Weather in Port Isabel, TX
Port Isabel, Thursday, 5 November, 09:50
Partly cloudy. Feels like 84°. High 84°, low 70°.
Monthly outlook for Port Isabel, TX: average high 75°, average low 68.6°. That is 0.7° below the climate normal for November. Precipitation is expected on 11 days (about 8.8 inches), against a normal of 5 days and 1.3 inches. The warmest day looks like 5 November (83.5°), the coolest 15 November (55.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 5 November – 14 November | 76.9° | 76.8° | +0.1° |
| 15 November – 24 November | 71.8° | 74.9° | -1.7° |
| 25 November – 4 December | at normal | 72.9° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Laguna Heights (2 mi).
0.52
Port Isabel, Friday, 6 November
Rain. High 79°, low 71°.
0.46Port Isabel, Saturday, 7 November
Rain. High 79°, low 74°.
1.56Port Isabel, Sunday, 8 November
Heavy rain. High 77°, low 72°.
2.75Port Isabel, Monday, 9 November
Heavy rain. High 76°, low 71°.
1.07Port Isabel, Tuesday, 10 November
Heavy rain. High 75°, low 67°.
0.04Port Isabel, Wednesday, 11 November
Light rain. High 77°, low 73°.
0.43Port Isabel, Thursday, 12 November
Rain. High 77°, low 73°.
0.55Port Isabel, Friday, 13 November
Rain. High 74°, low 71°.
1.13Port Isabel, Saturday, 14 November
Rain. High 73°, low 59°.
0.12Port Isabel, Sunday, 15 November
Light rain. High 63°, low 56°.
0.03Port Isabel, Monday, 16 November
Light rain. High 65°, low 60°.
0
Port Isabel, Tuesday, 17 November
Mostly clear. High 71°, low 62°.
0
Port Isabel, Wednesday, 18 November
Overcast. High 75°, low 71°.
0Port Isabel, Thursday, 19 November
Overcast. High 77°, low 74°.
0.02Port Isabel, Friday, 20 November
Light rain. High 80°, low 75°.
0.07Port Isabel, Saturday, 21 November
Climate normal for this date — 60-year average.
0.12Port Isabel, Sunday, 22 November
Climate normal for this date — 60-year average.
0.09Port Isabel, Monday, 23 November
Climate normal for this date — 60-year average.
0.12Port Isabel, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.09Port Isabel, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.08Port Isabel, Thursday, 26 November
Climate normal for this date — 60-year average.
0.07Port Isabel, Friday, 27 November
Climate normal for this date — 60-year average.
0.06Port Isabel, Saturday, 28 November
Climate normal for this date — 60-year average.
0.08Port Isabel, Sunday, 29 November
Climate normal for this date — 60-year average.
0.07
Port Isabel, Monday, 30 November
Climate normal for this date — 60-year average.
0.07Port Isabel, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.09Port Isabel, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.09Port Isabel, Thursday, 3 December
Climate normal for this date — 60-year average.
0.07Port Isabel, Friday, 4 December
Climate normal for this date — 60-year average.
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.
Sun and moon today
Weather history
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