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D.C. area forecast: Two splendid days with low humidity, then mugginess returns

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

10/10: A mild, dry day deserving of a ten. Can I get an amen? After that who knows when, shall we see such fine weather again…


Today: Mostly sunny, low humidity. Highs: 81-85
Tonight: Mainly clear and calm. Lows: 62-68
Tomorrow: Scattered clouds, humidity still moderate. Highs: 84-88


If only we could bottle today – which is near perfect. Unfortunately, the heat, humidity and thunderstorms come racing back for the weekend and beyond. With all the rain, lawn mowing is getting to be a real race this season though the gardens have never looked better.

While hotter weather is just around the corner, I am pleased to say we have passed the hottest time of the year on average – centered on July 15 – and are now on the downhill side of temperatures for the season. While not even a degree drop in the normal until next week, it is a mental milestone.

Today (Thursday): Some morning clouds quickly evaporate into a mostly cloudless day. What should come as a welcome jolt is the substantial drop in humidity. Add in just light breezes and you have a day that begs the question, why are you inside working? Highs stall out in the low-to-mid 80s. Confidence: High

Tonight: The evening is as good as it gets with readings in the 70s and calm winds under starry skies. My puppy gets extra walk time for sure. Lows range through the 60s. Confidence: High

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

Tomorrow (Friday): The problem with this day is that it has to follow Thursday’s perfect weather. Slightly higher humidity and temperatures are still within the seasonable range and outdoor errands should not be painful. Clouds pop up as the day progresses but any thunderstorms should pass far to the north of the metro region giving the area one more day to dry before daily shower chances return for the weekend. Highs top out in the mid-to-upper 80s. Confidence: Medium-High

Tomorrow night: The clouds should disperse later in the evening but humidity is pushing back in noticeably on light south winds. The result is most areas hold in the low-to-mid 70s for lows. Confidence: Medium-High


Saturday could see a few showers at any time but expect a good deal of sun during the middle of the day. A hotter and more humid regime should lead to an unsettled afternoon/evening with scattered thunderstorms possible across the region (60% chance). Highs are back in the 90s, albeit low 90s for most. Hopefully there will be enough breaks in the clouds in the evening to see the crescent moon return to the evening western sky escorted by Venus and Jupiter in the twilight. Lows fail to fall lower than the mid-to-upper 70s. Confidence: Medium

Sunday sees more heat and continued high humidity but most thunderstorms should hold off until later in the day and are likely to be a little more limited in coverage (about 40% of the area). That is little comfort if you are caught in one of the showers, so keep the umbrella handy. Highs are back to painful levels; low-to-mid 90s. Overnight should be quieter on the shower front. Lows are again stuck in the mid-to-upper 70s for most. Confidence: Medium

A cold front is struggling to make it to the area on Monday but if it is fast enough it could hold our highs in the lower 90s but if it falters mid-90s dominate with even a few upper 90s possible. Thunderstorms are more likely (60% chance) with the front but cooling abilities in the ongoing humid environment are poor. Everyone find a cool spot to rest and hydrate. Confidence: Low-Medium