Current Conditions

Mercedes, Texas

85°F30°C

Showers

Feels like96°F36°C

Wind

ESE 10 mph16 km/h

Humidity

76%

Cloud Cover

14%

As of Monday, September 21, 2026 at 9:25 PM CDT

Today's Outlook

Night

Mostly clear, with a low around 81°F27°C. Breezy from the ESE at 8 to 14 mph13 to 22 km/h. 48% chance of drizzle in the evening.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Showers	High 94°F35°CFeels 105°F41°C	Low 80°F27°C	Precip 0.05 in1.3 mm60%	Cloud 27%	Wind E 8 mph13 km/h	Tuesday: Partly cloudy and hot, with a high of 94°F35°C and morning low of 80°F27°C — feels like 106°F41°C. Breezy from the E at 8 to 13 mph13 to 21 km/h. 60% chance of showers throughout the day. Heat risk in the afternoon. Tuesday Night: Mostly clear, with a low around 81°F27°C. Breezy from the ESE at 8 to 14 mph13 to 22 km/h. 48% chance of drizzle in the evening.
Drizzle	High 93°F34°CFeels 105°F41°C	Low 79°F26°C	Precip 0.07 in1.7 mm58%	Cloud 51%	Wind E 8 mph12 km/h	Wednesday: Mostly cloudy and hot, with a high of 93°F34°C and morning low of 79°F26°C — feels like 106°F41°C. Breezy from the E at 7 to 13 mph12 to 21 km/h. 58% chance of drizzle throughout the day. Heat risk in the afternoon. Wednesday Night: Partly cloudy, with a low around 80°F27°C. Breezy from the ESE at 8 to 13 mph12 to 21 km/h. 43% chance of drizzle in the evening.
Drizzle	High 93°F34°CFeels 104°F40°C	Low 79°F26°C	Precip 0.06 in1.4 mm60%	Cloud 60%	Wind E 8 mph12 km/h	Thursday: Mostly cloudy and hot, with a high of 93°F34°C and morning low of 79°F26°C — feels like 104°F40°C. Breezy from the E at 8 to 13 mph12 to 21 km/h. 60% chance of drizzle throughout the day. Heat risk in the afternoon. Thursday Night: Mostly cloudy, with a low around 80°F27°C. Breezy from the E at 7 to 12 mph12 to 20 km/h. 29% chance of drizzle in the evening.
Drizzle	High 94°F34°CFeels 105°F40°C	Low 79°F26°C	Precip 0.05 in1.2 mm44%	Cloud 47%	Wind E 7 mph11 km/h	Friday: Partly cloudy and hot, with a high of 94°F34°C and morning low of 79°F26°C — feels like 104°F40°C. Breezy from the E at 7 to 11 mph11 to 18 km/h. 44% chance of drizzle throughout the day. Heat risk in the afternoon. Friday Night: Partly cloudy, with a low around 80°F27°C. Breezy from the E at 7 to 12 mph11 to 19 km/h. 26% chance of drizzle before dawn.
Drizzle	High 95°F35°CFeels 104°F40°C	Low 78°F26°C	Precip 0.03 in0.8 mm19%	Cloud 36%	Wind ESE 7 mph11 km/h	Saturday: Partly cloudy and hot, with a high of 95°F35°C and morning low of 78°F26°C — feels like 104°F40°C. Breezy from the ESE at 6 to 10 mph10 to 15 km/h. 19% chance of drizzle around midday. Heat risk in the afternoon. Saturday Night: Partly cloudy, with a low around 79°F26°C. Breezy from the ESE at 7 to 12 mph12 to 19 km/h. 14% chance of drizzle overnight.
Drizzle	High 96°F35°CFeels 105°F41°C	Low 79°F26°C	Precip 0.03 in0.8 mm27%	Cloud 49%	Wind SE 7 mph12 km/h	Sunday: Mostly cloudy and hot, with a high of 96°F35°C and morning low of 79°F26°C — feels like 106°F41°C. Breezy from the SE at 6 to 10 mph10 to 15 km/h. 27% chance of drizzle around midday. Heat risk in the afternoon. Sunday Night: Partly cloudy, with a low around 80°F27°C. Breezy from the SE at 8 to 12 mph13 to 19 km/h. 21% chance of drizzle in the evening.
Showers	High 94°F35°CFeels 103°F40°C	Low 79°F26°C	Precip 0.06 in1.5 mm45%	Cloud 46%	Wind SE 9 mph14 km/h	Monday: Partly cloudy and hot, with a high of 94°F35°C and morning low of 79°F26°C — feels like 104°F40°C. Breezy from the SE at 8 to 12 mph13 to 19 km/h. 45% chance of showers throughout the day. Heat risk in the afternoon. Monday Night: Partly cloudy, with a low around 81°F27°C. Breezy from the SE at 9 to 13 mph15 to 21 km/h. 22% chance of drizzle before dawn.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	TuesdaySep 22	94°F35°C Feels 105°F41°C	80°F27°C	0.05 in1.3 mm· 60%	27%	Showers	E 8 mph13 km/h
DayPartly cloudy and hot, with a high of 94°F35°C and morning low of 80°F27°C — feels like 106°F41°C. Breezy from the E at 8 to 13 mph13 to 21 km/h. 60% chance of showers throughout the day. Heat risk in the afternoon. NightMostly clear, with a low around 81°F27°C. Breezy from the ESE at 8 to 14 mph13 to 22 km/h. 48% chance of drizzle in the evening.
	WednesdaySep 23	93°F34°C Feels 105°F41°C	79°F26°C	0.07 in1.7 mm· 58%	51%	Drizzle	E 8 mph12 km/h
DayMostly cloudy and hot, with a high of 93°F34°C and morning low of 79°F26°C — feels like 106°F41°C. Breezy from the E at 7 to 13 mph12 to 21 km/h. 58% chance of drizzle throughout the day. Heat risk in the afternoon. NightPartly cloudy, with a low around 80°F27°C. Breezy from the ESE at 8 to 13 mph12 to 21 km/h. 43% chance of drizzle in the evening.
	ThursdaySep 24	93°F34°C Feels 104°F40°C	79°F26°C	0.06 in1.4 mm· 60%	60%	Drizzle	E 8 mph12 km/h
DayMostly cloudy and hot, with a high of 93°F34°C and morning low of 79°F26°C — feels like 104°F40°C. Breezy from the E at 8 to 13 mph12 to 21 km/h. 60% chance of drizzle throughout the day. Heat risk in the afternoon. NightMostly cloudy, with a low around 80°F27°C. Breezy from the E at 7 to 12 mph12 to 20 km/h. 29% chance of drizzle in the evening.
	FridaySep 25	94°F34°C Feels 105°F40°C	79°F26°C	0.05 in1.2 mm· 44%	47%	Drizzle	E 7 mph11 km/h
DayPartly cloudy and hot, with a high of 94°F34°C and morning low of 79°F26°C — feels like 104°F40°C. Breezy from the E at 7 to 11 mph11 to 18 km/h. 44% chance of drizzle throughout the day. Heat risk in the afternoon. NightPartly cloudy, with a low around 80°F27°C. Breezy from the E at 7 to 12 mph11 to 19 km/h. 26% chance of drizzle before dawn.
	SaturdaySep 26	95°F35°C Feels 104°F40°C	78°F26°C	0.03 in0.8 mm· 19%	36%	Drizzle	ESE 7 mph11 km/h
DayPartly cloudy and hot, with a high of 95°F35°C and morning low of 78°F26°C — feels like 104°F40°C. Breezy from the ESE at 6 to 10 mph10 to 15 km/h. 19% chance of drizzle around midday. Heat risk in the afternoon. NightPartly cloudy, with a low around 79°F26°C. Breezy from the ESE at 7 to 12 mph12 to 19 km/h. 14% chance of drizzle overnight.
	SundaySep 27	96°F35°C Feels 105°F41°C	79°F26°C	0.03 in0.8 mm· 27%	49%	Drizzle	SE 7 mph12 km/h
DayMostly cloudy and hot, with a high of 96°F35°C and morning low of 79°F26°C — feels like 106°F41°C. Breezy from the SE at 6 to 10 mph10 to 15 km/h. 27% chance of drizzle around midday. Heat risk in the afternoon. NightPartly cloudy, with a low around 80°F27°C. Breezy from the SE at 8 to 12 mph13 to 19 km/h. 21% chance of drizzle in the evening.
	MondaySep 28	94°F35°C Feels 103°F40°C	79°F26°C	0.06 in1.5 mm· 45%	46%	Showers	SE 9 mph14 km/h
DayPartly cloudy and hot, with a high of 94°F35°C and morning low of 79°F26°C — feels like 104°F40°C. Breezy from the SE at 8 to 12 mph13 to 19 km/h. 45% chance of showers throughout the day. Heat risk in the afternoon. NightPartly cloudy, with a low around 81°F27°C. Breezy from the SE at 9 to 13 mph15 to 21 km/h. 22% chance of drizzle before dawn.
	TuesdaySep 29	95°F35°C Feels 105°F41°C	80°F26°C	0.04 in1 mm· 37%	45%	Drizzle	SE 10 mph16 km/h
DayPartly cloudy and hot, with a high of 95°F35°C and morning low of 80°F26°C — feels like 106°F41°C. Breezy from the SE at 10 to 13 mph17 to 21 km/h. 37% chance of drizzle around midday. Heat risk in the afternoon. NightPartly cloudy, with a low around 81°F27°C. Breezy from the SE at 10 to 13 mph16 to 21 km/h. 20% chance of drizzle in the evening.
	WednesdaySep 30	93°F34°C Feels 101°F39°C	79°F26°C	0.19 in4.9 mm· 44%	61%	Showers	SE 10 mph15 km/h
DayMostly cloudy and hot, with a high of 93°F34°C and morning low of 79°F26°C — feels like 102°F39°C. Breezy from the SE at 10 to 12 mph16 to 19 km/h. 44% chance of showers throughout the day. Heat risk in the afternoon. NightMostly cloudy, with a low around 81°F27°C. Breezy from the SE at 9 to 11 mph15 to 18 km/h. 31% chance of showers throughout the night.
	ThursdayOct 1	91°F33°C Feels 96°F35°C	77°F25°C	0.22 in5.5 mm· 35%	59%	Showers	E 9 mph14 km/h
DayMostly cloudy and hot, with a high of 91°F33°C and morning low of 77°F25°C. Breezy from the ENE at 10 to 12 mph16 to 19 km/h. 35% chance of showers throughout the day. Heat risk in the afternoon. NightMostly cloudy, with a low around 78°F26°C. Breezy from the ESE at 8 to 10 mph13 to 17 km/h. 26% chance of showers throughout the night.
	FridayOct 2	90°F32°C Feels 94°F35°C	75°F24°C	0.13 in3.4 mm· 36%	50%	Showers	E 8 mph14 km/h
DayMostly cloudy and hot, with a high of 90°F32°C and morning low of 75°F24°C. Breezy from the E at 9 to 11 mph14 to 18 km/h. 36% chance of showers throughout the day. Heavy, humid air. NightPartly cloudy, with a low around 77°F25°C. Breezy from the ESE at 8 to 10 mph13 to 17 km/h. 26% chance of drizzle throughout the night.
	SaturdayOct 3	91°F33°C Feels 96°F35°C	75°F24°C	0.11 in2.9 mm· 32%	50%	Showers	ESE 9 mph14 km/h
DayMostly cloudy and hot, with a high of 91°F33°C and morning low of 75°F24°C. Breezy from the ESE at 9 to 11 mph14 to 18 km/h. 32% chance of showers throughout the day. Heat risk in the afternoon. NightPartly cloudy, with a low around 77°F25°C. Breezy from the ESE at 8 to 10 mph13 to 17 km/h. 22% chance of drizzle throughout the night.
	SundayOct 4	89°F32°C Feels 94°F34°C	75°F24°C	0.17 in4.4 mm· 35%	55%	Showers	E 9 mph14 km/h
DayMostly cloudy and hot, with a high of 89°F32°C and morning low of 75°F24°C. Breezy from the E at 9 to 11 mph15 to 18 km/h. 35% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 77°F25°C. Breezy from the ESE at 8 to 10 mph13 to 17 km/h. 29% chance of showers throughout the night.
	MondayOct 5	89°F32°C Feels 94°F34°C	75°F24°C	0.14 in3.6 mm· 40%	54%	Showers	E 8 mph13 km/h
DayMostly cloudy and hot, with a high of 89°F32°C and morning low of 75°F24°C. Breezy from the ENE at 9 to 11 mph14 to 18 km/h. 40% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 76°F24°C. Breezy from the E at 8 to 10 mph13 to 16 km/h. 32% chance of showers throughout the night.
	TuesdayOct 6	89°F32°C Feels 94°F34°C	75°F24°C	0.11 in2.7 mm· 34%	50%	Showers	E 8 mph13 km/h
DayMostly cloudy and hot, with a high of 89°F32°C and morning low of 75°F24°C. Breezy from the ENE at 9 to 11 mph14 to 17 km/h. 34% chance of showers throughout the day. Heavy, humid air. NightPartly cloudy, with a low around 76°F24°C. Breezy from the E at 8 to 10 mph12 to 16 km/h. 24% chance of showers throughout the night.

Nearby Cities

Weslaco5 mi8 km Donna9 mi14 km Alamo13 mi21 km Harlingen14 mi22 km San Juan15 mi25 km Pharr17 mi27 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 26.1498°N, 97.9136°W·Elevation: 21m·Timezone: America/Chicago·Population: 16,657