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Alamo, TX Weather
Current conditions
Observed at McAllen, Miller International Airport · 45 min ago
Forecast
10-day-
Today
Sunny, with a high near 90. North northeast wind 5 to 9 mph.
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Tonight
Clear, with a low around 68. North northeast wind 3 to 9 mph.
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Wednesday
A chance of rain showers after 4pm. Sunny. High near 89, with temperatures falling to around 85 in the afternoon. North wind 5 to 8 mph. Chance of precipitation is 30%.
National Weather Service forecast updated 2 hrs ago.
Hourly
Hourly forecast- Now83°
- 1 PM85°
- 2 PM87°
- 3 PM88°
- 4 PM88°
- 5 PM88°
- 6 PM85°
- 7 PM83°
- 8 PM81°
- 9 PM77°
- 10 PM76°
- 11 PM75°
- Wed12 AM74°
- 1 AM73°
- 2 AM72°
- 3 AM71°
- 4 AM70°
- 5 AM70°
- 6 AM69°
- 7 AM69°
- 8 AM69°
- 9 AM71°
- 10 AM76°
- 11 AM79°
Daily forecast
Details- TodayOct 20Sunny68°90°
- WedOct 21Sunny then Chance Rain Showers29%72°89°
- ThuOct 22Slight Chance Rain Showers16%66°88°
- FriOct 23Sunny68°89°
- SatOct 24Sunny70°90°
- SunOct 25Partly Sunny10%70°89°
- MonOct 26Chance Rain Showers38%69°87°
- TueOct 27Rain0.21 in70°82°
- WedOct 28Cloudy68°80°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Alamo
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Air quality
Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.
Forecast
- TueGood
- WedGood
- ThuGood
Brownsville-McAllen, TX reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Nearby
Forecasters' discussion
From the National Weather Service office in BRO, issued 5 hrs ago
Key Messages
Updated at 634 AM CDT Tue Oct 20 2026
- Overall seasonable temperatures and pleasant weather expected.
- Narrow beaches around high tide are expected through Wednesday.
- Showers and thunderstorms are possible Wednesday east of US-281.
Discussion
Issued at 1045 PM CDT Mon Oct 19 2026
Ridging over NE Mexico will slowly shift east towards the Gulf, keeping mostly fair weather for much of the period. High temperatures climb to the upper 80s-low 90s by Wednesday, with a Minor (level 1 of 4) risk of heat related illness into the weekend.
Mostly dry conditions should prevail through this afternoon. A plume of moisture associated with a developing coastal trough will bring deeper moisture westward beginning tonight. Rain chances increase along the coast overnight, spreading westward through Wednesday. Chances for showers and thunderstorms peak Wednesday afternoon, with moderate PoPs (40-60%) east of US-281, highest near the coast. Drier conditions are expected Thursday through Sunday as high pressure dominates. Low rain chances return early next week.
Long-period swell and northeast winds will keep local beaches narrow. Minor coastal flooding is possible near high through the middle of the week. Current guidance keeps water levels below minor flooding threshold, but conditions will continue to be monitored.
Aviation
(12Z TAFS) Issued at 634 AM CDT Tue Oct 20 2026
VFR conditions are forecast to continue through the period. Generally light to moderate northeasterly winds are forecast through the afternoon, with winds becoming light and variable this evening.
Marine
Issued at 1045 PM CDT Mon Oct 19 2026
Adverse conditions are expected through midweek due to moderate seas and northeast to onshore winds, resulting in intermittent SCEC conditions across the Laguna Madre and Gulf waters. Rain chances increase Tuesday night into Wednesday as a coastal trough brings additional moisture to the reaching, with PoPs reaching 70-80% over the Gulf waters Wednesday. Thursday and Friday, conditions improve as seas decrease to slight and winds decrease to a gentle breeze.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.