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Today: Hot and humid. Mid-90s. | Tonight: Muggy, slight chance of overnight storm. 70-77. | Tomorrow: Very hot and humid, chance of a storm. Mid-to-upper 90s. | Get Express Forecast by E-mail
The next two days present the trio of horrible h’s - haze, heat, and humidity. If we can persevere through them, we’ll be handsomely rewarded with very pleasant summer weather by Thursday. What about rain chances? Not great this week. Tuesday and Wednesday offer slight storm chances; otherwise, it’s bone dry.
Today (Monday): Lots of sun today, but, ugh, the humidity. Highs climb into the low and mid-90s, which feel closer to 100 with dewpoints around 70. Winds are light, from the southwest at 5-10 mph. Confidence: High
Tonight: The air is thick and there is little breeze. Sky conditions vary from partly to mostly cloudy, with a thunderstorm possible (20% chance) late at night. Lows are very mild from near 70 in the cooler suburbs to the mid-to-upper 70s downtown. Confidence: Medium-High
Keep reading for the forecast through the weekend...
Tomorrow (Tuesday): It’s very likely to be the hottest day of the week coupled with oppressive humidity levels. A weak boundary moving through early in the day could (20% chance) trigger an isolated storm as could (30% chance) a weak cold front as the day concludes. In between though, it’s super steamy - with highs in the mid-90s, with upper 90s if we get enough sun. Peak heat indices? 99-104. Confidence: Medium-High
Tomorrow night: Can’t rule out (20% chance) an evening thunderstorm; otherwise, it’s partly cloudy and remains mild. Lows range from the upper 60s in the cooler suburbs to mid-70s downtown. Confidence: Medium-High
Wednesday is hot, but not oppressively so. Humidity levels drop off a little, and highs climb to a more manageable 90. Late in the day, another cold front moves through, providing a 30% chance of thunderstorms. Overnight Wednesday, noticeably cooler and drier air will start trickling in. Lows will range from near 60 in the cooler suburbs to the upper 60s downtown. Confidence: Medium
Thursday and Friday both should be terrific as Canadian high pressure builds over the region. Under a mix of sun and clouds, highs both days are in the mid-to-upper 80s with relatively low humidity. Overnight lows range from the upper 50s in the coolest suburbs to the mid-to-upper 60s downtown. Confidence: Medium
Humidity makes a bit of a comeback by the weekend, but it shouldn’t compare to the levels that began the week. Highs Saturday are in the upper 80s and, by Sunday, we’ll probably back up to around 90 or even a hair above. I expect plenty of sun Saturday with a mix of clouds and sun Sunday. Overnight lows are seasonable from the mid-60s in the cooler suburbs to the low 70s downtown. Confidence: Medium