 Cumulus clouds bubble up over Arlington on Saturday. (Fred Cochard) | Today's daily digit A somewhat subjective rating of the day's weather, on a scale of zero to 10. 3/10: A steamy day that ends with storms. It kind of stinks. Express forecast - Today: Partly sunny, humid. Highs: Near 90.
- Tonight: Evening storms a good bet, then partly cloudy. Lows: Near 70.
- Tomorrow: Partly to mostly sunny, hot. Highs: Low 90s
Forecast in detail Up to this point, we've avoided a heat wave this summer or three days in a row of 90-degree weather. Sadly, we won't this week. Highs most days this week touch or surpass the 90-degree mark, and it's humid, too. Storms this week are most probable late today and late Thursday. On other days, it's mainly dry but muggy enough to not rule out a random cloudburst. [Northeast enjoys blissfully mild summer as Plains and South bake] Today (Monday): It's a pretty typical mid-July day in D.C. — partly sunny, hot and humid (dew points near 70), with highs near 90. A couple of storms could pop up in the afternoon, but they probably become more numerous in the evening. Winds are from the south around 10 mph. Confidence: Medium-High  | Storm Threat Level 1 - Everyday Storm Readiness
- Chance of storms
- Isolated storms may be severe
| Tonight: Showers and storms are a good bet during the evening and a few could be severe, with damaging winds. We'll also have to monitor the flood threat — any downpours that linger could cause streams to overflow and overwhelm areas of poor drainage. The storms should tend to wane late at night when lows eventually settle near 70. Confidence: Medium-High Follow us on Facebook, Twitter and Instagram for the latest weather updates. Keep reading for the forecast through the weekend. Tomorrow (Tuesday): While humidity may be down a hair (dew points in the 60s), the sun beats down and it's a hot one. Highs are in the upper 80s to low 90s, with light winds from the west (around 5 to 10 mph). Storms chances are low. Confidence: High Tomorrow night: Mostly clear and mild. Lows range from the mid-to-upper 60s in our cooler areas to the low 70s downtown. Light winds. Confidence: High A look ahead Wednesday is mostly sunny, hot and humid, with highs in the low 90s. A muggy night follows, with lows of 70 to 75. Confidence: Medium-High Thursday may be one of the week's hottest days, with highs soaring into the mid-90s. Factoring in the humidity, it will feel close to 100 in the heat of the afternoon. Most of the day features sunshine, but an approaching cold front could set off some vigorous storms. However, it's possible they stay more to our north and east. After any evening storms, it clears out, with lows close to 70. Confidence: Medium Friday through Sunday are classic, steamy midsummer days with partly sunny skies and highs mostly in the low 90s. Some models project even higher temperatures, so this forecast may require adjustment in the coming days. Late-day storm chances are pretty low, though they edge upward by Sunday. Nighttime lows are generally near 70, except probably closer to 75 downtown. Confidence: Medium | 
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