Forecast: Heat begins its comeback
FORECAST IN DETAIL
Beginning today, we're heading for another extended period of heat, with daily highs topping 90 degrees through much of the coming week. While some rain threat enters the forecast starting Tuesday, the odds of any cooling storms are less than definitive. At this point, there's not much anyone can do about the heat, except to keep working on their backstroke.
Today (Sunday): We finish out the weekend in pretty good shape, though it's a little more summer-like. The heat is similar to yesterday, in the upper 80s to low 90s, but our dew points will run about 5-8 degrees higher, so the humidity is noticeably more sticky. Otherwise, it's a fairly nice day under partly to mostly sunny skies, though I can't rule out a storm (<20%) making its way into the western 'burbs from the mountains. Winds will be from the south at around 5 mph. Confidence: Medium-High
Tonight: The evening and overnight should be fairly tranquil under partly cloudy skies. That slight storm chance diminishes even more, and overnight lows should be fairly comfortable, right around 70. Winds remain light, blowing from the south. Confidence: Medium
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Tomorrow (Monday): Heat continues to build underneath partly sunny skies. We could see a few more clouds as a little disturbance rotates through, with the outside threat of a thundershower (<20%). Most places probably stay dry, though warm and humid with highs in the mid-90s. Winds light from the south-southwest. Confidence: Medium-High
Tomorrow Night: A bit muggier than the previous few nights as the hot air mass tightens its grip. Overnight lows stall in the 70s (suburbs) to around 80 (downtown) beneath variable cloudiness. Confidence: Medium-High
Oppressive heat and humidity are back Tuesday. Temperatures soar once again as highs reach the upper 90s. Skies begin mostly sunny but as the heat builds so will the clouds. High pressure to our south tries to suppress storms that a cold front to our north may try to ignite, but with the heat and potential instability, I'll give them a 30% chance of making it here. The overnight continues muggy as any storms wind down, with partly to mostly cloudy skies and lows in the mid-70s to around 80. Confidence: Medium
On Wednesday we'll remain under the gun for heat as temperatures head into the mid-90s. We'll have a slightly higher chance for thunderstorms (40%) as the cold front to the north stalls, but remains just to our north. Confidence: Medium
| August 8, 2010; 4:50 PM ET
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