Shower and thunderstorm activity will persist again across the Southwest and Intermountain West on Thursday.
A setup that is funneling moisture into the desert Southwest, Great Basin and Rockies is to blame, and will elevate the risk for flooding.
Flood advisories have been issued across the region as the already-saturated ground could quickly be overwhelmed by additional rain.
The Intermountain West to the Plains states will also be dealing with above-average temperatures.
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Daytime highs will largely be in the 90s, with some areas getting into the low 100s.
This extreme heat will last at least through Friday.
Meanwhile, on the coasts, a break from sweltering temperatures is forecast.
Highs across New England will again be above average on Thursday before dipping on Friday and through the weekend.
Highs from Friday through Sunday will be in the upper 70s to low 80s.
Finally, dry air continues to bring an elevated wildfire risk to parts of the Pacific Northwest.
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Advisories have been issued in northern California, Oregon and Washington.