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Today: Mostly to partly sunny. Late afternoon shower/storm? Upper 80s to near 90. | Tonight: 30% chance of showers/storms. Mid-60s to near 70. | Tomorrow: Mostly cloudy. 50-60% chance of showers/storms. Mid-70s to near 80. | A Look Ahead | Get Express Forecast by E-mail
As meteorologists, we tend to use the term cold front liberally, like earlier this summer when a “cold” front dropped highs from the 100s one day to the still excessively hot upper 90s the next. Our next cold front, however, is the real deal. It’s set to come rolling through tomorrow and knock highs down to the 60s by Friday, with the cool conditions sticking around through the weekend. Before then, we have a warm day today followed by a cooler and potentially showery and/or stormy day tomorrow.
Today (Wednesday): We should be mostly sunny through much of the day as highs make the upper 80s to near 90 with a touch of humidity, before skies turn partly cloudy later in the afternoon or toward evening. A few showers or storms may try to form during the late afternoon out ahead of a cold front slowly approaching from the west. Western suburbs would have the best chance (around 20-30%) of seeing anything. Confidence: Medium-High
Tonight: Shower/storm chances creep up a bit for the evening and overnight - to around 30% area-wide. Under partly to mostly cloudy skies, lows are in the mid-60s to near 70. Confidence: Medium
Keep reading for the forecast through the weekend...
Tomorrow (Thursday): A cold front moving through means mostly cloudy skies and a 50-60% chance of daytime showers and thunderstorms. By late morning or afternoon, winds turn breezy from the northwest and begin to blow cooler air into the area. Highs should get to the mid-70s and maybe even near 80 early in the afternoon before temps start to fall. Confidence: Medium
Tomorrow night: Any remaining showers should be on their way out by or during the evening, replaced by increasingly cooler air as winds continue to breeze at a good clip from the northwest. Just how cool? Well, evening readings descend through the 60s before diving to overnight lows in the low 50s downtown and upper 40s in the burbs. Too cool too soon? Or just what we need after our second hottest summer on record? Confidence: Medium
It’s been a long time since we’ve seen a stretch like this: Fall is in full effect Friday through Sunday with partly to mostly sunny skies; daytime highs only in the upper 60s to low 70s Friday and Saturday, and low-to-mid 70s Sunday; and nighttime lows mainly in the upper 40s to mid-50s. High pressure should be strong enough to keep shower chances below 20% each day. Confidence: Medium