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Portland, TX Weather Tomorrow

Follow tomorrow's Portland weather with an accurate 5 day outlook that includes precipitation potential, daytime and nighttime forecasts, temperature highs and lows in Fahrenheit and Celsius, sunrise and sunset times, cloud cover, wind chill, wind speed, and wind direction for the Portland area and around San Patricio county, Texas.
Updated: Mon Oct 12th 2026 7:15 AM CDT
Portland, TX Weather – 10-12 – Scattered Showers
89° / 81°
Scattered Showers
In Portland, passing showers are likely with a high near 89°F and a low around 81°F. Rainfall predicted to have a 57% chance with an estimated 0.06in. Wind will be moderate, blowing around 17mph on average and gusts of 19.7mph at 11 PM. The humidity will be on the higher side, averaging about 72%, the maximum being 81% at 8 AM and 61% being its lowest at 1 PM. Barometric pressure is its highest of 30inHg at 10 AM, a lowest point of 29.89inHg at 5 PM with an avg 29.94inHg.
Portland, TX Weather – 10-13 – Scattered Showers
90° / 82°

Weather Tomorrow

Scattered Showers
In Portland, scattered showers are likely with a high near 90°F and a low around 82°F. There might be light rainfall having a 21% chance with an estimated 0.01in. Wind will be moderate, blowing around 19mph on average and gusts of 23.3mph at 11 PM. The humidity will be on the higher side, averaging about 74%, the maximum being 84% at 8 AM and 60% being its lowest at 2 PM. Barometric pressure is its highest of 29.97inHg at 11 AM, a lowest point of 29.89inHg at 5 PM with an avg 29.92inHg.
Portland, TX Weather – 10-14 – Scattered Showers
88° / 82°
Scattered Showers
In Portland, on and off showers are set to occur with highs near 88°F and lows around 82°F. There's a moderate 48% chance of rainfall with an estimated 0.04in. Wind will be moderate, blowing around 20mph on average and gusts of 24.2mph at 2 AM. The humidity will be on the higher side, averaging about 72%, the maximum being 83% at 5 AM and 61% being its lowest at 11 PM. Barometric pressure is its highest of 29.95inHg at 12 PM, a lowest point of 29.88inHg at 5 PM with an avg 29.92inHg.
Portland, TX Weather – 10-15 – Sunny
87° / 79°
Sunny
Highs will reach 87°F with lows near 79°F in Portland, where sunshine is. There's a very small chance of rainfall, only about 5% with an estimated 0in. Wind will be moderate, blowing around 18mph on average and gusts of 25.3mph at 12 PM. Humidity levels should be comfortable, sitting around 56% on average, the maximum being 66% at 7 AM and 46% being its lowest at 4 PM. Barometric pressure is its highest of 29.98inHg at 11 PM, a lowest point of 29.9inHg at 5 PM with an avg 29.93inHg.
Portland, TX Weather – 10-16 – Sunny
90° / 74°
Sunny
It will be sunny in Portland, with a high of 90°F and a low of 74°F. Rainfall predicted to have a 57% chance with an estimated 0.05in. Wind will be moderate, blowing around 17mph on average and gusts of 28mph at 11 PM. Humidity levels should be comfortable, sitting around 57% on average, the maximum being 78% at 7 AM and 34% being its lowest at 3 PM. Barometric pressure is its highest of 30.16inHg at 11 PM, a lowest point of 29.98inHg at 5 AM with an avg 30.05inHg.
Portland, TX Weather – 10-17 – Sunny
81° / 66°
Sunny
Portland may see sunshine, with daytime highs of 81°F and overnight lows near 66°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 20mph on average and gusts of 32.9mph at 4 AM. Humidity levels should be comfortable, sitting around 38% on average, the maximum being 52% at 12 AM and 32% being its lowest at 4 PM. Barometric pressure is its highest of 30.27inHg at 10 AM, a lowest point of 30.16inHg at 12 AM with an avg 30.2inHg.

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