The jetstream has re-configured itself into a position that actually promotes rain across the Brazos Valley as a result of a cool front pushing across the region -- a pattern that we're not used to in early August.
Notice the big dip in the jetstream in the eastern U.S. This will bring 'not as hot' temperatures to that part of the country. What you will also notice is how the upper-level winds are moving from the northwest over the state of Texas -- what we refer to as a 'northwest flow aloft'. This is usually responsible for the cold spells that we get during the fall -- the problem is there's no cold air anywhere!
The 'August cool front' that's associated with the northwesterly winds in the upper-levels of the atmosphere is fortunately all we need to generate rain. With plenty of moisture in place, we should see some scattered rain, throughout the day, as this weak boundary works across the region Tuesday.
You'll also notice a light northerly wind Wednesday and slightly drier air, which should make for a pleasant end of the week.