As of 12:49 CST

Weather in Port Isabel, TX

89°Current weather

Port Isabel, Monday, 2 November, 12:49

Partly cloudy. Feels like 100°. High 89°, low 73°.

Pressure29.88 inHg
Wind11.5 mph S
Humidity66%
Visibility6.2 mi
Dew point76°

Monthly outlook for Port Isabel, TX: average high 78.8°, average low 71.2°. That is 1.2° above the climate normal for November. Precipitation is expected on 5 days (about 1.9 inches), against a normal of 5 days and 1.3 inches. The warmest day looks like 2 November (89°), the coolest 17 November (63.6°).

78.8°/71.2°
Average high / low
+1.2°
Above normal
5 / 5
Wet days / normal
1.9 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
2 November – 11 November80.7°77.5°+1.8°
12 November – 21 November75.7°75.2°+0.3°
22 November – 1 Decemberat normal73.4°—

November records over 66 years

91°8 November 2025All-time high
37.2°12 November 2019All-time low

Climate normals and records are computed from the nearest reference point — Laguna Heights (2 mi).

Tue, 0385° / 78°0.01Light rain
85 °Light rain

Port Isabel, Tuesday, 3 November

Light rain. High 85°, low 78°.

Pressure29.88 inHg
Wind9.8 mph SE
Humidity66%
Visibility6.2 mi
Dew point72°
Wed, 0480° / 75°0.1Rain
80 °Rain

Port Isabel, Wednesday, 4 November

Rain. High 80°, low 75°.

Pressure29.97 inHg
Wind12.7 mph NE
Humidity67%
Visibility6.2 mi
Dew point68°
Thu, 0583° / 78°0.02Light rain
83 °Light rain

Port Isabel, Thursday, 5 November

Light rain. High 83°, low 78°.

Pressure29.85 inHg
Wind12.8 mph SE
Humidity71%
Visibility6.2 mi
Dew point73°
Fri, 0679° / 74°0.27Rain
79 °Rain

Port Isabel, Friday, 6 November

Rain. High 79°, low 74°.

Pressure29.94 inHg
Wind8.9 mph N
Humidity77%
Visibility6.2 mi
Dew point70°
Sat, 0775° / 64°0.86Heavy rain
75 °Heavy rain

Port Isabel, Saturday, 7 November

Heavy rain. High 75°, low 64°.

Pressure29.97 inHg
Wind18.6 mph N
Humidity83%
Visibility—
Dew point64°
Sun, 0878° / 67°0Overcast
78 °Overcast

Port Isabel, Sunday, 8 November

Overcast. High 78°, low 67°.

Pressure30.06 inHg
Wind16.9 mph N
Humidity57%
Visibility—
Dew point61°
Mon, 0979° / 73°0Clear
79 °Clear

Port Isabel, Monday, 9 November

Clear. High 79°, low 73°.

Pressure30.18 inHg
Wind12.6 mph E
Humidity46%
Visibility—
Dew point56°
Tue, 1079° / 71°0Overcast
79 °Overcast

Port Isabel, Tuesday, 10 November

Overcast. High 79°, low 71°.

Pressure30.18 inHg
Wind17 mph SE
Humidity51%
Visibility—
Dew point58°
Wed, 1181° / 73°0Partly cloudy
81 °Partly cloudy

Port Isabel, Wednesday, 11 November

Partly cloudy. High 81°, low 73°.

Pressure30.06 inHg
Wind20.2 mph S
Humidity55%
Visibility—
Dew point62°
Thu, 1282° / 74°0Overcast
82 °Overcast

Port Isabel, Thursday, 12 November

Overcast. High 82°, low 74°.

Pressure30.03 inHg
Wind14.1 mph S
Humidity56%
Visibility—
Dew point63°
Fri, 1381° / 75°0.05Light rain
81 °Light rain

Port Isabel, Friday, 13 November

Light rain. High 81°, low 75°.

Pressure29.91 inHg
Wind17.5 mph SE
Humidity57%
Visibility—
Dew point64°
Sat, 1476° / 70°0.58Rain
76 °Rain

Port Isabel, Saturday, 14 November

Rain. High 76°, low 70°.

Pressure29.88 inHg
Wind15.7 mph NW
Humidity65%
Visibility—
Dew point62°
Sun, 1572° / 68°0Partly cloudy
72 °Partly cloudy

Port Isabel, Sunday, 15 November

Partly cloudy. High 72°, low 68°.

Pressure30.00 inHg
Wind17.4 mph N
Humidity52%
Visibility—
Dew point53°
Mon, 1669° / 64°0Clear
69 °Clear

Port Isabel, Monday, 16 November

Clear. High 69°, low 64°.

Pressure30.12 inHg
Wind16.6 mph N
Humidity43%
Visibility—
Dew point45°
Tue, 1774° / 64°0Clear
74 °Clear

Port Isabel, Tuesday, 17 November

Clear. High 74°, low 64°.

Pressure30.09 inHg
Wind16.6 mph SE
Humidity53%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 1876° / 67°0.06Climate normal
76 °Climate normal

Port Isabel, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high76°
Average low67°
Average precipitation0.06 in
Chance of precipitation27%
Record high90° (2024)
Record low49° (1980)
Thu, 1975° / 67°0.08Climate normal
75 °Climate normal

Port Isabel, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high75°
Average low67°
Average precipitation0.08 in
Chance of precipitation27%
Record high87° (2025)
Record low51° (2000)
Fri, 2074° / 65°0.11Climate normal
74 °Climate normal

Port Isabel, Friday, 20 November

Climate normal for this date — 60-year average.

Average high74°
Average low65°
Average precipitation0.11 in
Chance of precipitation35%
Record high83° (2025)
Record low48° (2022)
Sat, 2175° / 65°0.07Climate normal
75 °Climate normal

Port Isabel, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high75°
Average low65°
Average precipitation0.07 in
Chance of precipitation23%
Record high85° (2025)
Record low48° (2022)
Sun, 2275° / 66°0.12Climate normal
75 °Climate normal

Port Isabel, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high75°
Average low66°
Average precipitation0.12 in
Chance of precipitation27%
Record high85° (2019)
Record low49° (2022)
Mon, 2375° / 65°0.09Climate normal
75 °Climate normal

Port Isabel, Monday, 23 November

Climate normal for this date — 60-year average.

Average high75°
Average low65°
Average precipitation0.09 in
Chance of precipitation28%
Record high86° (2025)
Record low49° (1979)
Tue, 2474° / 64°0.12Climate normal
74 °Climate normal

Port Isabel, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high74°
Average low64°
Average precipitation0.12 in
Chance of precipitation23%
Record high87° (2025)
Record low48° (1970)
Wed, 2574° / 65°0.09Climate normal
74 °Climate normal

Port Isabel, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high74°
Average low65°
Average precipitation0.09 in
Chance of precipitation25%
Record high88° (2025)
Record low48° (1996)
Thu, 2674° / 65°0.08Climate normal
74 °Climate normal

Port Isabel, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high74°
Average low65°
Average precipitation0.08 in
Chance of precipitation30%
Record high85° (2020)
Record low46° (1993)
Fri, 2774° / 64°0.07Climate normal
74 °Climate normal

Port Isabel, Friday, 27 November

Climate normal for this date — 60-year average.

Average high74°
Average low64°
Average precipitation0.07 in
Chance of precipitation28%
Record high86° (2024)
Record low46° (1980)
Sat, 2873° / 62°0.06Climate normal
73 °Climate normal

Port Isabel, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high73°
Average low62°
Average precipitation0.06 in
Chance of precipitation32%
Record high82° (2020)
Record low42° (1976)
Sun, 2972° / 63°0.08Climate normal
72 °Climate normal

Port Isabel, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high72°
Average low63°
Average precipitation0.08 in
Chance of precipitation30%
Record high84° (2025)
Record low41° (2001)
Mon, 3072° / 63°0.07Climate normal
72 °Climate normal

Port Isabel, Monday, 30 November

Climate normal for this date — 60-year average.

Average high72°
Average low63°
Average precipitation0.07 in
Chance of precipitation35%
Record high83° (2019)
Record low46° (1976)
Tue, 0172° / 63°0.07Climate normal
72 °Climate normal

Port Isabel, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high72°
Average low63°
Average precipitation0.07 in
Chance of precipitation18%
Record high79° (2023)
Record low41° (2020)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Port Isabel, TX are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Port Isabel, TX since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.