A cold front the morning of January 15th brought a return of sub-freezing temperatures to the Rio Grande Valley and Deep South Texas. While this surge of cold weather wasn't as cold as the freeze earlier in the month, it did lead to two mornings with widespread freezing conditions across the region. Gusty north to northwest winds rushed in behind the front as a 1026 millibar high settled across northern Texas. The wind relaxed just enough to allow temperatures to drop into the upper 20s to lower 30s across much of the region on the morning of January 16th. The high remained close enough on the morning of January 17th to allow for ideal radiational cooling conditions with light winds and clear skies. This led to a longer duration of the sub-freezing temperatures on the morning of January 17th.

Frost/Freeze in BROOKS, TEXAS
From 16-JAN-22 05:35:00 to 16-JAN-22 08:15:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Temperatures fell below freezing around 5:35AM CST on January 16th and remained below freezing until 8:15AM CST. Low temperatures fell into the upper 20s across the area. A minimum temperature of 28 degrees was observed at the Brooks County Airport (KBKS).

Frost/Freeze in WILLACY, TEXAS
From 16-JAN-22 06:26:00 to 16-JAN-22 08:26:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures fell below freezing around 6:26AM CST on January 16th and remained below freezing until 8:26AM CST. Low temperatures fell into the upper 20s across the area. A minimum temperature of 29 degrees was observed at the Union Pacific Railroad site 7 miles north of Raymondville at 7:26AM CST.

Frost/Freeze in JIM HOGG, TEXAS
From 17-JAN-22 03:35:00 to 17-JAN-22 08:10:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Several stations near Hebbronville, in the very northern part of the county, reported minimum temperatures between 37 and 40 degrees. However, several surrounding sites in surrounding counties to the west, east, and south recorded sub-freezing temperatures on the morning of January 17th. Therefore, it is reasonable to assume temperatures were sub-freezing for a majority of Jim Hogg county. The mesonet site northwest of La Gloria (TBW26), a few miles south of the Jim Hogg/Starr County border recorded a minimum temperature of 26 and AWOS site in Zapata recorded a low of 27 degrees. Times are estimated.

Frost/Freeze in BROOKS, TEXAS
From 17-JAN-22 03:15:00 to 17-JAN-22 08:35:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Temperatures fell below freezing around 3:15AM CST on January 17th and remained below freezing until 8:35AM CST. Low temperatures fell into the middle 20s across the area. A minimum temperature of 25 degrees was observed at the Brooks County Airport (KBKS).

Frost/Freeze in INLAND KENEDY COUNTY, TEXAS
From 17-JAN-22 05:52:00 to 17-JAN-22 08:12:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures fell below freezing around 5:52AM CST on January 17th and remained below freezing until 8:12AM CST. Low temperatures fell into the lower to middle 20s across the area. A minimum temperature of 22 degrees was observed at the Union Pacific Railroad site near Sarita at 7:32AM CST. Another Union Pacific Railroad mesowest 8 miles south Armstrong (UR072) recorded a low of 30 degrees at 6:27AM CST.

Frost/Freeze in WILLACY, TEXAS
From 17-JAN-22 05:24:00 to 17-JAN-22 07:24:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures fell below freezing around 5:24AM CST on January 17th and remained below freezing until 7:24AM CST. Low temperatures fell into the lower 30s across the area. A minimum temperature of 31 degrees was observed at the Union Pacific Railroad site 7 miles north of Raymondville at 5:54AM CST.

Frost/Freeze in ZAPATA, TEXAS
From 17-JAN-22 03:35:00 to 17-JAN-22 08:15:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Temperatures fell below freezing around 3:35AM and remained below freezing until 8:15AM. Low temperatures fell into the middle to upper 20s across the region. A minimum temperature of 27 was observed at the Zapata airport (KAPY).

Frost/Freeze in STARR, TEXAS
From 16-JAN-22 04:11:00 to 16-JAN-22 08:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Temperatures fell below freezing around 4:11AM CST on January 16th and remained below freezing until 8:30AM CST. Low temperatures fell into the upper 20s to near 30 degrees across the area. A minimum temperature of 28 degrees was observed at the Remote Automated Weather Station site at Falcon Lake (FART2). Additionally, a Mesowest site northwest of La Gloria (TWB26) reported at low of 30 degrees at 7:30AM CST.

Frost/Freeze in NORTHERN HIDALGO COUNTY, TEXAS
From 16-JAN-22 05:46:00 to 16-JAN-22 08:26:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Temperatures fell below freezing around 6:26AM CST on January 16th and remained below freezing until 8:26AM CST. Low temperatures fell into the upper 20s across the area. A minimum temperature of 29 degrees was observed at the Remote Automated Weather Station in Linn-San Manuel at 7:46AM CST.

Frost/Freeze in INLAND KENEDY COUNTY, TEXAS
From 16-JAN-22 06:08:00 to 16-JAN-22 08:20:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures fell below freezing around 6:08AM CST on January 16th and remained below freezing until 8:32AM CST. Low temperatures fell into the upper 20s across the area. A minimum temperature of 28 degrees was observed at the Union Pacific Railroad site near Sarita at 7:32AM CST. An NWS cooperative observer reported a minimum temperature of 30 degrees near Armstrong.

Frost/Freeze in NORTHERN HIDALGO COUNTY, TEXAS
From 16-JAN-22 22:46:00 to 17-JAN-22 08:20:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Temperatures fell below freezing around 10:26PM CST on January 16th and remained below freezing until 8:20AM CST on January 17th. Low temperatures fell into the upper 20s across the area. A minimum temperature of 27 degrees was observed at the Remote Automated Weather Station in Linn-San Manuel (LSRT2) at 5:46AM CST. Additionally, freezing temperatures were observed at South Texas International Airport (KEBG), 11 miles north-northeast of Edinburg, with a low of 32 at 7:55AM CST.

Frost/Freeze in STARR, TEXAS
From 17-JAN-22 02:20:00 to 17-JAN-22 08:10:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures fell below freezing around 2:20AM CST on January 17th and remained below freezing until 8:10AM CST. Low temperatures fell into the upper 20s across the area. A minimum temperature of 27 degrees was observed at the Mesowest site northwest of La Gloria (TWB26). Additionally, the Remote Automated Weather Station at Falcon Lake (FART2) recorded a minimum temperature of 29.