Rio Grande City, TX Weather Tomorrow

The extended forecast for Rio Grande City begins with tomorrow's weather and continues through the next 5 days with daily precipitation forecasts, changing sky conditions, daytime highs, overnight lows, Fahrenheit and Celsius temperatures, sunrise, sunset, wind chill, and local wind details for the Rio Grande City area and around Starr county, Texas.
Updated: Mon Oct 5th 2026 7:30 AM CDT
Rio Grande City, TX Weather – 10-5 – Scattered Showers
80° / 74°
Scattered Showers
Daytime highs will reach 80°F with lows dropping to 74°F in Rio Grande City, where showers likely at times. The chance of rain is 79% with an estimated 0.13in. Wind will be moderate, blowing around 15mph on average and gusts of 21.3mph at 8 AM. High humidity with average of 82% is anticipated, the maximum being 88% at 8 AM and 71% being its lowest at 4 PM. Barometric pressure is its highest of 30.05inHg at 10 AM, a lowest point of 29.95inHg at 4 PM with an avg 29.99inHg.
Rio Grande City, TX Weather – 10-6 – Overcast
88° / 75°

Weather Tomorrow

Overcast
Rio Grande City could see cloud-filled skies with daytime highs of 88°F and nighttime lows near 75°F. There's a moderate 29% chance of rainfall with an estimated 0.01in. Wind will be moderate, blowing around 13mph on average and gusts of 19.5mph at 7 AM. The humidity will be on the higher side, averaging about 68%, the maximum being 80% at 4 AM and 50% being its lowest at 3 PM. Barometric pressure is its highest of 29.98inHg at 12 AM, a lowest point of 29.83inHg at 5 PM with an avg 29.91inHg.
Rio Grande City, TX Weather – 10-7 – Scattered Showers
89° / 75°
Scattered Showers
Passing showers are in the forecast for Rio Grande City, with a high of 89°F and a low of 75°F. There's a moderate 45% chance of rainfall with an estimated 0.03in. Wind will be moderate, blowing around 14mph on average and gusts of 20.2mph at 8 PM. The humidity will be on the higher side, averaging about 72%, the maximum being 87% at 7 AM and 52% being its lowest at 2 PM. Barometric pressure is its highest of 29.9inHg at 11 AM, a lowest point of 29.79inHg at 5 PM with an avg 29.85inHg.
Rio Grande City, TX Weather – 10-8 – Scattered Showers
86° / 75°
Scattered Showers
In Rio Grande City, passing showers are likely with a high near 86°F and a low around 75°F. The chance of rain is 81% with an estimated 0.89in. Wind will be moderate, blowing around 16mph on average and gusts of 24.8mph at 9 PM. The humidity will be on the higher side, averaging about 76%, the maximum being 88% at 7 AM and 60% being its lowest at 1 PM. Barometric pressure is its highest of 29.89inHg at 11 AM, a lowest point of 29.81inHg at 5 PM with an avg 29.85inHg.
Rio Grande City, TX Weather – 10-9 – Light Rain Shower
85° / 75°
Light Rain Shower
Rio Grande City may see rain, with daytime highs of 85°F and overnight lows near 75°F. The chance of rain is 79% with an estimated 0.96in. Wind will be moderate, blowing around 13mph on average and gusts of 20.8mph at 10 PM. The humidity will be on the higher side, averaging about 75%, the maximum being 87% at 8 AM and 60% being its lowest at 1 PM. Barometric pressure is its highest of 29.91inHg at 10 AM, a lowest point of 29.8inHg at 5 PM with an avg 29.86inHg.
Rio Grande City, TX Weather – 10-10 – Sunny
88° / 71°
Sunny
Rio Grande City may see sunshine, with daytime highs of 88°F and overnight lows near 71°F. There might be light rainfall having a 17% chance with an estimated 0in. Wind will be moderate, blowing around 12mph on average and gusts of 18.8mph at 7 AM. The humidity will be on the higher side, averaging about 67%, the maximum being 87% at 4 AM and 46% being its lowest at 4 PM. Barometric pressure is its highest of 29.9inHg at 10 AM, a lowest point of 29.76inHg at 5 PM with an avg 29.83inHg.

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