21.   After several record high temperatures were set in Texas on Wednesday, cooler air will arrive Thursday, though it will still be rather warm.

22.   After several days of unrelenting rain across the Pacific Northwest, drier air will finally arrive as high pressure builds onshore.

23.   But as colder air arrives aloft, a few thunderstorms will form in the afternoon.

24.   But parts of the northern Lakes will receive a thundershower as warmer air arrives.

25.   But, as cold air arrives aloft later Tuesday, snow will steadily reach down to lower elevations.

26.   Chilly air will arrive across the interior Northeast on Monday.

27.   Clouds will break in the lower Ohio Valley as drier air arrives.

28.   Clouds will yield to some sun as drier air arrives from the eastern Ohio Valley to the interior Middle Atlantic States.

29.   Clouds will cover much of the eastern Great Lakes as the chillier air arrives.

30.   Clouds and areas of drizzle will yield to a steadier rain Sunday afternoon from Pennsylvania to North Carolina as moist air arrives from the west.