It's a somewhat subjective rating of the weather for that day on a scale of 0 to 10.
6/10: Humidity is thankfully low for the second day in a row, but it's shaping up to be hotter than it was on Monday before Wednesday's heatwave.
Today: Sunny, not too humid. High: 89-95. Tonight: Partly cloudy with humidity returning. Low: 72-78. Tomorrow: Very hot with a chance of an afternoon storm. High: 95-100.
Tomorrow's surge in heat and humidity is likely to be as extreme as last weekend's, but thunderstorms could develop by late afternoon or evening, bringing some much-needed rain. The last time Washington, DC, saw less than an inch of rainfall in June was the hot, dry summer of 1988. Only 0.48 inches of rain has fallen so far in June. Temperatures will return to the 80s on Thursday and Friday, rising into the 90s this weekend with a risk of storms.
TODAY (Tuesday): Mostly sunny with temperatures in the 90s to mid 90s and a bit warmer, but humidity will be tolerable and dew points will stay in the 50s. Winds will decrease on Monday, becoming light, mainly out of the northwest around 5 to 10 mph, becoming more southwesterly as the day progresses. Confidence: High
Tonight: Humidity returns, with a few clouds and lows only dropping into the 70s F. Light winds from the south 5 to 10 mph. Reliability: High
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Tomorrow (Wednesday): There is no official “average day” that equates to a “good day,” but this day easily meets that criteria. Mostly sunny and sunny conditions will prevail from mid-morning through mid-day, with temperatures rising to the mid- to near-100°F. Humidity will be moderate to high (dew points in the mid- to upper-60s F), and the heat index will reach 100 to 105. If you must be outdoors, use caution and hydrate. The highest temperature on the calendar in Washington, DC, was 101° in 1952.
Showers and thunderstorms possible by late afternoon or evening. Some storms may be severe with strong winds and large hail. Many locations will get at least 1/4 to 1/2 inch of rain, with locally heavier amounts possible in some locations. Winds will be from the southwest at 10 to 15 mph, with higher gusts near the storm's edge. Reliability: Medium
Tomorrow Night: Partly to mostly cloudy skies as scattered rain and thunderstorms are expected overnight and into the night, with lows dropping into the mid to low 60s F. Confidence: Medium
Thursday and Friday will be mostly sunny (with a chance of clouds early Thursday) with seasonably high highs in the upper 80s and low to moderate humidity. There will be a slight chance of showers or thunderstorms each day in the late afternoon or evening. Thursday and Friday night will be partly cloudy with lows in the 60s to 70s Thursday night and into the 70s with increasing humidity Friday night. Confidence: Moderate
Moderate to high humidity will return for the weekend with highs in the low 90s on Saturday and mid 90s on Sunday with some sunshine. Showers and storms will be more likely again, especially on Sunday given the current conditions. Saturday night will be partly to mostly cloudy and muggy with lows in the mid to upper 70s with a chance of showers and storms. Confidence: Moderate
