D.C. area forecast: More rain chances today, but slowly warmer and drier as week progresses

* Flash flood watch through this evening (except Loudoun, Frederick co) *

Today’s Daily Digit

A somewhat subjective rating of the days weather, on a scale of 1 to 10.

3
More yucky muck with showers and humidity.

Express Forecast

Today: Mostly cloudy. Showers and storms likely.  Highs: 80-84

Tonight: Mostly cloudy with a few showers.  Lows: 70-74.

Tomorrow: Mostly cloudy, showers and storms likely. Highs: 83-87.

FORECAST IN DETAIL


Radar & lightning:Latest D.C. area radar shows movement of precipitation and lightning strikes over past two hours. Refresh page to update. Click here or on image to enlarge. Or see radar bigger on our Weather Wall.

Our current humid, showery pattern continues to grind in place as the area is essentially trapped between high pressure to the east and a low pressure trough to our west. The high pressure starts to slowly win out over the next few days, offering some gradually drier and hotter weather for the upcoming holiday weekend.  I can’t guarantee a dry fireworks show Thursday evening, but the odds for dry are much better than today and tomorrow at least.

Today (Tuesday): A super-saturated southerly flow continues to feed lots of moisture our way today, offering lots more clouds, showers/storm opportunities (70 percent chance), moderate to high humidity, and high temperatures in the low to maybe middle 80s (depending on timing of sun breaks). Most areas could pick up from a .25″ to .5″, but locally could be higher with downpours. Timing the showers and storms continues to be tricky, and as we saw yesterday, we could see extended periods of dryness.  Breezes are from the moist south at 10-15 mph. Confidence: Medium

Tonight: Partly to mostly cloudy, scattered showers or storms (40 percent risk) especially in the evening with low temperatures in the muggy low-to-middle 70s again.  Additional rain amounts would range from zero/trace to a quarter inch with locally higher totals possible due to downpours.  Light winds from the south at 5-10 mph. Confidence: Medium

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

Tomorrow (Wednesday): Partly to mostly cloudy with a 60 percent chance of more showers and storms.  The coverage and intensity should be less than the prior two days, so we’ll get more chances at cloud breaks and warmer temperatures up into the middle or maybe even upper 80s depending on afternoon conditions.  Light breezes at 5-10 mph still come from the south, keeping our humidity moderate to high.  Confidence: Medium

Tomorrow night: Partly cloudy and still humid with a 30 percent chance of showers or storms, especially in the evening.  Confidence: Medium

A LOOK AHEAD

Independence Day (Thursday) shouldn’t be quite as wet overall, but we still run about a 40 percent risk of showers and storms.  We’ll aim for a “partly sunny” sky situation, however “variable clouds” may also qualify yet again as highs climb a little bit more to the upper 80s.  Humidity is still up there too. Thursday night sees partly to mostly cloudy skies with a 30 percent risk of showers/storms as lows again settle to around 70 in the outer suburbs to the low-to-mid 70s in the city.  Most areas should be able to get their fireworks going with the widely scattered rain risks.  Confidence: Medium

Friday features partly sunny skies, moderate humidity, highs in the upper 80s to around 90, and- you guessed it- another chance of mainly afternoon to evening showers and storms (30 percent chance). Friday night should see partly sunny skies with lows ranging from near 70 to the middle 70s. Confidence: Medium

Bermuda high pressure makes a stronger appearance this weekend with partly to maybe sometimes mostly sunny skies, highs in the hotter low-to-middle 90s, and a continuing 30 percent risk of mainly afternoon to early evening showers and storms.  Humidity should stay in the moderate range, so the first weekend of July will feel very much like our hottest month of the year typically in DC. Confidence: Medium

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Heat Tracker

45
90-degree days year-to-date
Yearly Average
36
Record Most
67 (1980,2010)
Record Fewest
7 (1886,1905)
Last Year
24

At a Glance

Sun.

partlycloudyday
71° /91°

Mon.

partlycloudyday
74° /89°

Tue.

partlycloudyday
74° /94°

Wed.

thunderstorms
75° /93°
Drop 20%

Thu.

thunderstorms
75° /93°
Drop 30%

Fri.

thunderstorms
74° /91°
Drop 30%
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Matt Rogers · July 2, 2013

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