A strong cold front swept through Deep South Texas the morning of February 3rd and caused temperatures to drop 20 to 25 degrees immediately following it as a strong arctic high pushed south into Texas. The Arctic High ushered in cold air and led to well below normal temperatures and a couple of sub-freezing nights. The coldest period was between the night of February 4th through the morning of February 5th when clouds cleared out and temperatures dropped into the lower to middle 20s across portions of Deep South Texas, with the coldest readings in rural inland locations away from the populated Rio Grande Valley. Much of the region away from the populated Rio Grande Valley experienced another light freeze the morning of February 6th. Wind chills dipped into the middle teens to middle 20s the morning of February 4th.

Frost/Freeze in BROOKS, TEXAS
From 03-FEB-22 22:35:00 to 04-FEB-22 11:55:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Temperatures fell below freezing around 10:35PM CST on February 3rd, and did not rise above freezing until around 11:55AM CST on February 4th. A low of 28 degrees was observed at the Brooks County Airport (KBKS).

Frost/Freeze in COASTAL KENEDY COUNTY, TEXAS
From 04-FEB-22 03:36:00 to 04-FEB-22 11:24:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Temperatures fell below freezing around 3:36AM CST on February 4th, and did not rise above freezing until around 11:24AM CST. A low of 31 degrees was observed at the Texas Coastal Ocean Observing Network (TCOON) site at Rincon del San Jose (RSJT2).

Frost/Freeze in COASTAL WILLACY, TEXAS
From 04-FEB-22 04:00:00 to 04-FEB-22 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Temperatures fell below freezing around 4:00AM CST on February 4th, and did not rise above freezing until around 11:00AM CST; these times are off estimations based on observations in Inland Willacy and Coastal Kenedy Counties. A COOP observer reported a  low of 32 degrees was observed at Port Mansfield.

Frost/Freeze in INLAND KENEDY COUNTY, TEXAS
From 04-FEB-22 00:40:00 to 04-FEB-22 12:08:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures fell below freezing around 12:40AM CST on February 4th, and did not rise above freezing until around 12:08PM CST. The Union Pacific Railroad site 8.4 miles south of Border Patrol (UR074) recorded a low of 29 degrees. Another Union Pacific Railroad site 1.3 miles north of Sarita observed a low of 27 degrees.

Frost/Freeze in JIM HOGG, TEXAS
From 04-FEB-22 00:55:00 to 04-FEB-22 10:35:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Temperatures fell below freezing around 12:55AM CST on February 4th, and did not rise above freezing until around 10:35AM CST. The Jim Hogg Airport (KHBV) observed a low of 31 degrees along with the mesonet site at South Fork Estates (TWB75).

Frost/Freeze in BROOKS, TEXAS
From 05-FEB-22 01:15:00 to 05-FEB-22 08:55:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Temperatures fell below freezing around 1:15AM CST on February 5th, and did not rise above freezing until 8:55AM CST. The Brooks County Airport (KBKS) observed a low of 25 degrees.

Frost/Freeze in CAMERON, TEXAS
From 05-FEB-22 04:10:00 to 05-FEB-22 07:45:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Temperatures fell below freezing around 4:10AM CST on February 5th, and did not rise above freezing until 7:45AM CST. The Rio Grande Valley International Airport (KHRL) reported a low of 30 degrees. Also, the Union Pacific Railroad station near Sebastian (UR105) in northwest Cameron County observed a low of 29 degrees.

Frost/Freeze in INLAND KENEDY COUNTY, TEXAS
From 05-FEB-22 00:00:00 to 05-FEB-22 08:51:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures fell below freezing around 12:00AM CST on February 5th, and did not rise above freezing until 8:51AM CST. The Union Pacific Railroad site 8.4 miles south of Border Patrol (UR074) recorded a low of 26 degrees. Another Union Pacific Railroad site 1.3 miles north of Sarita observed a low of 24 degrees.

Frost/Freeze in JIM HOGG, TEXAS
From 04-FEB-22 23:55:00 to 05-FEB-22 08:35:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Temperatures fell below freezing around 11:55PM CST on February 4th and did not rise above freezing again until 8:35AM CST on February 5th. The Jim Hogg County Airport (KHBV) recorded a low of 25 degrees. Additionally, the Texas Mesonet site at Hellen Station observed a low of 25 degrees.

Frost/Freeze in STARR, TEXAS
From 05-FEB-22 01:45:00 to 05-FEB-22 08:20:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures fell below freezing around 1:45AM CST on February 5th and did not rise above freezing again until 8:20AM CST. The Texas Mesonet site at Rancho Los Comitas (TWB26) recorded a low of 25 degrees. A COOP observer recorded a low of 26 degrees in Rio Grande City in southern Starr County.

Frost/Freeze in ZAPATA, TEXAS
From 05-FEB-22 02:30:00 to 05-FEB-22 08:05:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Temperatures fell below freezing around 2:30AM CST on February 5th and did not rise above freezing again until 8:05AM CST. The Zapata County Airport (KAPY) recorded a low of 28 degrees.

Frost/Freeze in JIM HOGG, TEXAS
From 06-FEB-22 02:15:00 to 06-FEB-22 08:15:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Temperatures fell below freezing around 2:15AM CST on February 6th and did not rise above freezing again until 8:15AM CST. The Jim Hogg County Airport (KHBV) recorded a low of 29 degrees. Additionally, the Texas Mesonet site at Hellen Station also observed a low of 29 degrees.

Frost/Freeze in NORTHERN HIDALGO COUNTY, TEXAS
From 05-FEB-22 23:45:00 to 06-FEB-22 07:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Temperatures fell below freezing around 11:45PM CST on February 5th and did not rise above freezing again until 7:30AM CST on February 6th. The RAWS site at Linn-San Manuel recorded a low of 30 degrees.

Frost/Freeze in NORTHERN HIDALGO COUNTY, TEXAS
From 04-FEB-22 01:00:00 to 04-FEB-22 11:10:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Temperatures fell to near freezing around 1:00AM CST on February 4th, and did not rise above freezing until around 11:10AM CST. The COOP observer at San Manuel recorded a low of 32 degrees. Times are based off estimations from observations in Brooks and Inland Willacy Counties.

Frost/Freeze in WILLACY, TEXAS
From 04-FEB-22 02:39:00 to 04-FEB-22 11:07:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures fell to near freezing around 2:39AM CST on February 4th, and did not rise above freezing until around 11:07AM CST. The YTURIA Union Pacific Railroad site (UR295) recorded a low of 30 degrees.

Frost/Freeze in COASTAL KENEDY COUNTY, TEXAS
From 05-FEB-22 00:00:00 to 05-FEB-22 08:51:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Based on observations from Inland Kenedy, temperatures fell below freezing across portions of Coastal Kenedy County around 12:00AM CST on February 5th and did not rise above freezing through 8:51AM CST. The nearby SARITA and ARMSTR Union Pacific Mesonet sites both recorded a low of 24 degrees and 26 degrees respectively, while the Texas Ocean Observation Coastal Network (TCOON site at Rincon del San Jose observed a low of 33 over the water.

Frost/Freeze in COASTAL WILLACY, TEXAS
From 05-FEB-22 01:30:00 to 05-FEB-22 08:40:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Despite sparse coverage, it is estimated that temperatures fell below freezing across portions of Coastal Willacy County around 1:30AM CST on February 5th and did not rise above freezing again until 8:40AM CST. It is estimated that low temperatures fell into the upper 20s and lower 30s across the area. This is estimated from observations in adjacent Kenedy and Cameron Counties, as well as Inland Willacy.

Frost/Freeze in NORTHERN HIDALGO COUNTY, TEXAS
From 04-FEB-22 23:30:00 to 05-FEB-22 08:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Temperatures fell below freezing around 11:30PM CST on February 4th and did not rise above freezing again until 8:30AM CST on February 5th. The COOP observer in San Manuel recorded a low of 24 degrees. Times are based on estimations from the Edinburg International Airport (KEBG), which is located just south of the zone divide in Hidalgo County.

Frost/Freeze in SOUTHERN HIDALGO COUNTY, TEXAS
From 04-FEB-22 23:55:00 to 05-FEB-22 08:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Temperatures fell below freezing around 11:55PM CST on February 4th and did not rise above freezing again until 8:30AM CST on February 5th. The Edinburg International Airport (KEBG) observed a low of 26 degrees. In other portions of Southern Hidalgo County, Miller International Airport (KMFE) recorded a low of 30 degrees at 5:53AM CST; Mid Valley Airport (KTXW) recorded a low of 29 degrees at 7:35AM CST on the 5th; a COOP observer in Weslaco recorded a low of 29 degrees.

Frost/Freeze in BROOKS, TEXAS
From 05-FEB-22 23:15:00 to 06-FEB-22 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Temperatures fell below freezing around 11:15PM CST on February 5th, and did not rise above freezing until 8:00AM CST on February 6th. The Brooks County Airport (KBKS) observed a low of 29 degrees.

Frost/Freeze in INLAND KENEDY COUNTY, TEXAS
From 06-FEB-22 04:00:00 to 06-FEB-22 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures fell below freezing around 4:00AM CST on February 6th, and did not rise above freezing until 8:00AM CST. The Union Pacific Railroad site 1.3 miles north of Sarita observed a low of 28 degrees. Another Union Pacific Railroad site 8.4 miles south of Border Patrol (UR074) recorded a low of 31 degrees.

Frost/Freeze in STARR, TEXAS
From 06-FEB-22 02:00:00 to 06-FEB-22 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures fell below freezing around 2:00AM CST on February 6th and did not rise above freezing again until 6:00AM CST. The Texas Mesonet site at Rancho Los Comitas (TWB26) recorded a low of 28 degrees. Another Mesonet site at Falcon Dam (FART2) in southwestern Starr County recorded a low of 29 degrees.

Frost/Freeze in ZAPATA, TEXAS
From 06-FEB-22 03:15:00 to 06-FEB-22 07:35:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Temperatures fell below freezing around 3:15AM CST on February 6th and did not rise above freezing again until 7:35AM CST. The Zapata County Airport (KAPY) recorded a low of 31 degrees.