After a few days of colder weather, we've returned to above-average temperatures in the middle of what will likely wind up being the hottest December on record for most, if not all, of the area.
With just a few cirrus clouds flowing above, mainly to the west, bright skies, and a mild southerly breeze, temperatures are expected to rise into the 70s area. In the western Hill Country and southern Edwards Plateau, a dryline has advanced eastward over Val Verde and Edwards Counties.
It seems to have gone as far as Kerr County, permitting a change in the wind direction westerly, a fall in humidity, and increased temperatures. Wind speeds have been low enough to minimize worries about fire weather to a very bare minimum.
Today's increasing low-level moisture, mainly south and east of the Escarpment, has resulted in dew points in the low to mid-50s. The low stratus and fog will develop in the morning as the temperature drops overnight, and the winds become light and variable before becoming relatively quiet.
However, the areas northwest of Del Rio, Rocksprings, and Llano will likely stay generally clear.
On Thursday morning, dense fog is expected to affect the morning commute mainly along and east of I-35. Cloud cover will be sluggish to clear for portions of the region, so despite southerlies rising to 15-20 mph across eastern and northern areas by the afternoon, peak temperatures may end up being a few degrees colder than today in some places despite the increased southerlies.
Still, with unusual upper ridging anticipated throughout northern Mexico, temperatures will continue to be above average, with projected highs in the 69-80 degree range for the remainder of the week.
Dew points will continue to rise over the next few days, and they will reach or surpass 60 degrees across the Coastal Plains by tomorrow night. Even the western part of the area will have dew points over 50 degrees. Consequently, another morning of low cloud and fog formation is anticipated early Friday morning.
At the same time, models predict the highest possibilities for thick fog along and west of US-281 in the coming hours.