The passage of several cold fronts during the latter half of November dropped some beneficial rain across portions of the Rio Grande Valley and Deep South Texas. One front, a slow mover on Thanksgiving Weekend (Saturday evening), dropped between an inch and two inches of rain during this period in much of Starr County. To the north of Starr County, Jim Hogg County also saw beneficial rainfall in the amount of three quarters of an inch to an inch of rainfall with pockets up to 1 1/2 inches. These two counties would be the only ones in the Rio Grande Valley and Deep South Texas to see any improvement in drought conditions for the month of November.
The rains that improved soil moisture content across portions of the Upper Valley/Brush Country faded to little more than sprinkles in the Lower Valley. Portions of Cameron County failed to reach one quarter inch for the month and fell 1 to 2 inches below an already dry monthly average.  Drought levels returned to Extreme (D3) for the entire county to close the month.

Drought in STARR, TEXAS
From 27-NOV-12 00:00:00 to 30-NOV-12 23:59:00 (CST-6)
Property damage: 0.00K
Reported by: Drought Monitor

The passage of a slow moving cold front on November 23rd produced beneficial rainfall across Starr County.  The Falcon Dam region received around an inch and a half of rainfall, while Rio Grande City received a little over an inch. Rainfall estimates were between 1.5 and 2 inches across the ranchlands of central and northeast Starr County, allowing drought conditions to improve across Starr County, with much of the county improving from Extreme (D3) drought conditions to Severe (D2) drought conditions, except for a tiny sliver along the eastern county border that continued to stubbornly cling onto Extreme (D3) drought conditions due to a local rainfall minimum.

Drought in JIM HOGG, TEXAS
From 27-NOV-12 00:00:00 to 30-NOV-12 23:59:00 (CST-6)
Property damage: 0.00K
Reported by: Drought Monitor

Rainfall was spotty during the latter half of November across Jim Hogg County, but showers and thunderstorms associated with a cold front that moved across the county on the 23rd, dropped  0.75 inches of rain at the Jim Hogg County Airport. This rainfall was beneficial and allowed for drought conditions to improve across much of Jim Hogg County, with the western two thirds of the county improving to Severe (D2) drought conditions.  Extreme (D3) drought conditions remained confined to only the eastern third of the county.

Drought in CAMERON, TEXAS
From 27-NOV-12 00:00:00 to 30-NOV-12 23:59:00 (CST-6)
Property damage: 0.00K
Reported by: Drought Monitor

Dissipating rainfall from a slow moving cold front on November 23rd dashed hopes for any drought improvement across Cameron and Willacy Counties.  Less than one tenth of an inch fell, and no additional rain fell through month's end.  This left county rainfall totals as low as 0.16 inch at Brownsville/South Padre Island International Airport, and 0.35 inches at Harlingen/Valley International Airport, and 0.52 at Harlingen/Cooperative. The low rainfall resulted in deteriorating drought conditions for inland Cameron County, dipping back to D3 (Extreme) to close out November.