Frost Dates for Port Mansfield, TX

Elevation: 3 m

Frost Dates

Last Spring Frost (50%) January 12

First Fall Frost (50%) January 1

This location has a nearly year-round growing season with a brief frost risk period in winter.

30% Probability

Last Spring Frost January 29

First Fall Frost December 21

Hard Freeze (28°F)

Last Spring Hard Freeze January 7

First Fall Hard Freeze January 5

26.56°N, 97.43°W © OpenStreetMap

Growing Season

355 Days January 12 to January 1

USDA Hardiness Zone

Zone 9b

Avg. annual minimum: 25 to 30°F

Learn more

Köppen Climate

Cfa Humid Subtropical

Hot, humid summers and mild winters with rain year-round. Long growing seasons support a wide variety of vegetables, fruits, and ornamentals. The most common climate in the eastern US.

Köppen climate map

Temperature

50° 70° 90°

59°

Jan

63°

Feb

68°

Mar

74°

Apr

79°

May

83°

Jun

84°

Jul

85°

Aug

81°

Sep

76°

Oct

68°

Nov

61°

Dec

Avg High Avg Temp Avg Low

Temperature table

Average monthly temperatures (°F)
Month	Avg High	Avg Temp	Avg Low
January	68°	59°	50°
February	71°	63°	55°
March	76°	68°	61°
April	81°	74°	67°
May	85°	79°	73°
June	90°	83°	77°
July	91°	84°	78°
August	92°	85°	78°
September	89°	81°	74°
October	84°	76°	68°
November	76°	68°	60°
December	70°	61°	52°

Precipitation

0" 3" 6" 8.5"

2.8"

Jan

2.2"

Feb

3.3"

Mar

4.2"

Apr

7.1"

May

5.9"

Jun

2.9"

Jul

3.7"

Aug

8.5"

Sep

7.1"

Oct

4.8"

Nov

3.1"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	2.8
February	2.2
March	3.3
April	4.2
May	7.1
June	5.9
July	2.9
August	3.7
September	8.5
October	7.1
November	4.8
December	3.1

Sunrise / Sunset

Jan: 6:45 AM – 5:15 PM · 10h 30m

Feb: 6:27 AM – 5:33 PM · 11h 06m

Mar: 6:06 AM – 5:54 PM · 11h 49m

Apr: 5:41 AM – 6:19 PM · 12h 38m

May: 5:21 AM – 6:39 PM · 13h 18m

Jun: 5:10 AM – 6:50 PM · 13h 40m

Jul: 5:15 AM – 6:45 PM · 13h 31m

Aug: 5:32 AM – 6:28 PM · 12h 56m

Sep: 5:56 AM – 6:04 PM · 12h 09m

Oct: 6:19 AM – 5:41 PM · 11h 21m

Nov: 6:40 AM – 5:20 PM · 10h 40m

Dec: 6:50 AM – 5:10 PM · 10h 20m

Daylight Longest: 13h 40m · Shortest: 10h 20m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month	Sunrise	Sunset	Daylight
January	6:45 AM	5:15 PM	10h 30m
February	6:27 AM	5:33 PM	11h 06m
March	6:06 AM	5:54 PM	11h 49m
April	5:41 AM	6:19 PM	12h 38m
May	5:21 AM	6:39 PM	13h 18m
June	5:10 AM	6:50 PM	13h 40m
July	5:15 AM	6:45 PM	13h 31m
August	5:32 AM	6:28 PM	12h 56m
September	5:56 AM	6:04 PM	12h 09m
October	6:19 AM	5:41 PM	11h 21m
November	6:40 AM	5:20 PM	10h 40m
December	6:50 AM	5:10 PM	10h 20m

Nearby Stations

Raymondville, TX January 21 - December 26 Armstrong 4se, TX February 22 - December 5 Harlingen Rio Grande AP, TX January 8 - December 29 Port Isabel Cameron AP, TX January 8 - January 4 Harlingen, TX January 9 - January 3 Port Isabel, TX January 3 - January 1

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