonight: Still a shower or storm possible into the early evening south and east of the Beltway, and particularly over Southern Maryland. Humidity may start to come down a bit during the evening. Light winds from the north should drop humidity more significantly overnight. Lows settle in the low to mid-60s under partly to mostly clear skies. Confidence: High

Hourly Forecast | Pollen, Air & UV

Tomorrow (Thursday): About as nice as can be for the latter part of July. Mostly sunny with highs mainly in the upper 70s to low 80s and low humidity (dew points in the 50s). Confidence: High 😎 Nice Day!

Tomorrow night: Mostly clear and comfortable – not a word you hear often in July! Lows range from the upper 50s to low 60s. Confidence: High

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A look ahead

Friday and Saturday look like a pair of nice days. Both should be partly to mostly sunny with highs in the upper 70s to mid-80s and not too humid (dew points in the mid-50s to low 60s). Friday and Saturday night lows fall back to near 60 to the mid-60s. Confidence: Medium-High

Sunday looks like a decent day, too, with highs in the 80s. But perhaps with rising humidity and the chance of an isolated late-day shower or storm. Confidence: Low-Medium

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Lush vegetation and a squirrel are seen at the United States Botanic Garden.
The scene on Saturday at the United States Botanic Garden in Southwest DC. (Brian Paeth/Flickr).

On this day

DC weather history for July 22

A day of extremes, from deadly record heat in 1926 to major flooding rains in 1969 and even a tornado damaging aircraft in 1987.

Sunrise6:01 a.m.Sunset8:29 p.m.
Avg High90°Avg Low73°
Rec High103° 1926Rec Low53° 1890Rec Rain4.35" 1969
Read full July 22 weather history →

Today’s daily digit — 6/10: Some periods of sun send the digit higher, even with stubborn humidity and a lingering shower chance. | 🤚 Your call?
The digit is a somewhat subjective rating of the day’s weather, on a 0-to-10 scale.

Dan Stillman

Dan Stillman

Lead meteorologist and Capital Weather cofounder. Leader in marketing, communications and engagement.

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